Measurabl Connect
3,800+ Utility Providers. 40 Countries.
Measurabl can automate meter reading data collection from the following utility providers across energy and water. By directly connecting to these providers, we enable automated data collection that improves accuracy, reduces manual effort, and helps you scale sustainability reporting with confidence.
| Utility Provider | Service Type | Country | Region |
|---|---|---|---|
| ânergie NB Power | Water, Other Service Type, Lighting, Electric | Canada | North America |
| ânergir | Natural Gas | Canada | North America |
| 4-County Electric Power Association | Lighting, Electric | United States | North America |
| A&N Electric Cooperative (ANEC) | Lighting, Electric | United States | North America |
| A2A Energia | Electric, Natural Gas | Italy | Europe |
| AAA Disposal Service | Sanitation | United States | North America |
| Abbanoa S.p.A | Water, Sewer | Italy | Europe |
| ABC Disposal | Sanitation | United States | North America |
| Abu Dhabi Distribution Co. | Water, Sanitation, Electric | United Arab Emirates | Asia |
| Access Energy Cooperative | Electric | United States | North America |
| Access Gas Services | Natural Gas | Canada | North America |
| Acciona Energia | Electric | Spain | Europe |
| Acea Acqua | Water, Sewer | Italy | Europe |
| Acquedotto Pugliese | Water, Sewer | Italy | Europe |
| ACS Billing Service | Water, Sewer, Sanitation | United States | North America |
| ActewAGL | Electric, Natural Gas | Australia | Oceania |
| Active Business Services | Electric, Natural Gas | Canada | North America |
| Acton Water District | Water | United States | North America |
| Adams County Water Association | Water, Sewer | United States | North America |
| Adams Electric Cooperative | Lighting, Electric | United States | North America |
| Adams Rural Electric Cooperative | Electric | United States | North America |
| Adams-Columbia Electric Cooperative | Electric | United States | North America |
| Adani Electricity Mumbai Limited (AEML) | Electric | India | Asia |
| Administrations Service Fyn | Electric | Denmark | Europe |
| AEP Appalachian Power | Lighting, Electric | United States | North America |
| AEP Energy Incorporated | Lighting, Electric, Natural Gas | United States | North America |
| AEP Indiana Michigan Power | Lighting, Electric | United States | North America |
| AEP Kentucky Power | Lighting, Electric | United States | North America |
| AEP Ohio | Telecom, Television, Lighting, Electric | United States | North America |
| AEP Public Service Company of Oklahoma | Lighting, Electric | United States | North America |
| AEP Southwestern Electric Power Company | Lighting, Electric | United States | North America |
| AES Indiana | Other Service Type, Lighting, Electric | United States | North America |
| AES Ohio | Lighting, Electric | United States | North America |
| AGL | Lighting, Electric, Natural Gas | Australia | Oceania |
| Aguas Antofagasta S.A. | Water, Sewer | Chile | South America |
| Aguas de Saltillo | Water, Sewer | Mexico | North America |
| Aguas Del Altiplano | Water, Sewer | Chile | South America |
| Aigües de Barcelona | Water, Sewer | Spain | Europe |
| Aigues D'Elx | Water, Sewer, Sanitation | Spain | Europe |
| Aiken Electric Cooperative | Lighting, Electric | United States | North America |
| Air Selangor | Water | Malaysia | Asia |
| Airgas | Propane, Natural Gas | United States | North America |
| Alabama Power | Lighting, Electric | United States | North America |
| Alabama Wastewater | Water, Sewer | United States | North America |
| Alabaster Water | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Alameda County Industries (ACI) | Sanitation | United States | North America |
| Alameda County Water District | Water | United States | North America |
| Alameda Municipal Power | Landline Phone, Electric | United States | North America |
| Alaska Electric Light & Power Company (AEL&P) | Lighting, Electric | United States | North America |
| Albany Water Gas and Light Commission | Water, Sewer, Sanitation, Lighting, Electric, Internet, Natural Gas | United States | North America |
| Albemarle County Service Authority | Water, Irrigation, Sewer | United States | North America |
| Albemarle Electric Membership Corporation | Electric | United States | North America |
| Albuquerque Bernalilo County Water Utility Authority | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Alderwood Water & Waste Water District | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Alectra Utilities | Water, Sewer, Electric | Canada | North America |
| Aleppo Township Authority | Water, Sewer | United States | North America |
| Alexandria Renew Entreprises | Water, Sewer | United States | North America |
| Alger Delta Electric | Electric | United States | North America |
| Algoma Power Inc. | Electric | Canada | North America |
| Algoma Utilities | Water, Sewer, Electric | United States | North America |
| All American Waste | Sanitation | United States | North America |
| Alliant Energy | Other Service Type, Lighting, Electric, Natural Gas | United States | North America |
| Allo Communications | Landline Phone, Television, Internet | United States | North America |
| ALP Utilities | Water, Sewer, Electric | United States | North America |
| Alpena Power | Lighting, Electric | United States | North America |
| Alperia Smart Services Srl | Electric, Natural Gas | Italy | Europe |
| Alpha-Talbott Utility District | Water, Sewer | United States | North America |
| Alpiq | Electric | Switzerland | Europe |
| AltaGas Utilities | Electric, Natural Gas | Canada | North America |
| Alterna | Electric | France | Europe |
| Altoona Water Authority | Water, Sewer | United States | North America |
| Amador Water Agency | Water, Sewer | United States | North America |
| Ambit Energy | Lighting, Electric, Natural Gas | United States | North America |
| Ameren Illinois | Lighting, Electric, Natural Gas | United States | North America |
| Ameren Missouri | Lighting, Electric, Natural Gas | United States | North America |
| American Disposal Services | Sanitation | United States | North America |
| American Electric Power (AEP) | Lighting, Electric, Natural Gas | United States | North America |
| American Power and Light LLC | Lighting, Electric | United States | North America |
| American Waste Control | Sanitation | United States | North America |
| American Water | Water, Irrigation, Sewer | United States | North America |
| American Water and Energy Savers | Water, Sewer, Sanitation | United States | North America |
| AmeriGas | Electric, Propane, Natural Gas | United States | North America |
| AmeriPower | Electric | United States | North America |
| Amicalola Electric Membership Corporation | Lighting, Electric | United States | North America |
| Ampra Energy | Electric | United States | North America |
| Anaheim Public Utilities | Water, Irrigation, Sewer, Sanitation, Lighting, Electric | United States | North America |
| Andel Energi | Natural Gas | Denmark | Europe |
| Anglian Water | Water, Sewer | United Kingdom | Europe |
| Ankeny Sanitation Inc | Sanitation | United States | North America |
| Anne Arundel County | Water, Irrigation, Sewer | United States | North America |
| Anniston Water Works & Sewer Board | Water, Sewer | United States | North America |
| Anoka Municipal Utility | Water, Irrigation, Sewer, Lighting, Electric | United States | North America |
| Anza Electric Cooperative Inc | Electric, Internet | United States | North America |
| AP Gas and Electric (APG&E) | Lighting, Electric, Natural Gas | United States | North America |
| Apa Nova Bucuresti S.A. | Water, Sewer | Romania | Europe |
| Apex Utilities Inc. | Electric, Natural Gas | Canada | North America |
| API Waste Services | Sanitation | United States | North America |
| Appalachian Electric Cooperative (AEC) | Lighting, Electric | United States | North America |
| Appalachian Power | Lighting, Electric | United States | North America |
| Aqua Illinois | Water, Sewer, Sanitation | United States | North America |
| Aqua Indiana | Water, Sewer | United States | North America |
| Aqua New Jersey | Water, Sewer, Television | United States | North America |
| Aqua North Carolina | Water, Sewer | United States | North America |
| Aqua Ohio | Water, Sewer | United States | North America |
| Aqua Pennsylvania | Water, Sewer | United States | North America |
| Aqua S.A. | Water | Poland | Europe |
| Aqua Texas | Water, Sewer | United States | North America |
| Aqua Virginia | Water, Sewer | United States | North America |
| Aqua Water Supply Corporation | Water, Sewer, Natural Gas | United States | North America |
| Aqualia | Water, Sewer, Sanitation | Spain | Europe |
| Aquanet Spolka Akcyjna | Water | Poland | Europe |
| Aquarion Water Company | Water, Irrigation | United States | North America |
| Aquatera | Water, Sewer, Sanitation | United States | North America |
| Arapahoe County Water and Waste Water Authority (ACWWA) | Water | United States | North America |
| Arapahoe County Water and Wastewater Authority (ACWWA) | Water, Irrigation, Sewer | United States | North America |
| Arizona Public Service (APS) | Water, Lighting, Electric | United States | North America |
| Arizona Water Company | Water, Irrigation | United States | North America |
| Ark Valley Rural Electric Cooperative Association | Water, Sewer, Sanitation, Electric | United States | North America |
| Arkansas Oklahoma Gas Corporation (AOG) | Natural Gas | United States | North America |
| Arkansas Valley Electric Cooperative | Water, Landline Phone, Sewer, Sanitation, Lighting, Electric, Internet | United States | North America |
| Arlington County | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Armstrong | Landline Phone, Television, Internet | United States | North America |
| Ascotrade | Natural Gas | Italy | Europe |
| Ashtabula County | Water, Sewer | United States | North America |
| Aspen Waste Systems | Sanitation, Steam | United States | North America |
| Astound Business Solutions | Landline Phone, Television, Internet | United States | North America |
| Atchison-Holt Electric Cooperative | Electric | United States | North America |
| Atco Energy | Electric, Natural Gas | Canada | North America |
| Athens Clarke County | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Athens Services | Water, Sanitation | United States | North America |
| Athens Utilities Board | Water, Sewer, Lighting, Electric, Natural Gas | United States | North America |
| Atikokan Hydro Inc | Electric | Canada | North America |
| Atlantic City Electric | Lighting, Electric, Natural Gas | United States | North America |
| Atlantic Municipal Utilities | Water, Sewer, Lighting, Electric | United States | North America |
| Atlas Disposal Of Utah | Sanitation | United States | North America |
| Atmos Energy | Water, Electric, Natural Gas | United States | North America |
| Auburn Water District | Water, Irrigation, Sewer | United States | North America |
| Auburn Water System Inc | Water, Irrigation | United States | North America |
| Audax Energia | Electric, Natural Gas | Portugal | Europe |
| Audax Energia SA | Electric, Natural Gas | United States | North America |
| Augusta County Service Authority | Water, Sewer | United States | North America |
| Austell Natural Gas System | Natural Gas | United States | North America |
| Austin Utilities | Water, Sewer, Lighting, Electric, Natural Gas | United States | North America |
| Autoridad de acueductos y alcantarillados | Water, Irrigation, Sewer | United States | North America |
| Avion Water Company | Water | United States | North America |
| Avista | Lighting, Electric, Natural Gas | United States | North America |
| AW Billing Services | Water, Landline Phone, Sewer, Sanitation | United States | North America |
| Axpo | Electric, Natural Gas | Italy | Europe |
| Axpo Iberia | Electric | Spain | Europe |
| Badenova | Water, Sewer, Natural Gas | Germany | Europe |
| Baldwin County Sewer Service | Sewer | United States | North America |
| Baldwin EMC | Lighting, Electric | United States | North America |
| Baltimore Gas & Electric (BGE) | Lighting, Electric, Natural Gas | United States | North America |
| Bancroft Clover Water And Sanitation District | Water, Sewer | United States | North America |
| Bandera Electric Cooperative | Electric, Internet | United States | North America |
| Bangalore Electricity Supply Company (BESCOM) | Electric | India | Asia |
| Bangor Natural Gas | Natural Gas | United States | North America |
| Banks County Water System | Water | United States | North America |
| Barker Cypress Municipal Utility District | Water, Sewer | United States | North America |
| Barron Electric Cooperative | Lighting, Electric | United States | North America |
| Bartlett Electric Cooperative | Electric | United States | North America |
| Barton County Electric Cooperative | Lighting, Electric | United States | North America |
| Bartow County Water Department | Water, Irrigation, Sewer | United States | North America |
| Bay County Department of Water And Sewer | Water, Sewer | United States | North America |
| Bay Disposal and Recycling | Sanitation | United States | North America |
| Bay Gas Storage | Natural Gas | United States | North America |
| BC Hydro | Lighting, Electric | Canada | North America |
| BCN Telecom | Landline Phone | United States | North America |
| Beaches Energy Services | Water, Sewer, Sanitation, Lighting, Electric, Natural Gas | United States | North America |
| Bear Creek Water Association | Water, Sewer, Sanitation | United States | North America |
| Beaufort Jasper Water and Sewer Authority (BJWSA) | Water, Irrigation, Sewer | United States | North America |
| Beauregard Electric Cooperative | Lighting, Electric | United States | North America |
| Beaver Falls Municipal Authority | Water, Sewer | United States | North America |
| Beckley Water | Water | United States | North America |
| Bedford Regional Water Authority | Water, Sewer | United States | North America |
| Bedford Rural Electric Cooperative | Electric | United States | North America |
| Bell MTS | Landline Phone, Internet | Canada | North America |
| Bella Vista Property Owners Association | Water | United States | North America |
| Belmont Light | Water, Irrigation, Sewer, Electric | United States | North America |
| Beltrami Electric Cooperative | Lighting, Electric | United States | North America |
| Benbrook Water Authority | Water, Sewer, Sanitation | United States | North America |
| Benco Electric Cooperative | Electric | United States | North America |
| Benton PUD | Lighting, Electric | United States | North America |
| Benton Rural Electric Association | Electric | United States | North America |
| Benton Utilities | Water, Sewer, Electric | United States | North America |
| Berkeley County Public Service Water District | Water, Sewer | United States | North America |
| Berkeley County Water and Sanitation (BCWS) | Water, Irrigation, Sewer | United States | North America |
| Berkeley Electric Cooperative | Lighting, Electric | United States | North America |
| Berkshire Gas | Natural Gas | United States | North America |
| Berryville | Water, Sewer, Sanitation | United States | North America |
| Bertolotti Disposal | Sanitation | United States | North America |
| Bessemer Utilities | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| Big Bend Electric Cooperative Inc | Electric | United States | North America |
| Big Country Electric Cooperative Inc | Lighting, Electric | United States | North America |
| Big Flat Electric Cooperative Inc | Lighting, Electric | United States | North America |
| Big Horn Rural Electric Company | Lighting, Electric | United States | North America |
| Big Sandy RECC | Lighting, Electric | United States | North America |
| Big Sky Gas | Natural Gas | United States | North America |
| Bigelow Oil And Energy | Fuel Oil | United States | North America |
| Birch | Telecom, Landline Phone, Internet | United States | North America |
| Birmingham Water Works | Water, Irrigation, Sewer | United States | North America |
| Bissonnet Municipal Utility District | Water, Irrigation, Sewer | United States | North America |
| Blachly Lane Electric Cooperative | Electric | United States | North America |
| Black Bayou Water Association | Water | United States | North America |
| Black Hills Energy | Water, Sewer, Other Service Type, Lighting, Electric, Natural Gas | United States | North America |
| Black River Electric Cooperative | Lighting, Electric | United States | North America |
| Black River Electric Cooperative | Lighting, Electric | United States | North America |
| Black River Falls Municipal Utilities | Water, Sewer, Electric | United States | North America |
| Black Warrior Electric Membership Corporation | Electric | United States | North America |
| Blairsville Municipal Authority | Water, Sewer, Sanitation | United States | North America |
| Bloomer Utilities | Electric | United States | North America |
| Blossman Gas and Appliance | Propane | United States | North America |
| Blue Bonnet Electric Cooperative | Lighting, Electric | United States | North America |
| Blue Flame Gas | Propane | United States | North America |
| Blue Granite Water Company | Water, Irrigation, Sewer | United States | North America |
| Blue Grass Energy Cooperative | Lighting, Electric | United States | North America |
| Blue NRG | Electric | Australia | Oceania |
| Blue Ridge Electric Co-op | Lighting, Electric | United States | North America |
| Blue Ridge Energy | Lighting, Electric, Propane | United States | North America |
| Blue Ridge West Municipal Utility District | Water, Sewer | United States | North America |
| BlueMark Energy | Natural Gas | United States | North America |
| Bluestem Electric Cooperative Inc | Electric | United States | North America |
| Bluewater Power Distribution Corporation | Water, Sewer, Electric | Canada | North America |
| Blytheville Water Works | Water, Sewer, Sanitation | United States | North America |
| Board of Public Works | Water, Sewer, Sanitation, Electric | United States | North America |
| Board of Water Works of Pueblo | Water, Irrigation, Sewer | United States | North America |
| Bolivar Energy Authority | Lighting, Electric | United States | North America |
| Bona Vista Water Improvement | Water, Sewer | United States | North America |
| Boone County Water District | Water | United States | North America |
| Boone Electric Cooperative | Sewer, Lighting, Electric | United States | North America |
| Boone REMC | Lighting, Electric | United States | North America |
| Bord G√°is Energy | Electric, Natural Gas | Ireland | Europe |
| Borough of Ambler | Water, Irrigation, Sewer | United States | North America |
| Borough Of Baldwin | Water, Sewer | United States | North America |
| Borough of Bonneauville | Water, Sewer | United States | North America |
| Borough Of Carlisle | Water, Sewer, Sanitation | United States | North America |
| Borough of Charleroi Water Authority | Water, Sewer | United States | North America |
| Borough of Elmwood Park | Water | United States | North America |
| Borough of Ephrata | Water, Sewer, Sanitation, Electric | United States | North America |
| Borough of Freehold | Water, Sewer | United States | North America |
| Borough of Hollidaysburg | Water, Sewer | United States | North America |
| Borough of Indiana | Sewer, Sanitation | United States | North America |
| Borough of Madison | Water, Sewer, Electric | United States | North America |
| Borough Of Phoenixville | Water, Sewer, Sanitation | United States | North America |
| Borough of Quakertown | Water, Landline Phone, Sewer, Sanitation, Electric | United States | North America |
| Borough Of Sewickley Water Authority | Water, Sewer | United States | North America |
| Borough of Tamaqua | Water, Sewer | United States | North America |
| Borough of Waynesboro | Water, Sewer | United States | North America |
| Boston Water and Sewer Commission | Water, Irrigation, Sewer, Steam | United States | North America |
| Boulder City | Water, Sewer, Lighting, Electric | United States | North America |
| Bourne Water District | Water, Irrigation | United States | North America |
| Bowie-Cass Electric Cooperative | Lighting, Electric | United States | North America |
| Bowling Green Municipal Utilities (BGMU) | Water, Sewer, Lighting, Electric, Internet | United States | North America |
| Bozrah Light & Power | Lighting, Electric | United States | North America |
| BP Energy Company | Lighting, Electric, Natural Gas | United States | North America |
| Brabant Water | Water | Netherlands | Europe |
| Brainerd Public Utilities | Water, Irrigation, Sewer, Lighting, Electric | United States | North America |
| Braintree Electric Light Department | Lighting, Electric | United States | North America |
| Brazoria County MUD 25 | Water, Sewer | United States | North America |
| Brazoria County MUD 6 | Water, Sewer | United States | North America |
| Brazoria County Municipal Utility District 31 | Water, Sewer | United States | North America |
| Brianz Acque S.r.l. | Water, Sewer | Italy | Europe |
| Bridgestone Municipal Utility District | Water, Sewer, Sanitation | United States | North America |
| BrightRidge | Telecom, Lighting, Electric, Internet | United States | North America |
| Brilliant Energy | Lighting, Electric | United States | North America |
| Bristol Tennessee Essential Services (BTES) | Landline Phone, Television, Lighting, Electric, Internet | United States | North America |
| British Gas | Electric, Natural Gas | United Kingdom | Europe |
| Brněnské vodárny a kanalizace | Water, Sewer | Czech Republic | Europe |
| Broad River Electric Cooperative Incorporated | Lighting, Electric | United States | North America |
| Broad River Water Authority | Water, Sewer, Sanitation | United States | North America |
| Brodhead Creek Regional Authority | Water, Sewer | United States | North America |
| Brodhead Water And Light | Electric | United States | North America |
| Broken Bow Municipal Utilities | Water, Sewer, Sanitation, Electric | United States | North America |
| Brook Green Supply | Electric, Natural Gas | United Kingdom | Europe |
| Brookings Municipal Utilities | Water, Irrigation, Sewer, Electric | United States | North America |
| Brownsville Public Utilities Board | Water, Irrigation, Sewer, Sanitation, Lighting, Electric | United States | North America |
| Brownsville Utilities | Water, Sewer, Lighting, Sanitation, Electric, Natural Gas, Propane | United States | North America |
| Bruce Power Direct | Electric | Canada | North America |
| Brunswick County | Water, Irrigation, Sewer | United States | North America |
| Brunswick Electric Membership Corporation (BEMC) | Lighting, Electric | United States | North America |
| Brunswick Glynn County | Water, Irrigation, Sewer | United States | North America |
| Brunswick Regional Water and Sewer | Water, Irrigation, Sewer | United States | North America |
| Brushy Creek Municipal Utility District | Water, Sewer | United States | North America |
| Bryan Texas Utilities (BTU) | Water, Irrigation, Sewer, Sanitation, Lighting, Electric | United States | North America |
| BSES Rajdhani Power Limited | Electric | India | Asia |
| Buckeye Rural Electric Cooperative(REC) | Electric | United States | North America |
| Bucks County Water And Sewer Authority | Water, Sewer | United States | North America |
| Buena Vista Charter Township | Water, Sewer, Sanitation | United States | North America |
| Bulb | Electric, Natural Gas | United Kingdom | Europe |
| Bullfrog Power | Electric | Canada | North America |
| Bulloch Solutions | Landline Phone, Internet | United States | North America |
| Bullock Pen Water District | Water, Sewer | United States | North America |
| Burbank Water and Power | Water, Irrigation, Sewer, Sanitation, Lighting, Electric | United States | North America |
| Burke-Divide Electric Cooperative | Electric | United States | North America |
| Burlington Hydro | Water, Sewer, Electric | Canada | North America |
| Burrtec | Sewer, Sanitation, Electric, Natural Gas | United States | North America |
| Burt County Public Power District | Electric | United States | North America |
| Business Stream | Water, Sewer, Sanitation | United Kingdom | Europe |
| Butler County Water and Sewer | Water, Sewer | United States | North America |
| Butler Public Power District | Lighting, Electric | United States | North America |
| Butler Rural Electric Cooperative | Lighting, Electric | United States | North America |
| Butte Electric Cooperative Incorporated | Lighting, Electric | United States | North America |
| Byron | Water, Irrigation, Sewer | United States | North America |
| CAFC S.p.A | Water, Sewer | Italy | Europe |
| Calcutta Electric Supply Corporation (CESC) | Electric | India | Asia |
| California Water Service | Water, Irrigation, Sewer, Sanitation, Natural Gas | United States | North America |
| Callaway Electric Cooperative | Lighting, Electric | United States | North America |
| Calpine Energy Solutions | Electric, Natural Gas | United States | North America |
| Calumet City Water Department | Water, Sewer, Sanitation | United States | North America |
| Campora Propane | Propane, Natural Gas | United States | North America |
| Campus Energy | Electric, Natural Gas | Canada | North America |
| Canadian Niagara Power Inc. | Lighting, Electric | United States | North America |
| Canadian Valley Electric Cooperative | Lighting, Electric | United States | North America |
| Canal de Isabel II | Water, Sewer | Spain | Europe |
| Caney Fork Electric Cooperative TN | Sanitation, Lighting, Electric | United States | North America |
| Canoochee Electric Membership Corporation (EMC) | Lighting, Electric | United States | North America |
| Canton Township | Water, Sewer | United States | North America |
| Cape Fear Public Utility Authority | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Cape Hatteras Electric Cooperative | Lighting, Electric | United States | North America |
| Capital Electric Cooperative | Lighting, Electric | United States | North America |
| Capital Power | Electric | Canada | North America |
| Capital Region Water | Water, Sewer | United States | North America |
| Carbon Power and Light Incorporated | Lighting, Electric | United States | North America |
| Cardinal Natural Gas | Natural Gas | United States | North America |
| Caribbean Utilities Company | Electric | United Kingdom | Europe |
| Carma | Water, Electric | Canada | North America |
| Carolina Water Service of North Carolina | Water, Sewer | United States | North America |
| Carpinteria Valley Water District | Water | United States | North America |
| Carroll County Electric Department | Lighting, Electric | United States | North America |
| Carroll Electric Cooperative Corporation | Sanitation, Lighting, Electric | United States | North America |
| Carroll Electric Membership Cooperative | Lighting, Electric | United States | North America |
| Carroll White REMC | Lighting, Electric | United States | North America |
| Carrollton Township | Water, Irrigation, Sewer | United States | North America |
| Carteret-Craven Electric Cooperative (CCEC) | Lighting, Electric | United States | North America |
| Carthage Water and Electric Plant (CWEP) | Water, Sewer, Sanitation, Electric | United States | North America |
| Cascade Natural Gas Corporation | Natural Gas | United States | North America |
| Casella Resource Solutions | Sanitation, Natural Gas | United States | North America |
| Cass County Electric Cooperative | Lighting, Electric | United States | North America |
| Castle Pines North Metropolitan District | Water, Sewer, Sanitation | United States | North America |
| Castle Water | Water, Sewer, Sanitation | United Kingdom | Europe |
| Catoosa Utility District Auth | Water, Sewer | United States | North America |
| Cavallo Energy Texas | Lighting, Electric | United States | North America |
| Cecil County | Water, Sewer | United States | North America |
| Cedar Falls Utilities (CFU) | Water, Telecom, Sewer, Television, Lighting, Electric, Internet, Natural Gas | United States | North America |
| Cedar-Knox Public Power District | Lighting, Electric | United States | North America |
| Cedarburg Light & Water Utility | Water, Sewer, Electric | United States | North America |
| Centennial Water and Sanitation District | Water, Sewer, Lighting | United States | North America |
| CenterPoint Energy | Other Service Type, Lighting, Electric, Natural Gas | United States | North America |
| Centerton Water and Sewer Department | Water, Sewer | United States | North America |
| Central Alabama Electric Cooperative | Lighting, Electric | United States | North America |
| Central Arkansas Water | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Central Electric Cooperative | Lighting, Electric | United States | North America |
| Central Electric Cooperative | Electric | United States | North America |
| Central Electric Cooperative | Lighting, Electric | United States | North America |
| Central Electric Cooperative | Electric | United States | North America |
| Central Electric Membership Corporation | Lighting, Electric | United States | North America |
| Central Florida Electric Cooperative | Lighting, Electric | United States | North America |
| Central Georgia Electric Membership Corporation (EMC) | Lighting, Electric, Natural Gas | United States | North America |
| Central Hudson | Lighting, Electric, Natural Gas | United States | North America |
| Central Lincoln Public Utility District | Lighting, Electric | United States | North America |
| Central Louisiana Electric Company Incorporated (CLECO) | Lighting, Electric, Natural Gas | United States | North America |
| Central Maine Power | Water, Sewer, Lighting, Electric, Natural Gas | United States | North America |
| Central Missouri Electric Cooperative Inc | Lighting, Electric | United States | North America |
| Central New Mexico Electric Cooperative (CNMEC) | Lighting, Electric | United States | North America |
| Central Texas Electric Cooperative Inc | Electric | United States | North America |
| Central Valley Electric Cooperative Inc. | Water, Lighting, Electric | United States | North America |
| Central Virginia Electric Cooperative | Lighting, Electric | United States | North America |
| Centre Wellington Hydro Limited | Water, Irrigation, Sewer, Electric | Canada | North America |
| CenturyLink | Landline Phone, Television, Other Service Type, Internet | United States | North America |
| CenturyLink Business | Telecom, Landline Phone, Television, Internet | United States | North America |
| Chambers County Municipal Utility District #1 | Water, Sewer | United States | North America |
| Champion Energy Services | Lighting, Electric, Natural Gas | United States | North America |
| Chamundeshwari Electricity Supply Corporation (CESCOM) | Electric | India | Asia |
| Charles County | Water, Sewer | United States | North America |
| Charles Town Utility Board | Water, Sewer | United States | North America |
| Charleston Water System | Water, Sewer | United States | North America |
| Charter Township of Clinton Water & Sewer Division | Water, Sewer, Sanitation | United States | North America |
| Charter Township of Plymouth | Water, Sewer | United States | North America |
| Charter Township of Waterford | Water, Irrigation, Sewer | United States | North America |
| Charter Wood Municipal Utility District | Water, Sewer | United States | North America |
| Chattanooga Gas | Electric, Natural Gas | United States | North America |
| Chattooga County | Water | United States | North America |
| Chelan County Public Utilities Department | Water, Sewer, Lighting, Electric | United States | North America |
| Chelford City Municipal Utility District | Water, Sewer | United States | North America |
| Cherokee County Electric Cooperative Association | Lighting, Electric | United States | North America |
| Cherokee County Water & Sewerage Authority | Water, Sewer, Lighting | United States | North America |
| Cherokee Electric Cooperative | Lighting, Electric | United States | North America |
| Cherokee Metropolitan District | Water, Sewer, Lighting, Electric | United States | North America |
| Cherryland Electric Cooperative | Electric | United States | North America |
| Chesapeake Utilities Corporation | Water, Irrigation, Sewer, Natural Gas | United States | North America |
| Chester County Natural Gas Authority | Natural Gas | United States | North America |
| Chester Metropolitan District | Water, Sewer | United States | North America |
| Chester Water Authority (CWA) | Water | United States | North America |
| Chesterfield County Utilities Department | Water, Irrigation, Sewer | United States | North America |
| Chickasaw Electric Cooperative | Lighting, Electric | United States | North America |
| Chicopee Electric Light | Lighting, Electric | United States | North America |
| Chillicothe Municipal Utilities (CMU) | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| Chippewa Valley Electric Cooperative | Electric, Fuel Oil | United States | North America |
| Choctawhatchee Electric Cooperative (CEC) | Lighting, Electric | United States | North America |
| Choptank Electric Cooperative | Lighting, Electric | United States | North America |
| Chugach Electric Association | Lighting, Electric | United States | North America |
| CIMA Energy Solutions | Electric, Natural Gas | United States | North America |
| Cimarron Electric Cooperative | Electric | United States | North America |
| Cinco MUD No. 2 | Water, Sewer | United States | North America |
| Cirro Energy | Electric | United States | North America |
| Citizens Electric Company | Lighting, Electric | United States | North America |
| Citizens Electric Corporation | Lighting, Electric | United States | North America |
| Citizens Energy Group | Water, Irrigation, Sewer, Steam, Chilled Water, Natural Gas | United States | North America |
| Citizens Gas Utility District | Internet, Natural Gas | United States | North America |
| Citrus County Utilities | Water, Sewer, Sanitation | United States | North America |
| Citrus Heights Water District | Water, Irrigation | United States | North America |
| City and County of Broomfield | Water, Sewer | United States | North America |
| City Corporation Russellville Water and Sewer System | Water, Irrigation, Sewer | United States | North America |
| City of Abbeville | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of Abbotsford | Water, Sewer | United States | North America |
| City of Abbotsford | Water, Sewer | Canada | North America |
| City of Aberdeen | Water, Sewer | United States | North America |
| City of Aberdeen | Water, Sewer | United States | North America |
| City of Abilene | Water, Sewer, Sanitation | United States | North America |
| City Of Adairsville Utilities | Water, Sewer, Sanitation, Natural Gas | United States | North America |
| City of Airdrie | Water, Irrigation, Sewer | Canada | North America |
| City of Alamogordo | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Alamosa | Water, Sewer, Sanitation | United States | North America |
| City Of Albany Department of Water Department And Water Supply | Water, Sewer | United States | North America |
| City of Alcoa | Water, Sewer, Lighting, Sanitation, Electric | United States | North America |
| City of Alexander City | Water, Sewer, Lighting, Sanitation, Electric, Natural Gas | United States | North America |
| City of Alhambra | Water, Sewer, Sanitation | United States | North America |
| City of Allen | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Alliance | Water, Sewer, Sanitation, Lighting, Electric, Natural Gas | United States | North America |
| City of Alliance | Water, Sewer, Sanitation | United States | North America |
| City of Alma | Water, Sewer, Sanitation | United States | North America |
| City Of Altamonte Springs | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City Of Altoona | Water, Irrigation, Sewer | United States | North America |
| City of Alvin | Water, Sewer, Sanitation | United States | North America |
| City of Amarillo | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of American Canyon | Water, Sewer | United States | North America |
| City of Americus | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Ames | Water, Irrigation, Sewer, Lighting, Electric | United States | North America |
| City Of Amherst Utilities Department | Water, Landline Phone, Sewer, Electric, Internet | United States | North America |
| City of Andalusia | Water, Sewer, Lighting, Electric | United States | North America |
| City of Anderson | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Anderson | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of Angleton | Water, Sewer, Sanitation | United States | North America |
| City Of Angola | Water, Irrigation | United States | North America |
| City of Ankeny | Water, Sewer | United States | North America |
| City of Ann Arbor | Water, Sewer, Sanitation | United States | North America |
| City of Annapolis | Water, Sewer, Sanitation | United States | North America |
| City of Antigo | Water, Sewer | United States | North America |
| City of Antioch | Water, Sewer | United States | North America |
| City of Apple Valley | Water, Irrigation, Sewer, Lighting | United States | North America |
| City of Aransas Pass | Water, Sewer, Sanitation | United States | North America |
| City Of Arcadia | Water, Sewer, Sanitation | United States | North America |
| City Of Arcadia | Water, Sewer, Electric | United States | North America |
| City Of Arden Hills | Water, Sewer | United States | North America |
| City of Arlington | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Artesia | Water, Sewer, Sanitation | United States | North America |
| City of Asheville | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Ashland | Water, Electric | United States | North America |
| City of Ashland | Water, Irrigation, Sewer | United States | North America |
| City of Ashland | Water, Sewer, Electric | United States | North America |
| City of Astoria | Water, Sewer | United States | North America |
| City of Athens | Water, Sewer, Sanitation, Lighting, Electric, Natural Gas | United States | North America |
| City of Athens | Water, Sewer, Sanitation | United States | North America |
| City of Atlanta Department of Watershed Management | Water, Irrigation, Sewer, Electric | United States | North America |
| City Of Atlantic Beach | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Atlantis | Water, Irrigation, Sewer | United States | North America |
| City of Atwater | Water, Sewer, Sanitation | United States | North America |
| City of Auburn | Water, Sewer | United States | North America |
| City of Auburn | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Auburn | Water, Irrigation, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of Auburn Hills | Water, Irrigation, Sewer | United States | North America |
| City of Auburndale | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Augusta | Water, Sewer, Sanitation, Electric | United States | North America |
| City of Aurora | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Aurora | Sewer, Sanitation | United States | North America |
| City Of Aurora Water | Water, Irrigation, Sewer | United States | North America |
| City Of Aurora Water Utility | Water, Sewer | United States | North America |
| City of Austin | Water, Irrigation, Sewer, Other Service Type, Sanitation, Lighting, Electric, Chilled Water | United States | North America |
| City of Avon | Water, Sewer | United States | North America |
| City of Avon Park | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Avondale | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Azle | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Aztec | Water, Sewer, Sanitation, Electric | United States | North America |
| City of Azusa | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of Bakersfield | Water, Sewer, Sanitation | United States | North America |
| City of Baltimore | Water, Sewer, Lighting, Steam, Electric | United States | North America |
| City of Banning | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of Baraboo | Water, Sewer, Lighting | United States | North America |
| City of Barberton | Water, Sewer, Sanitation, Lighting | United States | North America |
| City of Bardstown | Water, Irrigation, Sewer, Television, Lighting, Sanitation, Electric, Internet | United States | North America |
| City of Barnesville | Landline Phone, Electric, Internet | United States | North America |
| City of Barrie | Water, Sewer | Canada | North America |
| City of Barron | Water, Sewer, Electric | United States | North America |
| City of Barstow Utility Billing | Water, Sewer, Sanitation | United States | North America |
| City of Bartlesville | Water, Sewer, Sanitation, Lighting | United States | North America |
| City of Bartlett | Water, Sewer, Sanitation, Lighting | United States | North America |
| City of Bartow | Water, Sanitation, Electric | United States | North America |
| City of Batavia | Water, Sewer, Electric | United States | North America |
| City of Battle Creek | Water, Irrigation, Sewer | United States | North America |
| City of Battle Ground | Water, Sewer | United States | North America |
| City of Bay City | Water, Sewer, Sanitation, Natural Gas | United States | North America |
| City of Baytown | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Beaumont | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City Of Beaver Dam | Water, Sewer | United States | North America |
| City Of Beaverton | Water, Irrigation, Sewer | United States | North America |
| City of Bedford | Water, Sewer | United States | North America |
| City of Bedford | Water, Sewer, Sanitation | United States | North America |
| City of Bedford | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Beech Grove | Water, Sewer, Sanitation | United States | North America |
| City of Beeville | Water, Sewer, Sanitation | United States | North America |
| City of Bellaire | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Bellbrook | Water, Irrigation | United States | North America |
| City of Belleview | Water, Sewer, Electric | United States | North America |
| City of Belleville | Sewer, Sanitation | United States | North America |
| City of Bellevue | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Bellevue | Water, Sewer | United States | North America |
| City of Bellevue | Water, Sewer, Sanitation, Electric, Internet | United States | North America |
| City Of Bellingham | Water, Irrigation, Sewer | United States | North America |
| City of Belmont | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Beloit | Water, Irrigation, Sewer, Electric | United States | North America |
| City of Belton | Water, Irrigation, Sewer | United States | North America |
| City of Belton | Water, Sewer, Sanitation | United States | North America |
| City of Bemidji | Water, Irrigation, Sewer | United States | North America |
| City of Bend | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Benicia | Water, Sewer | United States | North America |
| City Of Bennettsville | Electric | United States | North America |
| City of Benson | Water, Lighting, Electric | United States | North America |
| City of Bentonville | Water, Irrigation, Sewer, Lighting, Sanitation, Electric | United States | North America |
| City of Berea Municipal Utilities | Water, Sewer, Electric | United States | North America |
| City of Bethany | Water, Sewer, Sanitation | United States | North America |
| City of Bethlehem | Water, Sewer, Sanitation | United States | North America |
| City of Beverly Hills | Water, Sewer, Sanitation | United States | North America |
| City of Big Lake | Water, Sewer, Lighting | United States | North America |
| City of Big Rapids | Water, Sewer, Sanitation | United States | North America |
| City of Billings | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City Of Biloxi | Water, Sewer, Sanitation | United States | North America |
| City of Bismarck | Water, Sewer, Sanitation, Lighting | United States | North America |
| City of Blaine | Water, Sewer, Sanitation, Electric | United States | North America |
| City of Bloomington | Water, Sewer, Sanitation | United States | North America |
| City of Bloomington | Water, Irrigation, Sewer | United States | North America |
| City of Blue Springs | Water, Sewer | United States | North America |
| City of Bluffton | Water, Sewer, Electric | United States | North America |
| City of Boise | Water, Sewer, Sanitation, Natural Gas | United States | North America |
| City of Boone | Water, Sewer, Sanitation | United States | North America |
| City of Bossier City | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Bothell | Water, Irrigation, Sewer | United States | North America |
| City of Boulder | Water, Irrigation, Sewer, Electric | United States | North America |
| City of Bowling Green | Water, Sewer, Lighting, Electric | United States | North America |
| City of Boynton Beach | Water, Sewer, Sanitation, Natural Gas | United States | North America |
| City of Bozeman | Water, Sewer, Sanitation | United States | North America |
| City of Branson | Water, Irrigation, Sewer | United States | North America |
| City of Brantford | Water, Sewer | Canada | North America |
| City of Brawley | Water, Sewer | United States | North America |
| City of Brea | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Bremerton | Water, Sewer | United States | North America |
| City of Brentwood | Water, Sewer | United States | North America |
| City of Brentwood | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Bridgeport | Water, Sewer, Lighting, Electric | United States | North America |
| City Of Brisbane | Water, Sewer | United States | North America |
| City of Brockton | Water, Sewer, Sanitation | United States | North America |
| City of Broken Arrow | Water, Sewer, Sanitation, Lighting | United States | North America |
| City of Brookfield | Water, Sewer | United States | North America |
| City of Brooklyn Center | Water, Irrigation, Sewer, Lighting | United States | North America |
| City of Brooklyn Park | Water, Irrigation, Sewer, Sanitation, Lighting | United States | North America |
| City of Brunswick | Water, Sewer | United States | North America |
| City of Bryant | Water, Irrigation, Sewer | United States | North America |
| City of Buckeye | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Bucyrus | Water, Sewer, Sanitation | United States | North America |
| City Of Buellton | Water, Irrigation, Sewer | United States | North America |
| City of Buena Park | Water, Sewer | United States | North America |
| City of Buffalo | Water, Sewer, Sanitation, Electric | United States | North America |
| City of Buford | Water, Sewer, Sanitation, Electric, Natural Gas | United States | North America |
| City of Burleson | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Burley | Water, Sewer, Sanitation, Electric | United States | North America |
| City of Burlingame | Water, Sewer, Sanitation | United States | North America |
| City of Burnaby | Water, Irrigation, Sewer, Sanitation | Canada | North America |
| City of Burnet | Water, Sewer, Lighting, Sanitation, Electric | United States | North America |
| City of Burnsville | Water, Irrigation, Sewer, Lighting | United States | North America |
| City of Butler | Water, Sewer, Sanitation, Electric | United States | North America |
| City of Butler | Water, Sewer, Sanitation | United States | North America |
| City of Caledonia | Water, Sewer, Lighting, Electric | United States | North America |
| City of Calera | Water, Irrigation, Sewer, Sanitation, Natural Gas | United States | North America |
| City of Calexico | Water, Sewer, Sanitation | United States | North America |
| City of Calhoun | Water, Sewer, Lighting, Sanitation, Electric, Internet | United States | North America |
| City of Calistoga | Water, Sewer | United States | North America |
| City of Camarillo | Water, Irrigation, Sewer, Sanitation, Electric | United States | North America |
| City of Cambridge | Water, Sewer, Electric | United States | North America |
| City of Cambridge | Water, Irrigation, Sewer, Lighting | United States | North America |
| City of Camden | Water, Sewer | United States | North America |
| City of Camden | Water, Irrigation, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of Campbellsville | Water, Sewer, Sanitation | United States | North America |
| City of Canon City | Water | United States | North America |
| City Of Canton | Water, Sewer | United States | North America |
| City of Canton | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Canton City | Water, Sewer, Sanitation | United States | North America |
| City of Cape Coral | Water, Irrigation, Sewer | United States | North America |
| City of Cape Girardeau | Water, Sewer | United States | North America |
| City of Carlsbad | Water, Sewer, Sanitation | United States | North America |
| City of Carlsbad | Water, Sewer, Sanitation | United States | North America |
| City of Carlyle | Electric | United States | North America |
| City of Carrollton | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Carrollton | Water, Sewer, Sanitation | United States | North America |
| City of Carson City | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Cartersville | Water, Sewer, Sanitation, Lighting, Electric, Natural Gas | United States | North America |
| City Of Carthage | Water, Sewer | United States | North America |
| City of Casper | Water, Sewer, Sanitation | United States | North America |
| City of Casselberry | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Cassville | Water, Sewer | United States | North America |
| City of Cayce | Water, Sewer, Sanitation | United States | North America |
| City of Cedar Hill | Water, Sewer, Sanitation | United States | North America |
| City of Cedar Park | Water, Sewer | United States | North America |
| City of Celina | Water, Irrigation, Sewer, Electric | United States | North America |
| City of Centralia | Water, Irrigation, Sewer, Sanitation, Electric | United States | North America |
| City of Ceres | Water, Sewer, Sanitation | United States | North America |
| City of Champlin | Water, Irrigation, Sewer, Lighting | United States | North America |
| City of Chandler | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Chanhassen | Water, Irrigation, Sewer | United States | North America |
| City of Charlotte and Mecklenburg County | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Charlottesville | Water, Sewer, Natural Gas | United States | North America |
| City of Chaska | Water, Irrigation, Sewer, Lighting, Electric | United States | North America |
| City of Chatsworth Water Commission | Water, Irrigation, Sewer | United States | North America |
| City of Chattanooga Department of Public Works | Water, Sewer | United States | North America |
| City Of Chelsea | Water, Sewer, Electric | United States | North America |
| City of Chelsea | Water, Irrigation, Sewer, Sanitation, Electric | United States | North America |
| City of Cherryville | Water, Irrigation, Sewer, Sanitation, Electric | United States | North America |
| City of Chetek | Water, Sewer, Sanitation, Lighting | United States | North America |
| City of Cheyenne | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Chicago | Water, Sewer, Sanitation | United States | North America |
| City of Chillicothe | Water | United States | North America |
| City of Chilliwack | Water, Sewer | Canada | North America |
| City of Chino | Water, Sewer, Sanitation | United States | North America |
| City Of Chino Hills | Water, Sewer | United States | North America |
| City Of Choctaw | Water, Sewer | United States | North America |
| City of Chula Vista | Sewer | United States | North America |
| City of Circleville | Water, Irrigation, Sewer | United States | North America |
| City of Claremont | Sewer, Sanitation | United States | North America |
| City of Claremore | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of Clarkston | Sanitation | United States | North America |
| City of Clarksville | Water, Sewer, Natural Gas | United States | North America |
| City of Clearwater | Water, Irrigation, Sewer, Sanitation, Natural Gas | United States | North America |
| City of Clemson | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Clermont | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Cleveland | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Cleveland Heights | Water, Sewer, Sanitation | United States | North America |
| City of Clinton | Water, Irrigation, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of Clinton | Water, Sewer, Sanitation | United States | North America |
| City of Cloquet | Water, Sewer | United States | North America |
| City of Cloverdale | Water, Irrigation, Sewer | United States | North America |
| City of Clovis | Water, Sewer, Sanitation | United States | North America |
| City of Cocoa | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Coconut Creek | Water, Sewer | United States | North America |
| City of Cold Lake | Water, Sewer, Sanitation | Canada | North America |
| City of Coldwater | Water, Sewer, Lighting, Electric, Internet | United States | North America |
| City of College Park | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of College Station | Water, Irrigation, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of Colonial Heights | Water, Sewer, Sanitation | United States | North America |
| City of Colton | Water, Sewer, Lighting, Electric | United States | North America |
| City of Columbia | Water, Irrigation, Sewer, Sanitation, Electric | United States | North America |
| City of Columbia | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Columbus | Water, Irrigation, Sewer, Lighting, Sanitation, Electric | United States | North America |
| City of Commerce | Water, Sewer, Sanitation, Lighting, Electric, Natural Gas | United States | North America |
| City of Compton | Water, Sewer, Sanitation | United States | North America |
| City of Concord | Water, Irrigation, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of Conroe | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Cookeville | Water, Sewer, Lighting, Sanitation, Electric, Natural Gas | United States | North America |
| City of Coon Rapids | Water, Irrigation, Sewer | United States | North America |
| City of Coppell | Water, Sewer, Sanitation | United States | North America |
| City of Copperas Cove | Water, Sewer, Sanitation | United States | North America |
| City of Coralville | Water, Sewer | United States | North America |
| City of Corinth | Water, Sewer, Sanitation | United States | North America |
| City of Corona | Water, Irrigation, Sewer, Electric | United States | North America |
| City of Corpus Christi | Water, Irrigation, Sewer, Sanitation, Lighting, Natural Gas | United States | North America |
| City of Corvallis | Water, Irrigation, Sewer | United States | North America |
| City of Cotati | Water, Irrigation, Sewer | United States | North America |
| City of Cottage Grove | Water, Sewer, Lighting | United States | North America |
| City of Cottage Grove | Water, Sewer, Sanitation | United States | North America |
| City of Covington | Water, Sewer, Sanitation, Lighting, Electric, Natural Gas | United States | North America |
| City of Covington | Water, Sewer, Sanitation | United States | North America |
| City of Crowley | Water, Sewer, Sanitation | United States | North America |
| City Of Crown Point | Water, Irrigation, Sewer | United States | North America |
| City of Crystal | Water, Irrigation, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of Crystal Lake | Water, Sewer | United States | North America |
| City of Cuero | Electric | United States | North America |
| City of Cumberland | Water, Sewer, Sanitation | United States | North America |
| City of Cuyahoga Falls | Water, Irrigation, Sewer, Sanitation, Electric | United States | North America |
| City of Dallas | Water, Irrigation, Sewer, Lighting, Sanitation | United States | North America |
| City of Dalworthington Gardens | Water, Sewer | United States | North America |
| City of Dania Beach | Water, Irrigation, Sewer | United States | North America |
| City of Danville | Water, Telecom, Sewer, Lighting, Sanitation, Electric, Natural Gas | United States | North America |
| City of Darlington | Water, Sewer, Sanitation | United States | North America |
| City of Davenport | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Davenport | Water, Sewer, Sanitation, Fuel Oil | United States | North America |
| City of Davis | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Dayton | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of Daytona Beach | Water, Sewer, Sanitation | United States | North America |
| City of De Pere | Water, Sewer | United States | North America |
| City of Dearborn | Water, Sewer | United States | North America |
| City of Decatur | Water, Sewer, Sanitation | United States | North America |
| City Of Deer Park | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Deerfield Beach | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City Of Defiance | Water, Sewer | United States | North America |
| City of DeFuniak Springs | Water, Sewer, Sanitation, Natural Gas | United States | North America |
| City Of Dekalb | Water, Sewer, Sanitation | United States | North America |
| City of DeLand | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Delano | Water, Sewer, Sanitation | United States | North America |
| City of Delaware | Water, Sewer, Sanitation | United States | North America |
| City of Delphos | Water, Sewer | United States | North America |
| City of Delta | Water, Sewer, Sanitation | Canada | North America |
| City of Delta | Water, Sewer, Lighting, Sanitation, Electric | United States | North America |
| City of Deltona | Water, Irrigation, Sewer | United States | North America |
| City of Denham Springs | Water, Irrigation, Sewer, Sanitation, Natural Gas | United States | North America |
| City of Denison | Water, Sewer, Sanitation | United States | North America |
| City of Denton | Water, Irrigation, Sewer, Lighting, Sanitation, Electric | United States | North America |
| City of Derby | Water, Irrigation, Sewer | United States | North America |
| City of Des Plaines | Water, Sewer, Sanitation | United States | North America |
| City of Detroit | Water, Sewer, Electric | United States | North America |
| City of Detroit Lakes | Water, Sewer, Lighting, Electric | United States | North America |
| City of Dickinson | Water, Irrigation, Sewer, Lighting, Electric | United States | North America |
| City of Dinuba | Water, Sewer, Sanitation | United States | North America |
| City of Dothan | Water, Irrigation, Sewer, Lighting, Electric | United States | North America |
| City of Dover | Water, Irrigation, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of Dover | Water, Sewer, Electric | United States | North America |
| City of Dover | Water, Irrigation, Sewer, Lighting, Electric | United States | North America |
| City of Downey | Water, Sewer | United States | North America |
| City Of Dry Ridge | Water, Sewer | United States | North America |
| City of Dublin | Water, Irrigation, Sewer, Sanitation, Natural Gas | United States | North America |
| City of Dubuque | Water, Sewer, Sanitation | United States | North America |
| City of Duluth Comfort System | Water, Sewer, Lighting, Natural Gas | United States | North America |
| City of Duncan | Water, Sewer, Lighting, Sanitation, Electric | United States | North America |
| City of Duncanville | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Dunedin | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City Of Dunn | Water, Irrigation, Sewer | United States | North America |
| City of DuPont | Water, Irrigation, Sewer | United States | North America |
| City of Durham | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Eagan | Water, Irrigation, Sewer, Lighting, Electric | United States | North America |
| City Of Eagle Lake | Water, Sewer, Sanitation | United States | North America |
| City of Eagle Pass | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of East Chicago | Water, Sewer | United States | North America |
| City of East Lansing | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of East Man | Water, Sewer, Sanitation | United States | North America |
| City of Eau Claire | Water, Sewer | United States | North America |
| City of Eden | Water, Sewer, Sanitation | United States | North America |
| City of Eden Prairie | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Edgerton | Water, Sewer | United States | North America |
| City of Edina | Water, Irrigation, Sewer | United States | North America |
| City of Edinburg | Water, Sewer, Sanitation | United States | North America |
| City of Edmond | Water, Irrigation, Sewer, Lighting, Sanitation, Electric | United States | North America |
| City of Edmundston | Water, Sewer, Lighting, Electric | Canada | North America |
| City of Edwardsville | Water, Sewer | United States | North America |
| City of El Mirage | Water, Sewer, Sanitation | United States | North America |
| City of El Monte | Water | United States | North America |
| City of El Segundo | Water, Sewer | United States | North America |
| City of Elgin | Water, Sewer, Sanitation, Natural Gas | United States | North America |
| City of Elizabeth City | Water, Sewer, Lighting, Electric | United States | North America |
| City of Elizabethtown | Water, Sewer, Natural Gas | United States | North America |
| City of Elk City | Water, Sewer, Sanitation | United States | North America |
| City of Elko | Water, Irrigation, Sewer, Lighting, Electric | United States | North America |
| City of Elyria | Water, Sewer, Sanitation | United States | North America |
| City of Englewood | Water, Sewer, Sanitation | United States | North America |
| City of Englewood | Water, Sewer, Sanitation | United States | North America |
| City of Enid | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Ephrata | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Escalon | Water | United States | North America |
| City of Eudora | Water, Sewer, Electric | United States | North America |
| City of Eufaula | Water, Sewer, Sanitation | United States | North America |
| City of Eustis | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Evanston | Water, Sewer, Sanitation | United States | North America |
| City of Everett | Water, Irrigation, Sewer, Sanitation, Natural Gas | United States | North America |
| City of Fairborn | Water, Sewer, Sanitation | United States | North America |
| City of Fairburn | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of Fairfield | Water, Irrigation, Sewer | United States | North America |
| City of Fairhope | Water, Irrigation, Sewer, Sanitation, Lighting, Electric, Natural Gas | United States | North America |
| City of Fairmont | Water, Sewer, Electric | United States | North America |
| City of Fairmont | Water, Sewer, Sanitation | United States | North America |
| City of Falls City | Water, Sewer, Electric, Natural Gas | United States | North America |
| City of Fargo | Water, Irrigation, Sewer, Other Service Type, Lighting, Sanitation, Electric | United States | North America |
| City of Faribault | Water, Irrigation, Sewer | United States | North America |
| City of Farmers Branch | Water, Irrigation, Sewer | United States | North America |
| City of Farmington | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City Of Farmington | Water, Sewer, Sanitation, Lighting | United States | North America |
| City of Farmington | Water, Sewer, Lighting, Electric | United States | North America |
| City of Fayetteville | Water, Sewer, Sanitation | United States | North America |
| City of Fayetteville | Water, Sewer, Sanitation | United States | North America |
| City of Federal Heights | Water, Sewer, Sanitation | United States | North America |
| City of Fernandina Beach | Water, Sewer, Sanitation | United States | North America |
| City of Fife | Water, Irrigation, Sewer | United States | North America |
| City of Findlay | Water, Sewer | United States | North America |
| City of Fitchburg | Water, Sewer | United States | North America |
| City of Flagstaff | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Florence | Water, Sewer, Sanitation | United States | North America |
| City of Florence | Water, Sewer, Sanitation, Lighting, Electric, Natural Gas | United States | North America |
| City of Florence | Water, Sewer | United States | North America |
| City Of Folsom | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Fond Du Lac | Water, Irrigation, Sewer | United States | North America |
| City Of Forest City | Sanitation, Electric | United States | North America |
| City of Forest Lake | Water, Irrigation, Sewer | United States | North America |
| City Of Forney TX | Water, Sewer, Sanitation | United States | North America |
| City of Fort Collins | Water, Sewer, Lighting, Sanitation, Electric | United States | North America |
| City of Fort Dodge | Water, Irrigation | United States | North America |
| City of Fort Lauderdale | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Fort Oglethorpe | Water, Sewer | United States | North America |
| City Of Fort Pierce Utilities Authority (FPUA) | Water, Sewer, Lighting, Sanitation, Electric, Natural Gas | United States | North America |
| City of Fort Smith | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Fort Valley Utility Commission | Water, Sewer, Sanitation, Electric, Natural Gas | United States | North America |
| City of Fort Worth | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Foster City | Water, Irrigation, Sewer | United States | North America |
| City of Fountain | Water, Irrigation, Sewer, Lighting, Electric, Natural Gas | United States | North America |
| City of Framingham | Water, Irrigation, Sewer | United States | North America |
| City of Franklin | Water, Irrigation, Sewer | United States | North America |
| City Of Franklin | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Frederick | Water, Sewer, Sanitation, Electric | United States | North America |
| City of Fredericksburg | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of Fredericksburg | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| CIty of Fremont | Water, Sewer, Lighting, Electric, Natural Gas | United States | North America |
| City of Fremont | Water, Sewer | United States | North America |
| City of Fresno | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City Of Fridley | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Friendswood | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City Of Frisco | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Fullerton | Water, Sewer, Sanitation | United States | North America |
| City of Gahanna | Water, Sewer, Sanitation | United States | North America |
| City of Gainesville | Water, Irrigation, Sewer, Sanitation, Electric | United States | North America |
| City of Galesburg | Water, Sewer | United States | North America |
| City of Galveston | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Garden City | Water, Sewer, Sanitation, Lighting | United States | North America |
| City of Garden City | Water, Sewer, Lighting, Sanitation, Electric | United States | North America |
| City of Garden Grove | Water, Sewer | United States | North America |
| City of Gardner | Water, Irrigation, Sewer, Electric | United States | North America |
| City of Garland | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of Gastonia | Water, Irrigation, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of Geneva | Water, Sewer, Sanitation, Electric | United States | North America |
| City of Gentry | Water, Sewer, Sanitation | United States | North America |
| City of Georgetown | Water, Irrigation, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of Georgetown | Water, Irrigation, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of Germantown | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Gillette | Water, Sewer, Sanitation, Electric | United States | North America |
| City Of Gladstone | Water, Sewer, Sanitation, Electric | United States | North America |
| City Of Gladstone | Water, Sewer | United States | North America |
| City of Glendale | Water, Sewer, Sanitation, Electric | United States | North America |
| City of Glendale | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Glendora | Water, Electric | United States | North America |
| City of Glenwood Springs | Water, Irrigation, Sewer, Sanitation, Electric | United States | North America |
| City of Goddard | Water, Irrigation, Sewer | United States | North America |
| City of Golden | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Golden Valley | Water, Irrigation, Sewer, Lighting, Sanitation | United States | North America |
| City of Goldsboro | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Gonzales | Water, Sewer, Sanitation, Natural Gas | United States | North America |
| City of Gonzales | Water, Electric | United States | North America |
| City of Goodland | Water, Sewer, Lighting, Sanitation, Electric | United States | North America |
| City of Goodlettsville | Water, Sewer | United States | North America |
| City of Goodyear | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Gothenburg | Electric | United States | North America |
| City of Graham | Water, Sewer, Sanitation | United States | North America |
| City of Granbury | Water, Sewer, Electric | United States | North America |
| City of Grand Forks | Water, Sewer, Sanitation | United States | North America |
| City of Grand Island | Water, Sewer, Lighting, Electric | United States | North America |
| City of Grand Junction | Water, Sewer, Sanitation | United States | North America |
| City of Grand Prairie | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Grand Rapids Water System | Water, Irrigation, Sewer | United States | North America |
| City Of Grandville | Water, Irrigation, Sewer | United States | North America |
| City of Grants Pass | Water, Sewer | United States | North America |
| City of Grapevine | Water, Sewer, Sanitation | United States | North America |
| City of Grass Valley | Water, Sewer | United States | North America |
| City of Great Falls | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Greeley | Water, Irrigation, Sewer | United States | North America |
| City of Greenfield | Water, Natural Gas | United States | North America |
| City of Greenfield | Sewer, Electric | United States | North America |
| City of Greensboro | Water, Sewer, Sanitation | United States | North America |
| City of Greenville | Water, Irrigation, Telecom, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of Greenville | Water, Sewer, Sanitation | United States | North America |
| City of Greenville | Water, Sewer | United States | North America |
| City of Greenwood | Water, Sewer, Sanitation | United States | North America |
| City of Grenada | Water, Sewer, Sanitation | United States | North America |
| City Of Gresham | Water, Irrigation, Sewer | United States | North America |
| City of Griffin | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of Grimes | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Grove City | Water, Sewer, Sanitation, Electric | United States | North America |
| City Of Groveland | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Grover Beach | Water, Sewer, Sanitation | United States | North America |
| City of Gulf Breeze | Water, Sewer, Sanitation, Electric, Natural Gas | United States | North America |
| City Of Hackberry | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Hagerstown | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of Haines City Utilities | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Haltom City | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Hamilton | Water, Sewer, Sanitation, Lighting, Electric, Natural Gas | United States | North America |
| City of Hammond | Water, Sewer, Sanitation | United States | North America |
| City of Hamtramck | Water, Sewer, Sanitation | United States | North America |
| City Of Hanford | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Harrisburg | Water, Sewer | United States | North America |
| City of Harrison | Water, Sewer, Sanitation | United States | North America |
| City of Harrisonburg | Water, Sewer, Sanitation | United States | North America |
| City of Harrisonville | Water, Sewer, Sanitation, Electric | United States | North America |
| City Of Harrodsburg | Water, Sewer, Sanitation | United States | North America |
| City of Hartford | Water, Sewer, Electric | United States | North America |
| City of Hartsville | Water, Sewer, Sanitation | United States | North America |
| City Of Harvey IL | Water, Sewer | United States | North America |
| City of Hastings | Water, Sewer | United States | North America |
| City of Hawley | Water, Sewer, Sanitation, Electric, Natural Gas | United States | North America |
| City of Hayward | Water, Irrigation, Sewer | United States | North America |
| City of Healdsburg | Water, Sewer, Electric | United States | North America |
| City of Heath | Water, Sewer | United States | North America |
| City of Hemet | Water, Sewer | United States | North America |
| City of Henderson | Water, Irrigation, Sewer | United States | North America |
| City of Hereford | Water, Sewer, Sanitation | United States | North America |
| City Of Hermantown | Water, Sewer | United States | North America |
| City of Hialeah | Water, Sewer, Sanitation | United States | North America |
| City of Hickory | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Hidalgo | Water, Sewer, Sanitation | United States | North America |
| City of Higginsville | Water, Sewer, Lighting, Sanitation, Electric | United States | North America |
| City of High Point | Water, Irrigation, Sewer, Lighting, Sanitation, Electric | United States | North America |
| City of High Springs | Water, Sewer, Sanitation | United States | North America |
| City Of Highland Illinois | Water, Sewer, Sanitation, Electric | United States | North America |
| City of Hillsboro | Water, Irrigation, Sewer | United States | North America |
| City Of Hitchcock | Water, Sewer, Sanitation | United States | North America |
| City of Hobbs | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Holyoke | Water, Sewer, Sanitation, Electric | United States | North America |
| City of Homestead | Water, Irrigation, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of Hot Springs | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City Of Houghton MI | Water, Sewer, Sanitation, Lighting | United States | North America |
| City of Howard Lake | Water, Sewer | United States | North America |
| City of Huber Heights | Water, Sewer | United States | North America |
| City of Hudson | Water, Sewer, Electric | United States | North America |
| City of Hugo | Water, Irrigation, Sewer | United States | North America |
| City Of Huntington | Water, Sewer | United States | North America |
| City of Huntington Beach | Water, Irrigation, Sewer, Sanitation, Fuel Oil | United States | North America |
| City of Huntington Park | Water, Sewer | United States | North America |
| City of Huntsville | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Huron | Water, Sewer, Sanitation | United States | North America |
| City of Hurst | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Hutchinson | Water, Sewer, Electric, Natural Gas | United States | North America |
| City of Hutchinson | Water, Sewer, Sanitation | United States | North America |
| City of Idaho Falls | Water, Irrigation, Sewer, Lighting, Sanitation, Electric | United States | North America |
| City of Imperial | Water, Sewer, Sanitation, Electric | United States | North America |
| City of Independence | Water, Irrigation, Sewer, Lighting, Electric | United States | North America |
| City of Independence | Water, Sewer, Sanitation | United States | North America |
| City of Indianola | Water, Sewer, Electric | United States | North America |
| City of Inglewood | Water, Sewer, Sanitation | United States | North America |
| City of Iola | Water, Sewer, Electric, Natural Gas | United States | North America |
| City of Iowa City | Water, Sewer | United States | North America |
| City of Ironton | Water, Sewer | United States | North America |
| City of Irving | Water, Sewer, Sanitation | United States | North America |
| City of Jacinto City | Water, Sewer, Sanitation | United States | North America |
| City of Jackson | Water, Irrigation, Sewer | United States | North America |
| City of Jackson | Water, Sewer, Sanitation, Electric | United States | North America |
| City of Jackson | Water, Sewer, Sanitation | United States | North America |
| City Of Jamestown | Water, Sewer, Natural Gas | United States | North America |
| City of Jamestown | Water, Sewer, Sanitation, Lighting, Electric, Chilled Water, Natural Gas | United States | North America |
| City of Jasper | Water, Sewer, Lighting, Electric, Natural Gas | United States | North America |
| City Of Jennings | Water, Sewer | United States | North America |
| City of Jersey Village | Water, Irrigation, Sewer | United States | North America |
| City of Johannesburg | Water, Sewer, Sanitation, Electric | South Africa | Africa |
| City of Johnston | Water, Sewer | United States | North America |
| City of Joliet | Water, Sewer, Sanitation | United States | North America |
| City of Joplin | Water, Sewer, Sanitation | United States | North America |
| City of Kalamazoo | Water, Sewer | United States | North America |
| City of Kamloops | Water, Sewer, Sanitation | Canada | North America |
| City of Kannapolis | Water, Sewer, Sanitation | United States | North America |
| City of Katy | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Kaufman | Water, Sewer, Sanitation | United States | North America |
| City of Kearney | Water, Sewer, Sanitation | United States | North America |
| City of Kennedale | Water, Sewer | United States | North America |
| City Of Kennesaw | Irrigation, Sewer, Lighting, Sanitation | United States | North America |
| City of Kent | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Kenton | Water, Sewer | United States | North America |
| City of Kerman | Water, Sewer, Sanitation | United States | North America |
| City of Kerrville | Water, Irrigation, Sewer | United States | North America |
| City of Kilgore | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Killeen | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Kingman | Water, Sewer, Lighting, Electric | United States | North America |
| City of Kingsford | Water, Sewer, Sanitation | United States | North America |
| City of Kingsport Water | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Kingsville | Water, Irrigation, Sewer, Sanitation, Lighting | United States | North America |
| City of Kirkland | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City Of Kirksville | Water, Irrigation, Sewer | United States | North America |
| City of Kirkwood | Water, Lighting, Electric | United States | North America |
| City of Klamath Falls | Water, Sewer, Electric | United States | North America |
| City of Kokomo | Water, Sewer | United States | North America |
| City of Kosciusko | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of Kuna | Water, Sewer, Sanitation | United States | North America |
| City of Kyle | Water, Irrigation, Sewer | United States | North America |
| City of La Crosse | Water, Irrigation, Sewer | United States | North America |
| City Of La Habra | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of La Junta | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of La Porte | Water, Irrigation, Sewer | United States | North America |
| City of Lacey | Water, Irrigation, Sewer | United States | North America |
| City of LaFayette | Water, Sewer, Sanitation, Lighting, Electric, Natural Gas | United States | North America |
| City of Lafayette | Water, Sewer, Sanitation, Natural Gas | United States | North America |
| City of Lafayette | Water, Irrigation, Sewer | United States | North America |
| City of LaGrange | Water, Landline Phone, Sewer, Television, Lighting, Sanitation, Electric, Internet, Natural Gas | United States | North America |
| City of Lake Alfred | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Lake Charles | Water, Irrigation, Sewer | United States | North America |
| City of Lake City | Water, Irrigation, Sewer, Sanitation, Natural Gas | United States | North America |
| City of Lake Mills | Water, Sewer, Sanitation, Electric | United States | North America |
| City of Lake Oswego | Water, Sewer | United States | North America |
| City of Lakeport | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City Of Lakeville | Water, Irrigation, Sewer, Lighting | United States | North America |
| City of Lakewood | Water, Irrigation, Sewer | United States | North America |
| City of Lakewood Utilities | Water, Sewer | United States | North America |
| City of Lamar | Water, Sewer, Lighting, Sanitation, Electric | United States | North America |
| City of Lancaster | Water, Sewer, Sanitation | United States | North America |
| City of Lancaster | Water, Sewer, Sanitation | United States | North America |
| City of Lancaster | Water, Sewer, Sanitation, Natural Gas | United States | North America |
| City of Langley | Water, Sewer | Canada | North America |
| City of Laramie | Water, Sewer, Sanitation | United States | North America |
| City of Laredo | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Las Cruces | Water, Irrigation, Sewer, Sanitation, Natural Gas | United States | North America |
| City of Las Vegas | Water, Sewer | United States | North America |
| City of Las Vegas | Water, Sewer, Sanitation, Natural Gas | United States | North America |
| City of Lathrop Water System | Water, Irrigation, Sewer | United States | North America |
| City of Latrobe | Water, Sewer, Sanitation | United States | North America |
| City of Lauderhill | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Lawrence | Water, Sewer | United States | North America |
| City of Lawrence | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Lawrence Utilities | Water, Sewer, Sanitation | United States | North America |
| City of Lawrenceville | Water, Sewer, Sanitation, Electric, Natural Gas | United States | North America |
| City of League City | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Lebanon | Water, Irrigation, Sewer, Sanitation, Lighting, Electric, Natural Gas | United States | North America |
| City of Lebanon | Water, Sewer, Lighting, Electric | United States | North America |
| City of Lebanon | Water, Sewer, Sanitation, Electric | United States | North America |
| City of Lebanon Utilities | Water, Sewer, Sanitation, Lighting, Electric, Natural Gas | United States | North America |
| City of Lee's Summit | Water, Irrigation, Sewer, Natural Gas | United States | North America |
| City of Leesburg | Water, Irrigation, Sewer, Sanitation, Lighting, Electric, Natural Gas | United States | North America |
| City of Leon Valley | Water, Irrigation, Sewer | United States | North America |
| City of Lethbridge | Water, Sewer, Sanitation, Electric, Natural Gas | Canada | North America |
| City of Lewisville | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Lexington | Water, Irrigation, Sewer, Lighting, Sanitation, Electric, Natural Gas | United States | North America |
| City of Liberty | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of Lima | Water, Sewer, Sanitation | United States | North America |
| City of Lincoln | Water, Sewer | United States | North America |
| City of Lincoln | Water, Sewer, Sanitation | United States | North America |
| City of Lincolnton | Water, Irrigation, Sewer, Electric | United States | North America |
| City of Lino Lakes | Water, Sewer | United States | North America |
| City of Litchfield | Water, Sewer, Electric | United States | North America |
| City of Littleton | Water, Sewer | United States | North America |
| City of Live Oak | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Livermore | Water, Irrigation, Sewer | United States | North America |
| City of Livingston | Water, Sewer, Lighting, Sanitation, Electric | United States | North America |
| City Of Livonia MI | Water, Sewer | United States | North America |
| City of Lockport | Water, Sewer, Sanitation | United States | North America |
| City of Lockwood | Water, Sewer, Sanitation, Electric | United States | North America |
| City of Lodi | Water, Sewer, Sanitation, Electric | United States | North America |
| City of Logan | Water, Sewer, Sanitation, Electric | United States | North America |
| City of Loganville | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Lompoc | Water, Sewer, Sanitation, Electric | United States | North America |
| City of Long Beach | Water, Sewer, Sanitation, Natural Gas | United States | North America |
| City of Longmont | Water, Irrigation, Sewer, Sanitation, Electric | United States | North America |
| City of Longview | Water, Sewer, Sanitation | United States | North America |
| City of Lorain | Water, Sewer, Sanitation | United States | North America |
| City of Los Banos | Water, Sewer, Sanitation | United States | North America |
| City of Loveland | Water, Sewer, Sanitation | United States | North America |
| City of Loveland | Water, Irrigation, Sewer, Sanitation, Electric | United States | North America |
| City of Lubbock Utilities | Water, Irrigation, Sewer, Sanitation, Electric | United States | North America |
| City of Lufkin | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City Of Luverne | Water, Sewer, Lighting, Electric | United States | North America |
| City of Lynchburg | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Lyons | Water, Sewer, Natural Gas | United States | North America |
| City of Madison | Water, Sewer, Sanitation | United States | North America |
| City of Madison | Natural Gas | United States | North America |
| City of Madison | Water, Irrigation, Sewer | United States | North America |
| City Of Madison Heights | Water, Irrigation, Sewer, Other Service Type | United States | North America |
| City of Maitland | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Mandan | Water, Sewer, Sanitation, Lighting | United States | North America |
| City of Manhattan | Water, Irrigation, Sewer | United States | North America |
| City of Manhattan Beach Water and Sewer | Water, Sewer, Sanitation | United States | North America |
| City of Mankato | Water, Irrigation, Sewer, Sanitation, Lighting | United States | North America |
| City of Mansfield | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City Of Mansfield | Water, Sewer | United States | North America |
| City of Manteca | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Maple Grove | Water, Irrigation, Sewer, Lighting, Sanitation, Electric | United States | North America |
| City of Margate | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Marianna | Water, Irrigation, Sewer, Sanitation, Natural Gas | United States | North America |
| City of Marinette Water Utility | Water, Sewer | United States | North America |
| City of Marion | Water, Sewer, Sanitation | United States | North America |
| City of Marion | Water, Sewer | United States | North America |
| City of Marion Water Department | Water, Sewer | United States | North America |
| City Of Marshfield | Water, Sewer | United States | North America |
| City of Martinsville | Water, Sewer, Sanitation, Electric | United States | North America |
| City Of Marysville | Water, Sewer | United States | North America |
| City Of Marysville | Water, Sewer | United States | North America |
| City of Marysville | Water, Irrigation, Sewer, Sanitation, Electric | United States | North America |
| City of Maryville | Water, Irrigation, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of Mason City | Water, Sewer, Sanitation | United States | North America |
| City of Maui | Water, Sewer | United States | North America |
| City of Maumee | Water, Sewer | United States | North America |
| City Of Mayville Utilities Dept | Water, Sewer | United States | North America |
| City of McKinney | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Mebane | Water, Sewer, Sanitation | United States | North America |
| City of Medford | Water, Irrigation, Sewer, Lighting, Sanitation | United States | North America |
| City of Medicine Hat | Water, Irrigation, Sewer, Sanitation, Electric, Natural Gas | Canada | North America |
| City of Medina | Water, Sewer | United States | North America |
| City of Melbourne | Water, Sewer, Sanitation | United States | North America |
| City of Melrose | Electric | United States | North America |
| City of Menasha | Water, Sewer, Lighting, Electric | United States | North America |
| City of Menlo Park | Water, Irrigation | United States | North America |
| City Of Menomonie | Water, Sewer, Lighting, Sanitation | United States | North America |
| City of Merced | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Meridian | Water, Sewer, Sanitation | United States | North America |
| City of Meridian | Water, Sewer, Sanitation | United States | North America |
| City of Merritt | Water, Sewer, Sanitation | Canada | North America |
| City Of Mesa | Water, Irrigation, Sewer, Sanitation, Lighting, Electric, Natural Gas | United States | North America |
| City of Mesquite | Water, Sewer, Sanitation | United States | North America |
| City of Methuen | Water, Irrigation, Sewer | United States | North America |
| City of Middleton | Water, Sewer | United States | North America |
| City of Middletown | Water, Sewer | United States | North America |
| City of Middletown Water | Water, Sewer, Sanitation | United States | North America |
| City of Midland | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Midland | Water, Irrigation, Sewer, Lighting, Electric | United States | North America |
| City of Midwest City | Water, Irrigation, Sewer, Sanitation, Lighting | United States | North America |
| City of Milford | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of Milledgeville | Water, Sewer, Sanitation | United States | North America |
| City of Milpitas | Water, Irrigation, Sewer | United States | North America |
| City of Milwaukee | Water, Irrigation, Sewer, Lighting, Sanitation | United States | North America |
| City of Minden | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of Minneapolis | Water, Sewer, Sanitation | United States | North America |
| City of Minnetonka | Water, Irrigation, Sewer, Sanitation, Lighting | United States | North America |
| City of Minot | Water, Irrigation, Sewer | United States | North America |
| City of Miramar | Water, Sewer, Sanitation | United States | North America |
| City of Mishawaka | Water, Irrigation, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of Mission | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Missoula | Water, Irrigation, Sewer | United States | North America |
| City of Mitchell | Electric | United States | North America |
| City of Modesto | Water, Sewer, Sanitation | United States | North America |
| City of Moline | Water, Sewer, Sanitation | United States | North America |
| City of Moncton | Water, Sewer | Canada | North America |
| City of Monett | Water, Sewer, Electric | United States | North America |
| City of Monroe | Water, Irrigation, Sewer, Sanitation, Lighting, Electric, Natural Gas | United States | North America |
| City of Monroe | Water, Sewer, Sanitation | United States | North America |
| City of Monroe | Water, Sewer, Sanitation | United States | North America |
| City of Monroe | Water, Sewer, Sanitation, Lighting | United States | North America |
| City of Monrovia Utilities | Water, Sewer, Sanitation | United States | North America |
| City of Mont Belvieu | Water, Sewer, Sanitation, Internet | United States | North America |
| City of Montclair | Sewer, Sanitation | United States | North America |
| City of Montclair | Water, Sewer | United States | North America |
| City of Monterey Park | Water, Sewer, Sanitation | United States | North America |
| City of Moore | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Moorhead | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of Moreno Valley | Electric | United States | North America |
| City Of Morgan City | Water, Sewer, Sanitation, Electric, Natural Gas | United States | North America |
| City of Morgan Hill | Water, Sewer | United States | North America |
| City of Morganton | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City Of Morrilton | Water, Sewer | United States | North America |
| City of Mount Airy | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Mount Vernon | Water, Sewer | United States | North America |
| City of Mountain Home | Water, Sewer | United States | North America |
| City of Mountain View | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Mountlake Terrace | Water, Irrigation, Sewer | United States | North America |
| City of Mulvane | Electric | United States | North America |
| City of Murfreesboro | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Murray City | Water, Sewer, Sanitation, Electric | United States | North America |
| City of Myrtle Beach | Water, Sewer, Sanitation | United States | North America |
| City of Nacogdoches | Water, Sewer, Sanitation | United States | North America |
| City of Nampa | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City Of Napa CA | Water, Irrigation | United States | North America |
| City of Naperville | Water, Irrigation, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of Napoleon | Water, Sewer, Sanitation, Electric | United States | North America |
| City of Nassau Bay | Water, Sewer | United States | North America |
| City of Natchitoches | Water, Irrigation, Sewer, Lighting, Sanitation, Electric | United States | North America |
| City of Negaunee | Water, Sewer, Electric | United States | North America |
| City of Nevada | Water, Sewer | United States | North America |
| City of New Bern | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of New Braunfels | Water, Irrigation, Sewer, Lighting, Sanitation, Electric | United States | North America |
| City of New Brighton | Water, Irrigation, Sewer, Sanitation, Lighting | United States | North America |
| City of New Britain | Water, Sewer | United States | North America |
| City of New Castle | Water, Irrigation, Sewer | United States | North America |
| City of New Castle | Water, Sewer, Sanitation | United States | North America |
| City Of New Lisbon Municipal Electric And Water Dept | Water, Sewer, Electric | United States | North America |
| City of New London | Water, Sewer, Electric | United States | North America |
| City Of New Port Richey | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of New Westminster | Water, Sewer, Sanitation, Electric | Canada | North America |
| City of Newark | Water, Sewer | United States | North America |
| City of Newark | Water, Sewer, Lighting, Electric | United States | North America |
| City Of Newark NJ Water | Water, Sewer | United States | North America |
| City of Newberg | Water, Irrigation, Sewer | United States | North America |
| City of Newport | Water, Sewer, Lighting, Electric | United States | North America |
| City of Newport Beach | Water, Sewer, Sanitation | United States | North America |
| City of Newton | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of Newton | Water, Sewer | United States | North America |
| City of Niagara Falls | Water, Sewer | Canada | North America |
| City of Niles | Water, Sewer, Lighting, Electric | United States | North America |
| City of Niles | Water, Sewer, Electric | United States | North America |
| City of Noblesville | Sewer, Sanitation | United States | North America |
| City Of Norco | Water, Irrigation, Sewer | United States | North America |
| City of Norman | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of North Bay | Water, Sewer, Electric | Canada | North America |
| City of North Canton | Water, Sewer, Sanitation | United States | North America |
| City of North Las Vegas | Water, Sewer, Sanitation | United States | North America |
| City Of North Miami | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of North Miami Beach | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of North Myrtle Beach | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City Of North St Paul | Water, Sewer, Lighting, Sanitation, Electric | United States | North America |
| City of North Vancouver | Water, Sewer, Electric | Canada | North America |
| City of Northfield | Water, Sewer | United States | North America |
| City of Northglenn | Water, Sewer, Sanitation | United States | North America |
| City of Northport | Water, Sewer | United States | North America |
| City of Norwalk | Water, Sewer | United States | North America |
| City of Norwich | Water, Sewer, Electric, Natural Gas | United States | North America |
| City of Novi | Water, Sewer | United States | North America |
| City of O'Fallon | Water, Irrigation, Sewer | United States | North America |
| City of Oak Creek | Water, Sewer, Electric | United States | North America |
| City Of Oak Forest | Water, Sewer | United States | North America |
| City of Oak Park | Water, Sewer, Sanitation | United States | North America |
| City of Oak Park Heights | Water, Sewer | United States | North America |
| City of Oakdale | Water, Irrigation, Sewer | United States | North America |
| City of Oakland Park | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Oakridge | Water, Irrigation, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of Oberlin | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of Ocala | Water, Telecom, Irrigation, Sewer, Lighting, Sanitation, Electric, Internet | United States | North America |
| City of Oceanside | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Ocoee | Water, Irrigation, Sewer | United States | North America |
| City of Oconomowoc | Water, Irrigation, Sewer, Electric | United States | North America |
| City of Odessa | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Oklahoma City | Water, Irrigation, Sewer, Sanitation, Electric | United States | North America |
| City of Olathe | Water, Sewer, Sanitation | United States | North America |
| City of Oldsmar | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Olean | Water, Sewer | United States | North America |
| City of Olive Hill | Electric | United States | North America |
| City of Olympia | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Onalaska | Water, Irrigation, Sewer | United States | North America |
| City of Orange | Water, Sewer, Sanitation | United States | North America |
| City of Orange City | Water, Irrigation, Sewer | United States | North America |
| City Of Orange Cove | Water, Sewer, Sanitation | United States | North America |
| City of Orangeburg | Water, Sewer, Lighting, Sanitation, Electric, Natural Gas | United States | North America |
| City of Oregon | Water, Sewer | United States | North America |
| City of Orem | Water, Irrigation, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of Orono | Water, Sewer | United States | North America |
| City Of Osage Beach | Water, Sewer | United States | North America |
| City of Oshkosh | Water, Sewer | United States | North America |
| City Of Otsego | Water, Irrigation, Sewer | United States | North America |
| City of Ottawa | Water, Sewer, Sanitation, Electric | Canada | North America |
| City of Oviedo | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Owasso Utility Billing Department | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Oxford | Water, Sewer, Sanitation | United States | North America |
| City of Oxnard | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Palo Alto | Water, Telecom, Sewer, Sanitation, Electric, Natural Gas | United States | North America |
| City of Paris | Water, Sewer, Electric | United States | North America |
| City of Park Ridge | Water, Sewer | United States | North America |
| City Of Pasadena | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Pasadena | Water, Sewer, Sanitation, Electric | United States | North America |
| City of Pataskala | Water, Sewer | United States | North America |
| City of Patterson | Water, Sewer, Sanitation | United States | North America |
| City of Peachtree | Irrigation | United States | North America |
| City of Pearland | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Pella | Water, Sewer, Electric | United States | North America |
| City Of Pendleton OR | Water, Sewer, Lighting | United States | North America |
| City of Penticton | Water, Sewer, Electric | Canada | North America |
| City of Peoria | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Peoria | Sewer | United States | North America |
| City of Perham | Water, Irrigation, Sewer, Natural Gas | United States | North America |
| City of Petaluma | Water, Irrigation, Sewer | United States | North America |
| City of Petoskey | Water, Irrigation, Sewer, Lighting, Electric | United States | North America |
| City of Pewaukee | Water, Sewer | United States | North America |
| City of Pflugerville | Water, Sewer, Sanitation | United States | North America |
| City of Pharr | Water, Sewer, Sanitation | United States | North America |
| City of Phenix City | Water, Sewer, Sanitation | United States | North America |
| City of Philadelphia Water | Water, Irrigation, Sewer, Natural Gas | United States | North America |
| City of Phoenix | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Pickerington | Water, Sewer | United States | North America |
| City of Pinellas Park Public Utilities | Water, Sewer, Sanitation | United States | North America |
| City of Pittsburg | Water, Sewer | United States | North America |
| City of Plainview | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Plano | Water, Irrigation, Sewer, Sanitation, Chilled Water | United States | North America |
| City of Plaquemine | Water, Sewer, Electric, Natural Gas | United States | North America |
| City of Plattsburgh | Water, Sewer, Electric | United States | North America |
| City of Pleasanton | Water, Irrigation, Sewer | United States | North America |
| City of Plymouth | Water, Sewer | United States | North America |
| City of Plymouth | Water, Irrigation, Sewer, Sanitation, Lighting | United States | North America |
| City of Pocatello | Water, Sewer, Sanitation | United States | North America |
| City of Pomona | Water, Sewer, Sanitation | United States | North America |
| City of Pompano Beach | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Ponca City | Water, Sewer, Sanitation, Lighting, Electric, Internet | United States | North America |
| City of Pooler | Water, Sewer, Sanitation | United States | North America |
| City of Port Arthur | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Port Hueneme | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Port Orchard | Water, Irrigation, Sewer | United States | North America |
| City of Port St. Lucie | Water, Irrigation, Sewer | United States | North America |
| City of Portland | Water, Irrigation, Sewer | United States | North America |
| City of Portsmouth | Water, Sewer, Sanitation | United States | North America |
| City of Portsmouth Public Utilities | Water, Sewer, Sanitation | United States | North America |
| City of Poway | Water, Sewer | United States | North America |
| City of Pratt | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City Of Prescott | Water, Sewer, Sanitation, Lighting | United States | North America |
| City of Prichard Water And Sewer Board | Water, Sewer | United States | North America |
| City of Prince George | Water, Sewer, Sanitation | Canada | North America |
| City of Prineville | Water, Sewer | United States | North America |
| City of Prior Lake | Water, Sewer | United States | North America |
| City of Provo | Water, Irrigation, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of Punta Gorda | Water, Sewer, Sanitation | United States | North America |
| City Of Puyallup | Water, Sewer, Sanitation | United States | North America |
| City of Quincy | Water, Sewer, Lighting, Sanitation, Electric, Natural Gas | United States | North America |
| City of Quincy | Water, Sewer | United States | North America |
| City of Raleigh | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Rancho Cucamonga Municipal Utility (RCMU) | Electric | United States | North America |
| City of Randleman | Water, Sewer, Sanitation | United States | North America |
| City of Ravenna | Water, Sewer, Sanitation | United States | North America |
| City of Raytown | Sewer | United States | North America |
| City of Red Deer | Water, Sewer, Sanitation, Electric, Natural Gas | Canada | North America |
| City of Redding | Water, Sewer, Sanitation, Electric | United States | North America |
| City of Redlands | Water, Sewer, Sanitation | United States | North America |
| City of Redmond | Water, Irrigation, Sewer | United States | North America |
| City of Redwood City | Water, Sewer, Sanitation | United States | North America |
| City of Reedley | Water, Sewer, Sanitation | United States | North America |
| City of Regina | Water, Sewer, Sanitation | Canada | North America |
| City of Reno | Water, Sewer | United States | North America |
| City of Rensselaer | Water, Sewer, Lighting, Sanitation, Electric, Natural Gas | United States | North America |
| City of Renton | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City Of Rhinelander | Water, Sewer | United States | North America |
| City of Rich Hill | Water, Sewer, Sanitation, Electric | United States | North America |
| City of Richardson | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Richland | Water, Irrigation, Landline Phone, Sewer, Television, Other Service Type, Sanitation, Lighting, Electric | United States | North America |
| City of Richland Hills | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Richmond | Water, Irrigation, Sewer, Sanitation, Natural Gas | United States | North America |
| City of Richmond | Water, Sewer, Natural Gas | Canada | North America |
| City of Richmond | Sewer, Sanitation | United States | North America |
| City of Richmond Hill | Water, Sewer | United States | North America |
| City of Richmond Water Department | Water, Sewer, Sanitation | United States | North America |
| City of Rio Grande City | Water, Sewer, Sanitation | United States | North America |
| City of Rio Rancho | Water, Irrigation, Sewer | United States | North America |
| City of Ripon | Water, Sewer | United States | North America |
| City of Riverside Public Utilities | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of Riviera Beach | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Rochester Hills | Water, Sewer | United States | North America |
| City of Rock Falls | Water, Sewer, Lighting, Electric | United States | North America |
| City of Rock Hill | Water, Irrigation, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of Rock Island | Water, Sewer, Sanitation | United States | North America |
| City of Rockmart | Water, Sewer, Sanitation | United States | North America |
| City of Rockville | Water, Sewer | United States | North America |
| City of Rockwall | Water, Sewer, Sanitation | United States | North America |
| City of Rogers | Water, Irrigation, Sewer | United States | North America |
| City of Rohnert Park | Water, Sewer | United States | North America |
| City of Rollingwood | Water, Irrigation, Sewer | United States | North America |
| City Of Rome | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Romulus | Water, Sewer, Sanitation | United States | North America |
| City Of Rosemount | Water, Sewer, Lighting | United States | North America |
| City of Rosenberg | Water, Sewer, Sanitation | United States | North America |
| City of Roseville | Water, Irrigation, Sewer, Lighting, Sanitation, Electric | United States | North America |
| City of Roseville | Water, Irrigation, Sewer, Sanitation, Electric | United States | North America |
| City of Roswell | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Roswell | Water, Sewer, Sanitation | United States | North America |
| City of Round Rock | Water, Sewer, Sanitation | United States | North America |
| City Of Rowlett | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Rox Boro | Water, Sewer, Sanitation | United States | North America |
| City of Sachse | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Sacramento | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Safety Harbor | Water, Sewer, Sanitation | United States | North America |
| City of Saginaw | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Saint Charles | Water, Sewer | United States | North America |
| City Of Saint Peter | Water, Sewer, Sanitation, Electric | United States | North America |
| City of Saint Peters | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Salem | Water, Irrigation, Sewer, Lighting, Electric | United States | North America |
| City of Salem | Water, Sewer, Sanitation, Electric | United States | North America |
| City of Salem | Water, Sewer | United States | North America |
| City of Salida | Water, Sewer | United States | North America |
| City of Salina | Water, Sewer, Sanitation | United States | North America |
| City of Salisbury | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of San Angelo | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of San Bernardino | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of San Bruno | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of San Clemente | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of San Diego | Water, Irrigation, Sewer | United States | North America |
| City of San Jose | Water, Irrigation, Sanitation | United States | North America |
| City of San Juan | Water, Sewer, Sanitation | United States | North America |
| City Of San Juan Capistrano | Water, Sewer | United States | North America |
| City of San Luis Obispo | Water, Sewer | United States | North America |
| City of San Marcos | Water, Irrigation, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City Of Sandusky | Water, Sewer | United States | North America |
| City of Sandwich | Water, Sewer | United States | North America |
| City of Sanford | Water, Sewer | United States | North America |
| City of Santa Ana | Water, Sewer, Sanitation, Electric | United States | North America |
| City of Santa Barbara | Water, Irrigation, Sewer, Sanitation, Electric | United States | North America |
| City of Santa Clara | Water, Sewer, Sanitation, Electric | United States | North America |
| City of Santa Cruz | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Santa Fe | Water, Sewer, Sanitation | United States | North America |
| City of Santa Maria | Water, Sewer, Sanitation | United States | North America |
| City of Santa Monica | Water, Sewer, Sanitation | United States | North America |
| City of Santa Rosa | Water, Irrigation, Sewer | United States | North America |
| City of Saratoga Springs | Water, Irrigation, Sewer | United States | North America |
| City of Saskatoon | Water, Sewer, Sanitation, Electric | Canada | North America |
| City of Sault Ste Marie | Water, Sewer | United States | North America |
| City of Savage | Water, Irrigation, Sewer, Lighting | United States | North America |
| City of Schertz | Water, Sewer, Sanitation | United States | North America |
| City of Scott City | Water, Sewer | United States | North America |
| City of Scottsbluff | Water, Sewer, Sanitation | United States | North America |
| City of Scottsdale | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Seabrook | Water, Sewer, Sanitation | United States | North America |
| City of Seal Beach | Water, Sewer | United States | North America |
| City of Seattle | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of Sebastopol | Water, Sewer | United States | North America |
| City Of Sebring | Water, Sewer, Sanitation | United States | North America |
| City of Seguin | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of Seneca | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City Of Sevierville | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Seward | Water, Sewer, Electric | United States | North America |
| City of Seymour | Water, Sewer | United States | North America |
| City of Shafter | Water, Sewer, Sanitation | United States | North America |
| City of Shawnee | Water, Sewer | United States | North America |
| City of Sheboygan | Water, Sewer, Electric | United States | North America |
| City of Sheffield Lake | Water, Sewer | United States | North America |
| City of Shelby | Water, Irrigation, Sewer, Sanitation, Lighting, Electric, Natural Gas | United States | North America |
| City of Sherman | Water, Sewer, Sanitation, Electric, Natural Gas | United States | North America |
| City of Sherwood | Water, Irrigation, Sewer, Lighting, Internet | United States | North America |
| City Of Shreveport | Water, Sewer, Sanitation | United States | North America |
| City of Sidney | Water, Irrigation, Sewer | United States | North America |
| City of Siloam Springs | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of Simi Valley | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Sioux City | Water, Sewer | United States | North America |
| City of Slidell | Water, Irrigation, Sewer | United States | North America |
| City of Smyrna | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Snoqualmie | Water, Irrigation, Sewer | United States | North America |
| City of Sonoma | Water, Sanitation | United States | North America |
| City of Sopchoppy | Water, Sewer | United States | North America |
| City of South Bend | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of South Charleston Sanitary Board | Sewer, Sanitation | United States | North America |
| City of South Jordan | Water | United States | North America |
| City Of South Sioux City | Water, Sewer, Electric | United States | North America |
| City of South St. Paul | Water, Irrigation, Sewer, Lighting | United States | North America |
| City of Southfield | Water, Sewer, Lighting, Sanitation | United States | North America |
| City Of Southgate | Water, Sewer | United States | North America |
| City Of Southlake | Water, Sewer, Sanitation | United States | North America |
| City of Southport | Water, Sewer, Electric | United States | North America |
| City of Sparks Revenue | Water, Sewer | United States | North America |
| City of Spokane | Water, Sewer, Sanitation | United States | North America |
| City of Spooner | Water, Sewer, Electric | United States | North America |
| City of Spring Hill | Water, Sewer, Sanitation | United States | North America |
| City of Spring Lake Park | Water, Sewer, Sanitation, Lighting | United States | North America |
| City of Springboro Utility Department | Water, Sewer, Sanitation | United States | North America |
| City of Springfield | Water, Sewer | United States | North America |
| City of Spruce Grove | Water, Sewer | Canada | North America |
| City of St Helena | Water, Irrigation, Sewer | United States | North America |
| City of St Louis | Water, Sanitation | United States | North America |
| City of St Louis | Water, Sewer, Sanitation, Electric | United States | North America |
| City of St Marys | Water, Sewer | United States | North America |
| City of St Petersburg | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of St. Albert | Water, Sewer, Electric | Canada | North America |
| City of St. Cloud | Water, Sewer, Lighting | United States | North America |
| City of St. George | Water, Irrigation, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of St. Joseph | Water, Sewer | United States | North America |
| City of St. Louis | Water, Sanitation | United States | North America |
| City of St. Marys | Water, Electric | United States | North America |
| City Of St.Joseph | Water, Irrigation, Sewer, Lighting | United States | North America |
| City of Statesboro | Water, Irrigation, Sewer, Sanitation, Natural Gas | United States | North America |
| City of Statesville | Water, Sewer, Sanitation, Lighting, Electric, Natural Gas | United States | North America |
| City of Stephenville | Water, Sewer, Sanitation | United States | North America |
| City of Sterling | Water, Sewer, Sanitation, Electric | United States | North America |
| City of Sterling | Sewer | United States | North America |
| City of Sterling Heights | Water, Sewer, Natural Gas | United States | North America |
| City Of Steubenville | Water, Sewer, Sanitation | United States | North America |
| City of Stevens Point | Water, Irrigation, Sewer | United States | North America |
| City of Stillwater | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of Stilwell | Water, Sewer, Lighting, Electric, Natural Gas | United States | North America |
| City of Stockbridge | Water, Irrigation, Sewer | United States | North America |
| City of Stockton | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Storm Lake | Water, Sewer | United States | North America |
| City of Streetsboro | Water, Sewer | United States | North America |
| City of Stuart | Water, Sewer, Sanitation | United States | North America |
| City of Sugar Land | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Sullivan | Water, Sewer, Lighting, Electric, Natural Gas | United States | North America |
| City of Sumner | Water, Irrigation, Sewer | United States | North America |
| City of Sunnyvale | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Sunrise | Water, Irrigation, Sewer, Sanitation, Electric, Natural Gas | United States | North America |
| City of Superior | Water, Sewer, Sanitation | United States | North America |
| City of Surrey | Water, Sewer, Electric | Canada | North America |
| City of Syracuse | Water, Sewer | United States | North America |
| City of Tacoma | Water, Sewer, Lighting, Sanitation, Electric | United States | North America |
| City of Tallahassee | Water, Irrigation, Sewer, Lighting, Sanitation, Electric, Natural Gas | United States | North America |
| City of Tamarac | Water, Irrigation, Sewer | United States | North America |
| City of Tampa | Water, Irrigation, Sewer, Sanitation, Natural Gas | United States | North America |
| City of Tarpon Springs | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City Of Tehachapi | Water, Sewer, Sanitation | United States | North America |
| City of Tempe | Water, Sewer, Sanitation | United States | North America |
| City of Temple | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Temple Terrace | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Terre Haute | Water, Sewer, Sanitation | United States | North America |
| City of Texas City | Water, Sewer, Sanitation | United States | North America |
| City of Texico | Water, Sewer | United States | North America |
| City of Thomasville | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Thomasville | Water, Sewer, Sanitation, Lighting, Electric, Internet, Natural Gas | United States | North America |
| City of Thornton | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Thousand Oaks | Water, Irrigation, Sewer | United States | North America |
| City of Tigard | Water, Irrigation, Sewer | United States | North America |
| City of Tillamook | Water, Sewer | United States | North America |
| City of Titusville | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City Of Toccoa | Water, Sewer, Sanitation, Natural Gas | United States | North America |
| City of Toledo | Water, Sewer, Sanitation | United States | North America |
| City of Topeka | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Toronto | Water, Sewer, Sanitation, Electric, Natural Gas | Canada | North America |
| City of Torrance | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Torrington | Water, Sewer, Sanitation, Electric | United States | North America |
| City of Tracy | Water, Sewer, Sanitation | United States | North America |
| City of Trenton | Water, Sewer | United States | North America |
| City of Trenton | Water, Sewer, Electric | United States | North America |
| City of Troy | Water, Irrigation, Sewer | United States | North America |
| City of Troy | Water, Sewer, Lighting, Electric | United States | North America |
| City of Troy | Water, Sewer, Sanitation | United States | North America |
| City of Tshwane | Water, Sewer, Sanitation, Electric | South Africa | Africa |
| City of Tualatin | Water, Sewer | United States | North America |
| City of Tucson | Water, Irrigation, Sewer, Sanitation, Electric | United States | North America |
| City of Tukwila | Water, Sewer | United States | North America |
| City of Tulsa | Water, Irrigation, Sewer, Sanitation, Electric | United States | North America |
| City of Tuscaloosa | Water, Sewer, Sanitation | United States | North America |
| City of Tustin | Water | United States | North America |
| City of Twin Falls | Water, Sewer, Sanitation | United States | North America |
| City of Tyler | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Union | Water, Sewer, Lighting, Electric, Natural Gas | United States | North America |
| City of Universal City | Water | United States | North America |
| City of University Park | Water, Sewer, Sanitation | United States | North America |
| City of Upland | Water, Sewer, Sanitation | United States | North America |
| City of Upper Arlington | Lighting, Sanitation | United States | North America |
| City Of Urbana | Water, Sewer | United States | North America |
| City of Urbandale | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Valdosta | Water, Sewer, Sanitation | United States | North America |
| City of Vallejo | Water, Irrigation, Sewer | United States | North America |
| City of Vanceburg | Water, Sewer, Electric | United States | North America |
| City of Vancouver | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of Vancouver | Water, Sewer, Sanitation | Canada | North America |
| City of Ventura | Water, Irrigation, Sewer | United States | North America |
| City of Vernon | Water, Sewer, Sanitation | Canada | North America |
| City of Vernon | Water, Sewer, Lighting, Sanitation, Electric, Natural Gas | United States | North America |
| City of Victoria | Water, Sewer, Sanitation | Canada | North America |
| City of Victoria | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Vienna | Water | United States | North America |
| City of Vineland | Water, Sanitation, Lighting, Electric | United States | North America |
| City of Virginia Beach | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Visalia | Water, Sewer, Sanitation | United States | North America |
| City Of Waconia | Water, Sewer, Lighting | United States | North America |
| City of Wadsworth | Water, Sewer, Lighting, Sanitation, Electric, Internet | United States | North America |
| City of Walhalla | Water, Sewer, Sanitation | United States | North America |
| City Of Walker | Water, Sewer, Natural Gas | United States | North America |
| City Of Walterboro | Water, Irrigation, Sewer | United States | North America |
| City of Waltham | Water, Sewer, Sanitation | United States | North America |
| City of Wapakoneta | Water, Sewer, Lighting, Electric | United States | North America |
| City of Warner Robins | Water, Sewer, Sanitation, Natural Gas | United States | North America |
| City of Warsaw | Water, Sewer | United States | North America |
| City Of Waseca | Water, Irrigation, Sewer, Lighting, Electric | United States | North America |
| City of Washington | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of Washington | Water, Irrigation, Sewer | United States | North America |
| City of Washington | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of Watauga | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Waterloo | Water, Sewer | Canada | North America |
| City of Watertown | Water, Sewer | United States | North America |
| City of Watford City | Water, Sewer, Sanitation | United States | North America |
| City of Watsonville | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City Of Wauchula | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City Of Waukegan Water Department | Water, Sewer | United States | North America |
| City Of Waupaca | Water | United States | North America |
| City of Wauwatosa | Water, Sewer | United States | North America |
| City of Waxahachie | Water, Sewer, Sanitation | United States | North America |
| City of Waycross | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Weatherford | Water, Sewer, Sanitation, Electric | United States | North America |
| City of Webb City | Water, Sewer | United States | North America |
| City of Wentzville | Water, Sewer, Sanitation | United States | North America |
| City of West Allis | Water, Sewer, Sanitation | United States | North America |
| City of West Bend | Water, Sewer | United States | North America |
| City of West Fargo | Water, Sewer, Sanitation | United States | North America |
| City of West Jordan | Water, Irrigation, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of West Kelowna | Water, Sewer | Canada | North America |
| City of West Lafayette | Water, Sewer, Sanitation | United States | North America |
| City of West Linn | Water, Sewer | United States | North America |
| City of West Palm Beach Public Utilities | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of West Point | Electric | United States | North America |
| City of Westerville Electric Division | Water, Sewer, Lighting, Electric | United States | North America |
| City of Westland | Water, Sewer, Sanitation | United States | North America |
| City of Westminister | Water, Sewer | United States | North America |
| City of Westminster | Water, Irrigation, Sewer | United States | North America |
| City of Westwego | Water, Sewer, Sanitation | United States | North America |
| City Of Westworth Village | Water | United States | North America |
| City Of Wheeling | Water, Sewer | United States | North America |
| City Of White Bear Lake | Water, Irrigation, Sewer | United States | North America |
| City of White Settlement | Water, Sewer, Sanitation | United States | North America |
| City of Whiteville | Water, Sewer, Sanitation | United States | North America |
| City Of Whitewater | Water, Sewer, Electric | United States | North America |
| City of Wichita | Water, Irrigation, Sewer | United States | North America |
| City of Wichita Falls | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Willard | Water, Sewer, Sanitation | United States | North America |
| City of Williamsburg | Water, Irrigation, Sewer | United States | North America |
| City of Willis | Water, Sewer | United States | North America |
| City of Williston | Water, Sewer, Other Service Type, Sanitation, Electric | United States | North America |
| City Of Wilmington | Water, Sewer, Sanitation | United States | North America |
| City of Wilson | Water, Irrigation, Sewer, Lighting, Sanitation, Electric, Natural Gas | United States | North America |
| City of Wilsonville | Water, Irrigation, Sewer, Lighting | United States | North America |
| City of Winchester | Water, Sewer, Sanitation | United States | North America |
| City of Winder | Water, Irrigation, Sewer, Sanitation, Natural Gas | United States | North America |
| City of Windom | Water, Sewer, Lighting, Electric | United States | North America |
| City of Winfield | Water, Sewer, Sanitation, Lighting, Electric, Natural Gas | United States | North America |
| City of Winston Salem | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Winter Garden | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Winter Haven | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Winter Park | Water, Irrigation, Sewer, Sanitation, Lighting, Electric | United States | North America |
| City of Winter Springs | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Wisconsin Dells | Water, Sewer, Sanitation, Electric | United States | North America |
| City of Wixom | Water, Sewer | United States | North America |
| City of Wolfforth Utility Service | Water, Sewer, Sanitation | United States | North America |
| City of Wood Dale | Water, Sewer, Sanitation | United States | North America |
| City of Woodburn | Water, Irrigation, Sewer | United States | North America |
| City of Woodbury | Water, Irrigation, Sewer, Sanitation, Lighting | United States | North America |
| City of Woodland | Water, Irrigation, Sewer | United States | North America |
| City of Woodstock | Water, Sewer, Sanitation | United States | North America |
| City of Woodstock | Water, Irrigation, Sewer | United States | North America |
| City of Woodway | Water, Irrigation, Sanitation | United States | North America |
| City of Wylie | Water, Sewer | United States | North America |
| City of Xenia | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City of Yoakum | Electric | United States | North America |
| City of Youngstown | Water, Sewer, Sanitation | United States | North America |
| City of Yreka | Water, Sewer, Sanitation | United States | North America |
| City of Yuba City Public Works Department | Water, Irrigation, Sewer | United States | North America |
| City of Yuma | Water, Sewer | United States | North America |
| City of Zachary | Water, Irrigation, Sewer, Sanitation, Natural Gas | United States | North America |
| City of Zephyrhills | Water, Irrigation, Sewer, Sanitation | United States | North America |
| City Utilities of Springfield | Water, Irrigation, Sewer, Lighting, Sanitation, Electric, Internet, Natural Gas | United States | North America |
| City Utilities Richland Center | Water, Sewer, Lighting, Electric | United States | North America |
| City Water | Water, Sewer, Lighting, Sanitation, Electric | United States | North America |
| CityOfSandSpringsOK | Water, Sewer, Sanitation | United States | North America |
| CKenergy Electric Cooperative Inc | Lighting, Electric | United States | North America |
| Clackamas County | Water, Sewer | United States | North America |
| Clallam County Public Utilities Department (PUD) | Water, Lighting, Electric | United States | North America |
| Clarence Valley Council | Water, Sewer, Sanitation | Australia | Oceania |
| Clark County Rural Electric Membership Corporation (REMC) | Sewer, Lighting, Electric | United States | North America |
| Clark County Water Reclamation District | Water, Sewer | United States | North America |
| Clark Electric Cooperative | Electric | United States | North America |
| Clark Energy Cooperative | Lighting, Electric | United States | North America |
| Clark Public Utilities | Water, Sewer, Lighting, Electric | United States | North America |
| Clark Regional Wastewater District | Water, Sewer | United States | North America |
| Clarke Electric Cooperative | Electric | United States | North America |
| Clarke-Washington Electric Membersip Corporation (EMC) | Lighting, Electric | United States | North America |
| Clarksdale Public Utilities | Water, Sewer, Sanitation, Electric | United States | North America |
| Clarksville Connected Utilities | Water, Sewer, Lighting, Electric, Internet | United States | North America |
| Clarksville Department of Electricity (CDE) | Water, Landline Phone, Lighting, Electric, Internet | United States | North America |
| Clarksville Wastewater Treatment | Sewer | United States | North America |
| Clatskanie People's Utility District | Electric | United States | North America |
| Claverack Rural Electric Cooperative (REC) | Electric | United States | North America |
| Clay County Electric Cooperative | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| Clay County Utility Authority | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Clay Electric Cooperative | Lighting, Electric | United States | North America |
| Clayton County Water Authority | Water, Irrigation, Sewer | United States | North America |
| Clean Harbors | Sewer, Sanitation | United States | North America |
| Clean Sky Energy | Lighting, Electric, Natural Gas | United States | North America |
| Clear Business | Water, Sewer, Sanitation | United Kingdom | Europe |
| Clear Creek Community Services District | Water | United States | North America |
| Clear Lake City Water Authority | Water, Sewer | United States | North America |
| Clear Lake Sanitary District | Sanitation | United States | North America |
| Clearfield Municipal Authority | Water, Sewer | United States | North America |
| Clearwater Power Co. | Lighting, Electric | United States | North America |
| Clermont County Water Resources Department | Water, Irrigation, Sewer | United States | North America |
| Cleveland County Water | Water, Sewer | United States | North America |
| Cleveland Public Power | Lighting, Electric | United States | North America |
| Cleveland Utilities | Water, Irrigation, Sewer, Sanitation, Lighting, Electric | United States | North America |
| Clinton County Electric Cooperative | Lighting, Electric | United States | North America |
| Clinton Newberry Natural Gas Authority (CNNGA) | Natural Gas | United States | North America |
| Clinton Utilities Board (CUB) | Water, Sewer, Lighting, Electric | United States | North America |
| Clintonville Utilities | Water, Sewer, Electric | United States | North America |
| Cloverland Electric Cooperative | Lighting, Electric | United States | North America |
| CLP Power | Electric | Hong Kong | Asia |
| CMS Electric Cooperative Inc | Electric | United States | North America |
| CNP Utility District | Water, Sewer | United States | North America |
| Co-Mo Electric Cooperative | Lighting, Electric | United States | North America |
| Coachella Valley Water District | Water, Sewer | United States | North America |
| Coahoma Electric Power Association | Lighting, Electric | United States | North America |
| Coast Electric Power Association | Lighting, Electric, Internet | United States | North America |
| Coastal Electric Cooperative | Lighting, Electric | United States | North America |
| Coastal Waste and Recycling Inc | Sanitation | United States | North America |
| Cobb County Water System | Water, Irrigation, Sewer, Lighting | United States | North America |
| Cobb Electric Membership Corporation (EMC) | Lighting, Electric | United States | North America |
| Coles-Moultrie Electric Cooperative | Lighting, Electric | United States | North America |
| Collier County Utilities | Water, Irrigation, Sewer | United States | North America |
| Collus PowerStream Corporation | Water, Sewer, Electric | Canada | North America |
| Colorado Natural Gas | Natural Gas | United States | North America |
| Colorado Springs Utilities | Water, Telecom, Sewer, Lighting, Electric, Natural Gas | United States | North America |
| Colquitt Electric Membership Corporation (EMC) | Lighting, Electric | United States | North America |
| Columbia Basin Electric Cooperative | Lighting, Electric | United States | North America |
| Columbia Gas | Natural Gas | United States | North America |
| Columbia Gas of Kentucky | Natural Gas | United States | North America |
| Columbia Gas of Ohio | Natural Gas | United States | North America |
| Columbia Gas of Pennsylvania | Natural Gas | United States | North America |
| Columbia Gas of Virginia | Natural Gas | United States | North America |
| Columbia Power and Water Systems | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| Columbia River PUD | Electric | United States | North America |
| Columbia Rural Electric Association (REA) | Lighting, Electric | United States | North America |
| Columbia Water Company | Water | United States | North America |
| Columbus City Utilities | Water, Irrigation, Sewer | United States | North America |
| Columbus Electric Cooperative | Electric | United States | North America |
| Columbus Water & Light | Water, Sewer, Lighting, Electric | United States | North America |
| Columbus Water Works | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Comcast Business | Telecom, Landline Phone, Television, Other Service Type, Internet | United States | North America |
| Comisión Estatal de Servicios Públicos de Tijuana (CESPT) | Water | Mexico | North America |
| Comisión Federal de Electricidad (CFE) | Water, Sewer, Lighting, Electric | Mexico | North America |
| Commercial Energy | Electric, Natural Gas | United States | North America |
| Commonwealth Edison (ComEd) | Lighting, Electric | United States | North America |
| Community Electric Cooperative | Lighting, Electric | United States | North America |
| Community Utilities Of Indiana | Water, Sewer | United States | North America |
| Compagnie Parisienne De Chauffage Urbain | Electric | France | Europe |
| Compania General De Electricidad (CGE) | Electric | Chile | South America |
| Con Edison (ConEd) | Water, Sewer, Lighting, Steam, Electric, Natural Gas | United States | North America |
| Concho Valley Electric Cooperative | Lighting, Electric | United States | North America |
| Connecticut Natural Gas (CNG) | Electric, Natural Gas | United States | North America |
| Connecticut Water | Water, Sewer | United States | North America |
| Connersville Utilities | Water, Sewer, Sanitation | United States | North America |
| Connexus Energy | Lighting, Electric | United States | North America |
| Conservice | Water, Sewer, Sanitation, Electric, Natural Gas | United States | North America |
| Consolidated Communications | Landline Phone, Internet | United States | North America |
| Consolidated Cooperative | Lighting, Electric, Internet | United States | North America |
| Consolidated Electric Cooperative | Electric | United States | North America |
| Consolidated Mutual Water | Water, Irrigation | United States | North America |
| Consolidated Public Water Supply District No 1 Of Barton Dade Cedar And Jasper County | Water | United States | North America |
| Consolidated Utilities Billing and Service | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Consolidated Utility District | Water, Sewer, Sanitation | United States | North America |
| Consolidated Waterworks District No. 1 | Water, Sewer, Sanitation | United States | North America |
| Constellation | Water, Lighting, Electric, Natural Gas | United States | North America |
| Constellation NewEnergy | Lighting, Electric, Natural Gas | United States | North America |
| Consumer Cellular | Landline Phone, Natural Gas | United States | North America |
| Consumers Energy | Other Service Type, Lighting, Electric, Natural Gas | United States | North America |
| Consumers Energy | Lighting, Electric, Natural Gas | United States | North America |
| Consumers Power Incorporated (CPI) | Electric | United States | North America |
| Continental Divide Electric Cooperative (CDEC) | Lighting, Electric | United States | North America |
| Contra Costa Water District | Water | United States | North America |
| Conway Corporation | Water, Irrigation, Telecom, Landline Phone, Sewer, Television, Lighting, Sanitation, Electric, Internet | United States | North America |
| Coos-Curry Electric Cooperative | Lighting, Electric | United States | North America |
| Copper Valley Electric Association (CVEA) | Lighting, Electric | United States | North America |
| Core Electric Cooperative | Lighting, Electric | United States | North America |
| Corn Belt Energy Corporation | Lighting, Electric | United States | North America |
| Cornwall Electric | Water, Sewer, Lighting, Electric | Canada | North America |
| Corona Energy | Natural Gas | United Kingdom | Europe |
| Coserv | Lighting, Electric, Natural Gas | United States | North America |
| Cotton Electric Cooperative | Lighting, Electric | United States | North America |
| Council Bluffs Water Works | Water, Sewer | United States | North America |
| County Of Hawaii | Water, Sewer | United States | North America |
| County of Maui | Water, Sewer | United States | North America |
| County of Stafford | Water, Sewer | United States | North America |
| County of Summit Department of Sanitary Sewer Services | Water, Irrigation, Sewer | United States | North America |
| Covington Electric Cooperative | Lighting, Electric | United States | North America |
| Covington Water District | Water, Irrigation | United States | North America |
| Coweta County Water and Sewerage Authority | Water, Irrigation, Sewer | United States | North America |
| Coweta-Fayette Electric Membesrship Corporation | Lighting, Electric, Natural Gas | United States | North America |
| Cowlitz Public Utilities District | Lighting, Electric | United States | North America |
| Cox Business | Landline Phone, Television, Internet | United States | North America |
| CPS Energy | Water, Lighting, Sanitation, Electric, Natural Gas | United States | North America |
| CR&R Incorporated Environmental Services | Sanitation | United States | North America |
| Craighead Electric Cooperative | Lighting, Electric | United States | North America |
| Crawford Electric Cooperative Inc | Lighting, Electric | United States | North America |
| Crawfordsville Electric Light & Power | Lighting, Electric | United States | North America |
| Crescent City Water Sewer Department | Water, Sewer, Lighting, Sanitation, Electric | United States | North America |
| Crescenta Valley Water District | Water, Sewer | United States | North America |
| Crisp County Power Commission | Lighting, Electric | United States | North America |
| Crow Wing Cooperative Power Minnesota | Lighting, Electric | United States | North America |
| Crown Gas & Power | Natural Gas | United Kingdom | Europe |
| Crystal Springs Water | Water, Sewer | United States | North America |
| Cucamonga Valley Water District | Water, Irrigation, Sewer | United States | North America |
| Cuivre River Electric Cooperative Incorporated | Lighting, Electric | United States | North America |
| Cullman Electric Cooperative | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| Cullman Jefferson Counties Gas District | Natural Gas | United States | North America |
| Cumberland Electric Membership Corporation | Landline Phone, Lighting, Electric, Internet | United States | North America |
| Cumberland Municipal Utility | Water, Sewer, Electric | United States | North America |
| Cumberland Valley Electric | Lighting, Electric | United States | North America |
| Cuming County Public Power | Electric | United States | North America |
| Curry Water Authority Inc | Water | United States | North America |
| Curtis Bay Medical Waste Services | Sewer, Sanitation | United States | North America |
| Custer Public Power District | Electric | United States | North America |
| Cypress Forest Public Utility District | Water, Sewer | United States | North America |
| Cypress Hill Municipal Utility District #1 | Water, Sewer | United States | North America |
| Dahlberg Light and Power Company | Electric | United States | North America |
| Dakota Electric Association | Lighting, Electric | United States | North America |
| Dalkia | Electric | France | Europe |
| Dalton Utilities | Water, Sewer, Lighting, Electric, Natural Gas | United States | North America |
| Darke Rural Electric Cooperative | Lighting, Electric | United States | North America |
| Darlington County Water & Sewer Authority | Water, Irrigation, Sewer | United States | North America |
| Davidson Water Inc. | Water, Sewer | United States | North America |
| Davie County | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Daviess-Martin County Rural Electric Membership Corporation | Lighting, Electric | United States | North America |
| Davison Township | Water, Sewer | United States | North America |
| Dawson Public Power | Lighting, Electric | United States | North America |
| DC Water | Water, Sewer | United States | North America |
| De Watergroep | Water | Belgium | Europe |
| Deaf Smith Electric Coop | Electric | United States | North America |
| Decatur County REMC | Electric | United States | North America |
| Decatur Utilities | Water, Sewer, Lighting, Sanitation, Electric, Natural Gas | United States | North America |
| Dedham-Westwood Water District | Water, Sewer | United States | North America |
| Deep East Texas Electric Cooperative | Lighting, Electric | United States | North America |
| DeKalb County | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Delano Municipal Utilities | Water, Sewer, Lighting, Electric | United States | North America |
| Delaware County Electric Cooperative Inc | Electric | United States | North America |
| Delaware County Water Company | Water, Sewer | United States | North America |
| Delaware Electric Cooperative (DEC) | Lighting, Electric | United States | North America |
| Delcora | Sewer | United States | North America |
| Delmarva Power | Water, Irrigation, Sewer, Lighting, Electric, Natural Gas | United States | North America |
| Delta Natural Gas Co | Natural Gas | United States | North America |
| Delta-Montrose Electric Association (DMEA) | Lighting, Electric | United States | North America |
| Demopolis Water Works And Sewer Board AL | Water, Sewer, Sanitation | United States | North America |
| Denison Municipal Utilities | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| Denton County Fresh Water Supply District | Water, Irrigation, Sewer | United States | North America |
| Denver Water | Water, Irrigation, Sewer | United States | North America |
| Department of Water Works | Water, Sewer | United States | North America |
| DependaBill Solutions | Water, Sewer | United States | North America |
| Des Moines Water Works | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Destin Water Users Inc | Water, Irrigation, Sewer | United States | North America |
| Dick's Sanitation Incorporated | Sanitation | United States | North America |
| Dickson Electric Systems | Sanitation, Lighting, Electric | United States | North America |
| Direct Energy | Water, Sewer, Lighting, Electric, Natural Gas | United States | North America |
| District of North Vancouver | Water, Sewer, Sanitation | Canada | North America |
| District Of Saanich | Water, Sewer, Sanitation | Canada | North America |
| Diverse Power | Lighting, Electric | United States | North America |
| Dixie Electric Cooperative | Lighting, Electric | United States | North America |
| Dixie Electric Memebership Cooperative (DEMCO) | Lighting, Electric | United States | North America |
| Dixie Power | Lighting, Electric | United States | North America |
| Dolomiti Energia | Water, Sewer, Electric, Natural Gas | Italy | Europe |
| Dominion Energy | Lighting, Electric, Natural Gas | United States | North America |
| Dominion Energy | Lighting, Electric, Natural Gas | United States | North America |
| Dominion Energy | Electric, Natural Gas | United States | North America |
| Dominion Energy (Utah | Lighting, Electric, Natural Gas | United States | North America |
| Dominion Energy South Carolina | Lighting, Electric, Natural Gas | United States | North America |
| Donala Water And Sanitation District | Water, Sanitation | United States | North America |
| DoorKing | Landline Phone | United States | North America |
| Dorchester County Water and Sewer | Water, Sewer | United States | North America |
| Douglas County Public Utility District | Electric | United States | North America |
| Douglas Electric Cooperative | Lighting, Electric | United States | North America |
| Douglasville-Douglas County Water and Sewer Authority | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Dowdell Public Utility District | Water, Sewer | United States | North America |
| Downeast Energy | Fuel Oil, Propane | United States | North America |
| DS&O Electric Cooperative | Electric | United States | North America |
| DTE Energy | Water, Sewer, Lighting, Electric, Natural Gas | United States | North America |
| Dubai Electricity & Water Authority | Water, Irrigation, Sewer, Sanitation, Electric | United Arab Emirates | Asia |
| Dublin San Ramon Services District | Water, Irrigation, Sewer | United States | North America |
| Dubois Rural Electric Cooperative | Lighting, Electric | United States | North America |
| Duck River Electric Membership Corporation | Lighting, Electric | United States | North America |
| Duckett Creek Sanitary District | Sewer | United States | North America |
| Duke Energy | Water, Lighting, Steam, Electric, Natural Gas | United States | North America |
| Dunea | Water | Netherlands | Europe |
| Dunes Community Development District | Water, Irrigation, Sewer | United States | North America |
| Dunn Energy Cooperative | Electric | United States | North America |
| Dupont Water Company Inc | Water | United States | North America |
| Duquesne Light Co. (DLC) | Lighting, Electric, Natural Gas | United States | North America |
| Dwr Cymru Welsh Water | Water, Sewer | United Kingdom | Europe |
| Dyersburg Electric System | Lighting, Electric | United States | North America |
| Dynegy Energy Services | Lighting, Electric, Natural Gas | United States | North America |
| E.J. Harrison & Sons | Sanitation | United States | North America |
| E.L. Harvey & Sons | Sanitation | United States | North America |
| E.on | District Heat, Electric, Natural Gas | United Kingdom | Europe |
| Eagle River Light and Water Department | Water, Sewer, Electric | United States | North America |
| Eagle River Water and Sanitation District | Water, Sewer | United States | North America |
| Easley Combined Utilities | Water, Irrigation, Sewer, Lighting, Electric | United States | North America |
| East Bay Municipal Utility District (EBMUD) | Water, Irrigation, Sewer | United States | North America |
| East Central Electric Cooperative | Lighting, Electric | United States | North America |
| East Central Energy | Lighting, Electric | United States | North America |
| East Central Special Utility District | Water, Sewer | United States | North America |
| East Daviess County Water Association | Water, Sewer | United States | North America |
| East Larimer County Water District | Water | United States | North America |
| East Mississippi Electric Power Association (EMEPA) | Lighting, Electric | United States | North America |
| East Orange Water Commission | Water, Sewer | United States | North America |
| East Pennsboro Township | Water, Sewer | United States | North America |
| East Richland County Public Service District (ERCPSD) | Sewer | United States | North America |
| East Valley Water District | Water, Sewer | United States | North America |
| East Wenatchee Water District | Water | United States | North America |
| Eastern | Propane, Natural Gas | United States | North America |
| Eastern Illini Electric Cooperative | Lighting, Electric | United States | North America |
| Eastern Maine Electric Cooperative | Electric | United States | North America |
| EastLink | Landline Phone, Television, Internet | Canada | North America |
| Easton Suburban Water Authority | Water, Irrigation | United States | North America |
| Easton Utilities Commission | Water, Sewer, Electric, Internet, Natural Gas | United States | North America |
| Eastward Energy | Natural Gas | Canada | North America |
| Eau Claire Energy Cooperative (ECEC) | Lighting, Electric | United States | North America |
| Eau Coeur D Essonne | Water, Sewer | France | Europe |
| Eau D Azur Votre Regie De Leau | Water, Sewer | France | Europe |
| Eau de Paris | Water, Sewer | France | Europe |
| Eau du Grand Lyon | Water | France | Europe |
| EcoSouth Services | Sanitation | United States | North America |
| EDCO Disposal Corporation | Sanitation | United States | North America |
| Edenkia | Electric | France | Europe |
| EDF Energy | Lighting, Electric, Natural Gas | United Kingdom | Europe |
| EDF Entreprises | Electric, Natural Gas | France | Europe |
| Edge Utilities | Water, Sewer, Natural Gas | United States | North America |
| Edison Energia (Business) | Electric, Natural Gas | Italy | Europe |
| Edisto Electric Cooperative | Lighting, Electric | United States | North America |
| EDP Energía | Electric, Natural Gas | Spain | Europe |
| EDP Energias de Portugal | Electric | Portugal | Europe |
| Edwardsville Water Corporation | Water | United States | North America |
| Egyptian Electric Cooperative Association | Lighting, Electric | United States | North America |
| El Dorado Irrigation District | Water, Irrigation, Sewer | United States | North America |
| El Paso Electric Company | Lighting, Electric | United States | North America |
| El Paso Water | Water, Irrigation, Sewer, Sanitation | United States | North America |
| El Toro Water District | Water, Sewer | United States | North America |
| Elberton Utilities | Water, Sewer, Lighting, Electric, Internet, Natural Gas | United States | North America |
| Electric Ireland | Electric, Natural Gas | Ireland | Europe |
| Electric Power Board | Landline Phone, Television, Lighting, Electric, Internet | United States | North America |
| Electrical District No. Two (ED2) | Telecom, Television, Electric | United States | North America |
| Electrical District No.3 | Lighting, Electric | United States | North America |
| Electricite de Savoie | Electric | France | Europe |
| ElectriCities | Lighting, Electric | United States | North America |
| ElectriCities | Electric | United States | North America |
| Electricities of North Carolina Incorporated | Lighting, Electric | United States | North America |
| Elektrizitätswerke des Kantons Zürich (EKZ) | Electric | Switzerland | Europe |
| Elektrizitatswerk Der Stadt Zurich | Electric | Switzerland | Europe |
| Elexicon Energy | Electric | United States | North America |
| Elizabethton Electric Department | Lighting, Electric | United States | North America |
| Elizabethtown Gas | Lighting, Natural Gas | United States | North America |
| ELK Energy Inc. | Water, Sewer, Lighting, Electric | Canada | North America |
| Elk Grove Water District | Water | United States | North America |
| Elk River Municipal Utilities | Water, Irrigation, Sewer, Lighting, Electric | United States | North America |
| Elkhart Public Utilities | Water, Sewer | United States | North America |
| Elkhorn Rural Public Power District | Electric | United States | North America |
| Ellevio | Electric | Sweden | Europe |
| Elmhurst Mutual Light & Power Company | Electric | United States | North America |
| ELMU-EMASZ Energiakereskedo Kft | Electric | Hungary | Europe |
| Elsinore Valley Municipal Water District (EVMWD) | Water, Irrigation, Sewer | United States | North America |
| Emerald Coast Utilities Authority | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Emerald People's Utility District (EPUD) | Television, Lighting, Electric | United States | North America |
| Empire Electric Association Inc. | Lighting, Electric | United States | North America |
| Empire Waste Services | Sanitation | United States | North America |
| Empresa Portuguesa Das Aguas Livres S.A. | Water, Sewer, Sanitation | Portugal | Europe |
| Enbridge | Water, Sewer, Other Service Type, Sanitation, Electric, Natural Gas | Canada | North America |
| Enbridge Gas Ohio | Natural Gas | United States | North America |
| Enbridge Gas UT WY ID | Natural Gas | United States | North America |
| Encore Energy Services | Natural Gas | United States | North America |
| Endesa | Electric, Natural Gas | Spain | Europe |
| Enea SA | Electric, Natural Gas | Poland | Europe |
| Eneco | Electric | United Kingdom | Europe |
| Eneco Netherlands | Electric, Natural Gas | Netherlands | Europe |
| Enel | Lighting, Electric | Brazil | South America |
| Enel Energia | Electric, Natural Gas | Italy | Europe |
| Enel-Emgesa (Business) | Electric | Colombia | South America |
| Energia | Electric, Natural Gas | Ireland | Europe |
| Energia XXI | Electric | Spain | Europe |
| Energie 360 | Natural Gas | Switzerland | Europe |
| Energie Belp AG | Water, Sewer, Television, Sanitation, Electric | Switzerland | Europe |
| Energie SaarLorLux AG | Natural Gas | Germany | Europe |
| Energie-Und Wasserversorgung Bunde GmbH | Water, Sewer, Natural Gas | Germany | Europe |
| Energieversorgung Mittelrhein (EVM) | Water, Natural Gas | Germany | Europe |
| Energir | Electric, Natural Gas | Canada | North America |
| Energy Australia | Electric, Natural Gas | Australia | Oceania |
| Energy Center Minneapolis | Water, Steam, Electric, Chilled Water | United States | North America |
| Energy Cooperative | Lighting, Electric, Natural Gas | United States | North America |
| Energy Management System (EMS) | Electric | United States | North America |
| Energy Management Systems | Water, Irrigation, Sewer, Steam, Electric, Natural Gas | United States | North America |
| Energy Plus | Electric, Natural Gas | Canada | North America |
| Energy To Go | Electric | United States | North America |
| Energy West | Natural Gas | United States | North America |
| EnergyUnited | Water, Lighting, Electric | United States | North America |
| EnerStar | Lighting, Electric | United States | North America |
| Enertherm | Water, Sewer, Electric, Natural Gas | France | Europe |
| Enexis Netbeheer | Electric, Natural Gas | Netherlands | Europe |
| Engie | Electric, Natural Gas | Netherlands | Europe |
| Engie Electrabel | Electric, Natural Gas | Belgium | Europe |
| Engie Gas Limited | Electric, Natural Gas | United Kingdom | Europe |
| Engie Resources (FR) | Lighting, Electric, Natural Gas | France | Europe |
| Engie Resources (US/UK) | Lighting, Electric, Natural Gas | United Kingdom | Europe |
| Engie Romania | Electric, Natural Gas | Romania | Europe |
| Eni en France | Electric | France | Europe |
| Eniwa AG | Electric, Natural Gas | Switzerland | Europe |
| ENMAX | Water, Irrigation, Sewer, Sanitation, Lighting, Electric, Natural Gas | Canada | North America |
| Enova Power Corporation | Sanitation, Electric | Canada | North America |
| Enovos | Electric | France | Europe |
| Enspire Energy | Natural Gas | United States | North America |
| ENSTAR Natural Gas Company | Natural Gas | United States | North America |
| Entegrus | Water, Sewer, Electric | United States | North America |
| Entergy | Lighting, Electric, Natural Gas | United States | North America |
| Environmental Development Partners | Water, Irrigation, Sewer | United States | North America |
| Enwave | Water, Chilled Water | United States | North America |
| Enwave Seattle | Steam, Electric | United States | North America |
| ENWIN | Water, Sewer, Electric | Canada | North America |
| EON Next | Electric, Natural Gas | United Kingdom | Europe |
| EPCOR | Water, Irrigation, Sewer, Sanitation, Electric, Natural Gas | Canada | North America |
| Equs Rea Ltd | Electric | Canada | North America |
| Ergon Energy | Electric | Australia | Oceania |
| Erie County Water Authority | Water | United States | North America |
| Erie County Water Authority | Water, Sewer | United States | North America |
| ERTH Power | Water, Irrigation, Sewer, Lighting, Electric | Canada | North America |
| Erth Solutions | Water, Sewer, Electric | Canada | North America |
| Erwin Utilities | Water, Sewer, Lighting, Electric, Internet | United States | North America |
| ES Energies de Strasbourg | Natural Gas | France | Europe |
| Escambia River Electric Cooperative Inc | Lighting, Electric | United States | North America |
| Esparto Community Services District | Water, Sewer, Lighting | United States | North America |
| Essex Powerlines Corporation | Water, Sewer, Lighting, Electric | Canada | North America |
| Estill County Water District | Water | United States | North America |
| Estra Energie | Electric, Natural Gas | Italy | Europe |
| Etowah Water and Sewer Authority | Water, Sewer | United States | North America |
| Eufaula Water Works | Water, Sewer, Sanitation | United States | North America |
| Eugene Water And Electric Board | Water, Sewer, Lighting, Electric | United States | North America |
| Evansville Water & Light | Water, Sewer, Sanitation, Electric | United States | North America |
| Evergy | Lighting, Electric | United States | North America |
| Eversource | Sanitation, Lighting, Electric, Natural Gas | United States | North America |
| Evides Waterbedrijf | Water | Netherlands | Europe |
| EW Hofe AG | Electric, Internet, Natural Gas | Switzerland | Europe |
| Excelsior EMC | Lighting, Electric | United States | North America |
| Exergia | Electric | Italy | Europe |
| factorenergía | Electric | Spain | Europe |
| Fairfax Water | Water, Sewer | United States | North America |
| Fairfield Electric Cooperative | Lighting, Electric | United States | North America |
| Fairport Electric | Lighting, Electric | United States | North America |
| Fall River Rural Electric Cooperative | Electric | United States | North America |
| Fallbrook Public Utility District | Water, Sewer | United States | North America |
| Farmers Electric Cooperative | Lighting, Electric | United States | North America |
| Farmers Electric Cooperative | Lighting, Electric | United States | North America |
| Farmers Electric Cooperative | Lighting, Electric | United States | North America |
| Farmers Electric Cooperative | Lighting, Electric | United States | North America |
| Farmers Rural Electric Cooperative | Lighting, Electric | United States | North America |
| Fauquier County Water And Sanitation Authority | Water, Sewer | United States | North America |
| Fayette County | Water, Irrigation, Sewer | United States | North America |
| Fayette Electric Cooperative | Electric | United States | North America |
| Fayetteville Public Utilities (FPU) | Water, Telecom, Irrigation, Sewer, Sanitation, Lighting, Electric, Internet, Natural Gas | United States | North America |
| Fergus Electric Cooperative Inc | Electric | United States | North America |
| FerrellGas | Other Service Type, Lighting, Natural Gas, Propane | United States | North America |
| Festival Hydro | Water, Sewer, Lighting, Electric | Canada | North America |
| Firelands Electric Cooperative | Lighting, Electric | United States | North America |
| FireSide Natural Gas | Natural Gas | United States | North America |
| Firgrove Mutual Water Company | Water | United States | North America |
| First District Water Department | Water, Sewer | United States | North America |
| First Electric Cooperative | Lighting, Electric | United States | North America |
| First Energy | Lighting, Electric, Natural Gas | United States | North America |
| First Utility District of Knox County | Water, Sewer | United States | North America |
| Fitzgerald Utilities | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| Flagg Creek Water Reclamation District | Water, Sewer | United States | North America |
| Flathead Electric Cooperative | Lighting, Electric | United States | North America |
| Fleming-Mason Energy | Lighting, Electric | United States | North America |
| Flint Energies | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| Flint Hills Rural Electric Cooperative (FH) | Electric | United States | North America |
| Flogas | Electric, Natural Gas | Ireland | Europe |
| Florence Utilities | Water, Sewer, Electric, Natural Gas | United States | North America |
| Floresville Electric Light & Power System (FELPS) | Lighting, Electric | United States | North America |
| Florida City Gas | Lighting, Natural Gas | United States | North America |
| Florida Governmental Utility Authority (FGUA) | Water, Irrigation, Sewer | United States | North America |
| Florida Keys Aqueduct Authority | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Florida Keys Electric Cooperative | Lighting, Electric | United States | North America |
| Florida Natural Gas | Natural Gas | United States | North America |
| Florida Power & Light Company (FPL) | Sewer, Sanitation, Lighting, Electric, Natural Gas | United States | North America |
| Florida Public Utilities | Other Service Type, Lighting, Electric, Propane, Natural Gas | United States | North America |
| Fontana Water | Water, Irrigation, Natural Gas | United States | North America |
| Forked Deer Electric Cooperative Inc | Electric | United States | North America |
| Forsyth County | Water, Irrigation, Sewer | United States | North America |
| Fort Bend County Fresh Water Supply District No. 2 | Water, Sewer | United States | North America |
| Fort Bend County Municipal Utility District 116 | Water, Sewer | United States | North America |
| Fort Bend County Municipal Utility District 122 | Water, Sewer | United States | North America |
| Fort Bend County Municipal Utility District 47 | Water, Sewer, Sanitation | United States | North America |
| Fort Bend County Municipal Utility District 50 | Water, Sewer | United States | North America |
| Fort Bend County Municipal Utility District No 25 | Water, Sewer | United States | North America |
| Fort Bend County Municipal Utility District No. 142 | Water, Irrigation, Sewer | United States | North America |
| Fort Bend County Municipal Utility District No. 143 | Water, Sewer | United States | North America |
| Fort Bend County Municipal Utility District No. 146 | Water, Sewer | United States | North America |
| Fort Bend County Municipal Utility Districts | Water, Sewer, Sanitation | United States | North America |
| Fort Bend County Water Control & Improvement District No 2 | Water, Sewer, Sanitation, Electric | United States | North America |
| Fort Collins Loveland Water District & South Fort Collins Sanitation District | Water, Sewer | United States | North America |
| Fort Frances Power Corporation | Water, Sewer, Electric | Canada | North America |
| Fort Hill Natural Gas Authority | Natural Gas | United States | North America |
| Fort Loudoun Electric Cooperative | Lighting, Electric | United States | North America |
| Fort Payne Improvement Authority | Lighting, Electric | United States | North America |
| FortisBC | Lighting, Electric, Propane, Natural Gas | Canada | North America |
| Fortum | Electric | Sweden | Europe |
| Four County Electric Membership Corporation | Lighting, Electric | United States | North America |
| Four Rivers Electric Cooperative | Electric | United States | North America |
| Fox Metro Water Reclamation District | Water, Sewer | United States | North America |
| Frankfort Municipal Utilities | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| Frankfort Plant Board | Water, Telecom, Landline Phone, Sewer, Television, Other Service Type, Lighting, Electric, Internet | United States | North America |
| Franklin County Department of Sanitary Engineering | Water, Sewer | United States | North America |
| Franklin PUD | Electric | United States | North America |
| Franklin Township Municipal Sanitary Authority | Sewer, Sanitation | United States | North America |
| Frederick County | Water, Sewer | United States | North America |
| Frederick Water | Water, Irrigation, Sewer | United States | North America |
| Free State Electric Cooperative | Lighting, Electric | United States | North America |
| Freeborn-Mower Cooperative Services | Lighting, Electric | United States | North America |
| Freepoint Energy Solutions | Lighting, Electric, Natural Gas | United States | North America |
| Freeport Electric | Water, Sewer, Electric | United States | North America |
| French Broad Electric Membership Corporation | Lighting, Electric | United States | North America |
| Frenchtown Charter Township | Water, Sewer | United States | North America |
| Frontier Communications | Telecom, Landline Phone, Television, Internet | United States | North America |
| Frontier Natural Gas Company | Natural Gas | United States | North America |
| Frontier Utilities | Electric, Natural Gas | United States | North America |
| Fruitland Mutual Water Company | Water | United States | North America |
| Fuel Georgia | Lighting, Electric, Natural Gas | United States | North America |
| Fulton County Rural Electric Membership Corporation | Lighting, Electric | United States | North America |
| Fulton County Water | Water, Irrigation, Sewer | United States | North America |
| Fulton Electric System | Electric | United States | North America |
| Fusion Cloud Services LLC | Landline Phone | United States | North America |
| ČEZ | Electric | Czech Republic | Europe |
| G And W Water Supply Corporation | Water | United States | North America |
| Gaffney | Water, Sewer, Lighting, Electric | United States | North America |
| Gainesville Regional Utilities (GRU) | Water, Irrigation, Sewer, Lighting, Sanitation, Electric, Internet, Natural Gas | United States | North America |
| Gallatin Electric Department | Lighting, Electric | United States | North America |
| Garkane Energy | Lighting, Electric | United States | North America |
| Garland Light And Power Company | Water, Electric | United States | North America |
| Gas City Utilities | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| Gas South | Natural Gas | United States | North America |
| GASAG | Natural Gas | Germany | Europe |
| Gaz de Bordeaux | Natural Gas | France | Europe |
| Gaz Electricité de Grenoble (GEG) | Electric | France | Europe |
| Gaz Europeen | Natural Gas | France | Europe |
| Gazel Energie | Electric | United States | North America |
| Gazifére | Natural Gas | Canada | North America |
| GCI | Telecom, Internet | United States | North America |
| Geneco | Electric | Singapore | Asia |
| Genesis | Electric, Natural Gas | New Zealand | Oceania |
| Georgetown Charter Township | Water, Irrigation, Sewer | United States | North America |
| Georgetown Municipal Water and Sewer Service | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Georgia Natural Gas (GNG) | Natural Gas | United States | North America |
| Georgia Power | Lighting, Electric | United States | North America |
| Gesternova Energia | Electric, Natural Gas | Spain | Europe |
| Gexa Energy | Lighting, Electric | United States | North America |
| GFL Environmental | Irrigation, Sanitation, Natural Gas | United States | North America |
| Gibson County Utility District (GCUD) | Natural Gas | United States | North America |
| Gibson Electric Membership Corporation | Lighting, Electric, Internet | United States | North America |
| Glacier Electric Cooperative (GEC) | Lighting, Electric | United States | North America |
| Glades Electric Cooperative | Lighting, Electric | United States | North America |
| Glasgow Electric Plant Board | Television, Lighting, Electric, Internet | United States | North America |
| Glasgow Water Company | Water, Sewer | United States | North America |
| Glenwood Energy | Natural Gas | United States | North America |
| Global Water Resources | Water, Irrigation, Sewer | United States | North America |
| GNP Energy Finland Oy | Electric | Finland | Europe |
| Goa Electricity Department | Electric | India | Asia |
| Golden State Water Company | Water, Sewer, Sanitation | United States | North America |
| Golden Valley Electric Association (GVEA) | Electric | United States | North America |
| Goleta Water District | Water, Sewer | United States | North America |
| Grand Blanc Township | Water, Irrigation, Sewer | United States | North America |
| Grand Bridge Energy | Water, Sewer, Electric | Canada | North America |
| Grand Haven Board of Light and Power | Lighting, Electric | United States | North America |
| Grand Lakes Municipal Utility District | Water, Irrigation, Sewer | United States | North America |
| Grand Rapids Public Utilities | Water, Sewer, Lighting, Electric | United States | North America |
| Grand Strand Water And Sewer Authority | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Grand Traverse County | Water, Sewer | United States | North America |
| Grand Valley Power (GVP) | Lighting, Electric | United States | North America |
| Granger Hunter Improvement District | Water, Sewer | United States | North America |
| Granite Telecommunications | Telecom, Landline Phone, Internet | United States | North America |
| Grant County Public Utility District (PUD) | Lighting, Electric | United States | North America |
| Grant County Sewer District | Water, Sewer | United States | North America |
| Grays Harbor Public Utility District (PUD) | Lighting, Electric | United States | North America |
| Grayson Rural Electric Cooperative Corporation | Lighting, Electric | United States | North America |
| Grayson-Collin Electric Cooperative | Lighting, Electric | United States | North America |
| Great Lakes Energy | Lighting, Electric | United States | North America |
| Great Plains Natural Gas Company (GPNG) | Natural Gas | United States | North America |
| Greater Cincinnati Water Works | Water, Irrigation, Sewer, Sanitation, Electric | United States | North America |
| Greater Dickson Gas Authority Dickson TN | Natural Gas | United States | North America |
| Greater Johnstown Water Authority | Water, Sewer | United States | North America |
| Greater Minnesota Gas | Natural Gas | United States | North America |
| Greater New Haven Water Pollution Control Authority (GNHWPCA) | Sewer | United States | North America |
| Greater Sudbury Utilities (GSU) | Water, Irrigation, Sewer, Electric | Canada | North America |
| Green Bay Water Utility | Water, Sewer | United States | North America |
| Green Island Power Authority | Electric | United States | North America |
| Green Mountain Energy | Lighting, Electric, Natural Gas | United States | North America |
| Green Mountain Power | Lighting, Electric, Natural Gas | United States | North America |
| Green Mountain Water And Sanitation District | Water, Sewer | United States | North America |
| Green Valley Special Utility District | Water, Sewer | United States | North America |
| Greene County | Water, Irrigation, Sewer | United States | North America |
| Greeneville Light & Power System (GLPS) | Lighting, Electric | United States | North America |
| Greeneville Water Commission | Water, Sewer | United States | North America |
| Greenfield Municipal Utilities | Water, Sewer, Electric | United States | North America |
| Greens Parkway Municipal Utility District | Water, Sewer | United States | North America |
| Greenville Utilities | Water, Irrigation, Sewer, Lighting, Electric, Natural Gas | United States | North America |
| Greenville Water | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Greenville Water Authority | Water, Sewer | United States | North America |
| Greenwood Commissioners of Public Works | Water, Irrigation, Sewer, Lighting, Electric, Natural Gas | United States | North America |
| Greenwood Municipal District Services | Water, Sewer | United States | North America |
| Greenwood Utilities (GU) | Water, Sewer, Lighting, Sanitation, Electric | United States | North America |
| Greer Commission of Public Works (CPW) | Water, Sewer, Lighting, Electric, Natural Gas | United States | North America |
| Gresham Municipal Utilities | Electric | United States | North America |
| Grey Forest Utilities | Water, Natural Gas | United States | North America |
| GreyStone Power Corporation | Lighting, Electric | United States | North America |
| Groton Electric Light Department | Lighting, Electric | United States | North America |
| Groton Utilities | Water, Electric | United States | North America |
| Groupe E AG | Electric | Switzerland | Europe |
| Grove Municipal Services Authority | Water, Sewer, Sanitation, Lighting, Natural Gas | United States | North America |
| Grundy County Rural Electric Cooperative | Lighting, Electric | United States | North America |
| Grundy Electric Cooperative Inc | Electric | United States | North America |
| GS Inima | Water, Sewer | Spain | Europe |
| Guadalupe Valley Electric Cooperative (GVEC) | Sanitation, Lighting, Electric | United States | North America |
| Guam Power Authority | Electric | United States | North America |
| Guardian Water and Power | Water, Sewer, Sanitation, Electric, Natural Gas | United States | North America |
| Guelph Hydro Electric Systems Incorporated | Water, Sewer, Electric | Canada | North America |
| Gulfport Mississippi | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Gunnison County Electric Association (GCEA) | Electric | United States | North America |
| Guthrie County Rural Electric Cooperative | Electric | United States | North America |
| Gwinnett County Department of Water Resources | Water, Irrigation, Sewer | United States | North America |
| Habersham Electric Membership Corporation | Lighting, Electric, Internet | United States | North America |
| Hafslund Energi | Electric | Sweden | Europe |
| Halifax County | Water | United States | North America |
| Halifax Electric Membership Corporation | Electric | United States | North America |
| Halifax Water | Water, Irrigation, Sewer | Canada | North America |
| Hallsdale Powell Utility District | Water, Sewer | United States | North America |
| Halton Hills Hydro | Water, Electric | Canada | North America |
| Hamilton County Electric Cooperative | Electric | United States | North America |
| Hamilton County Water And WasteWater Treatment Authority (WWTA) | Sewer | United States | North America |
| Hammond Water Works | Water, Sewer, Sanitation | United States | North America |
| Hampden Township | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Hampton Roads | Water, Irrigation, Sewer | United States | North America |
| Hampton Roads Sanitation District | Water, Sewer, Sanitation | United States | North America |
| Hampton Shaler Water Authority | Water, Sewer | United States | North America |
| Hancock Wood Electric Cooperative | Lighting, Electric | United States | North America |
| Hannibal Board of Public Works (HBPW) | Water, Sewer, Lighting, Sanitation, Electric | United States | North America |
| Hanover County Public Utilities | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Hardin County Water District No.1 | Water, Irrigation, Sewer | United States | North America |
| Hardin County Water District Number 2 | Water, Irrigation, Sewer | United States | North America |
| Harford County | Water, Sewer | United States | North America |
| Harlan Municipal Utilities | Water, Sewer, Sanitation, Lighting, Electric, Natural Gas | United States | North America |
| Harney Electric Cooperative | Lighting, Electric | United States | North America |
| Harold LeMay Enterprises | Sanitation | United States | North America |
| Harpeth Valley Utilities District | Water, Sewer | United States | North America |
| Harris County Environmental Development Partners | Water, Sewer | United States | North America |
| Harris County Fresh Water Supply District | Water, Sewer | United States | North America |
| Harris County Fresh Water Supply District No. 27 | Water, Sewer | United States | North America |
| Harris County Improvement District 18 | Water, Sewer | United States | North America |
| Harris County Municipal Utility District | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Harris County Municipal Utility District #86 | Water, Sewer | United States | North America |
| Harris County Municipal Utility District 157 | Water, Sewer | United States | North America |
| Harris County Municipal Utility District 183 | Water, Sewer | United States | North America |
| Harris County Municipal Utility District 278 | Water, Sewer | United States | North America |
| Harris County Municipal Utility District No 120 | Water, Sewer | United States | North America |
| Harris County Municipal Utility District No 144 | Water, Sewer | United States | North America |
| Harris County Municipal Utility District No 168 | Water, Sewer | United States | North America |
| Harris County Municipal Utility District No 2 | Water, Sanitation | United States | North America |
| Harris County Municipal Utility District No 230 | Water, Sewer | United States | North America |
| Harris County Municipal Utility District No 26 | Water, Sewer | United States | North America |
| Harris County Municipal Utility District No 400 | Water, Sewer | United States | North America |
| Harris County Municipal Utility District No 495 | Water, Sewer | United States | North America |
| Harris County Municipal Utility District No 53 | Water, Sewer, Sanitation | United States | North America |
| Harris County Municipal Utility District No 55 | Water, Sewer | United States | North America |
| Harris County Municipal Utility District No. 249 | Water, Sewer | United States | North America |
| Harris County Utility District No 71 | Water, Sewer | United States | North America |
| Harris County Water Control And Improvement District No. 89 | Water, Sewer | United States | North America |
| Harris-Fort Bend Counties Municipal Utility District No 3 | Water, Sewer | United States | North America |
| Harrison County Development Commission | Water, Sewer | United States | North America |
| Harrison Rural Electric Association (HREA) | Lighting, Electric | United States | North America |
| Harrison Rural Electrification Association (HREA) | Lighting, Electric | United States | North America |
| Harrisonburg Electric Commission (HEC) | Lighting, Electric | United States | North America |
| Hart Electric Membership Corporation | Lighting, Electric | United States | North America |
| Harter's Fox Valley Disposal | Sanitation | United States | North America |
| Hartford Steam Company (HSC) | Steam, Chilled Water | United States | North America |
| Hastings Utilities | Water, Sewer, Lighting, Electric, Natural Gas | United States | North America |
| Haven Power | Electric | United Kingdom | Europe |
| Hawai'i Electric Light | Electric | United States | North America |
| Hawaii Gas | Water, Propane, Natural Gas | United States | North America |
| Hawaiian Electric (Business) | Water, Sewer, Electric | United States | North America |
| Hawaiian Electric (Consumer) | Electric | United States | North America |
| Haywood Electric Membership Corporation (EMC) | Lighting, Electric | United States | North America |
| Hazleton PA City Authority | Water | United States | North America |
| Hearst Power Distribution Co. Ltd. | Water, Sewer, Electric | Canada | North America |
| Heart of Texas Electric Cooperative Incorporated | Lighting, Electric | United States | North America |
| Heartland Power Cooperative | Electric | United States | North America |
| Heartland Rural Electric Cooperative | Lighting, Electric | United States | North America |
| Heartland Rural Electric Membership Corporation | Lighting, Electric | United States | North America |
| Heber Light and Power Company | Electric | United States | North America |
| Helen Sahkoverkko Oy | District Heat, Electric, Chilled Water | Finland | Europe |
| Helix Water District | Water, Irrigation | United States | North America |
| Hendersonville Utility District | Water, Irrigation, Sewer | United States | North America |
| Hendricks Power Cooperative | Lighting, Electric | United States | North America |
| Henrico County | Water, Sewer, Sanitation | United States | North America |
| Henry County Water Authority | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Hera S.p.A | Water, Sewer, Sanitation, Electric, Natural Gas | Italy | Europe |
| Hermiston Energy Services | Television, Electric | United States | North America |
| Hernando County Utilities Department | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Herriman City Water Department | Water | United States | North America |
| Hi Desert Water District CA | Water, Sewer | United States | North America |
| Hiawatha Water Department | Water, Sewer | United States | North America |
| High Plains Power Inc | Electric | United States | North America |
| High West Energy | Electric | United States | North America |
| Highland Sewer and Water Authority | Water, Irrigation, Sewer | United States | North America |
| Highlands Ranch Metro District | Water, Irrigation, Sewer, Sanitation, Lighting | United States | North America |
| Highline Electric Association | Electric | United States | North America |
| Highline Water District | Water, Irrigation | United States | North America |
| Hilco Electric Cooperative Incorporated | Lighting, Electric | United States | North America |
| Hill County Electric Cooperative | Electric | United States | North America |
| Hill Petroleum | Natural Gas | United States | North America |
| Hillsboro | Water | United States | North America |
| Hingham Municipal Lighting Plant | Lighting, Electric | United States | North America |
| Hixson Utility District | Water, Irrigation, Sewer, Sanitation | United States | North America |
| HMW Special Utility District | Water | United States | North America |
| Holland Board of Public Works (B.P.W) | Water, Sewer, Sanitation, Lighting, Electric, Internet | United States | North America |
| Holland Charter Township | Water, Sewer | United States | North America |
| Holly Springs | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Holly Springs Utility Department (HSUD) | Water, Sewer, Lighting, Electric | United States | North America |
| Holmes-Wayne Electric Cooperative Incorporated | Lighting, Electric | United States | North America |
| Holston Electric Cooperative | Lighting, Electric, Internet | United States | North America |
| Holy Cross Energy | Lighting, Electric | United States | North America |
| Holyoke Gas and Electric | Water, Sewer, Lighting, Electric, Internet, Natural Gas | United States | North America |
| Holyoke Water Works | Water | United States | North America |
| Home Wood Disposal Services Incorporated | Sanitation, Natural Gas | United States | North America |
| Homefield Energy | Lighting, Electric | United States | North America |
| Homeland Park Water | Water, Sewer | United States | North America |
| Homer Electric Association | Lighting, Electric | United States | North America |
| Hong Kong Electric Co. | Electric | Hong Kong | Asia |
| Honolulu Board of Water Supply (BWS) | Water, Irrigation, Sewer | United States | North America |
| Hoover City | Water, Sewer | United States | North America |
| Hope Gas | Natural Gas | United States | North America |
| Horry Electric Cooperative | Lighting, Electric | United States | North America |
| Horry Telephone Cooperative (HTC) | Landline Phone, Television, Internet | United States | North America |
| Horsham Water & Sewer Authority | Water, Irrigation, Sewer | United States | North America |
| Houston Public Works | Water, Irrigation, Sewer, Sanitation, Electric | United States | North America |
| Howard County | Water, Sewer, Natural Gas | United States | North America |
| Howard Greeley Rural Public Power District | Electric | United States | North America |
| Howell Oregon Electric Cooperative | Lighting, Electric | United States | North America |
| Hubli Electricity Supply Company (HESCOM) | Electric | India | Asia |
| Hudson Energy | Lighting, Electric, Natural Gas | United States | North America |
| Hudson Light and Power | Electric | United States | North America |
| Hudson's Bay Company Canada | Natural Gas | Canada | North America |
| Humboldt Utilities | Water, Sewer, Sanitation, Electric, Natural Gas | United States | North America |
| Huntsville Utilities | Water, Irrigation, Sewer, Lighting, Sanitation, Electric, Natural Gas | United States | North America |
| Huntsville Water Utilities | Water, Sewer | United States | North America |
| Hutchinson Utilities Commission | Water, Sewer, Electric, Natural Gas | United States | North America |
| Hyannis Water System | Water, Sewer, Sanitation | United States | North America |
| Hydro One | Sanitation, Lighting, Electric | Canada | North America |
| Hydro Ottawa | Electric | Canada | North America |
| Hydro Québec | Water, Lighting, Electric | Canada | North America |
| Hydro Westmount | Electric | Canada | North America |
| Iberdrola | Electric | Germany | Europe |
| IBERDROLA CLIENTES | Electric, Natural Gas | Spain | Europe |
| Iberdrola Clientes Sau | Electric | Spain | Europe |
| Idaho Power | Other Service Type, Lighting, Electric | United States | North America |
| IGI Resources Inc | Natural Gas | United States | North America |
| Illinois Electric Cooperative | Electric | United States | North America |
| Imperial Irrigation District (IID) | Lighting, Electric | United States | North America |
| Incline Village General Improvement District Public Works | Water, Irrigation, Sewer | United States | North America |
| Independence Township | Water, Sewer, Sanitation | United States | North America |
| Indian Electric Cooperative (IEC) | Lighting, Electric | United States | North America |
| Indian River County | Water, Sewer | United States | North America |
| Industrielle Werke Basel | Natural Gas | Switzerland | Europe |
| Infinite Energy | Lighting, Electric, Natural Gas | United States | North America |
| Inframark | Water, Sewer, Sanitation | United States | North America |
| Infuse Energy | Electric | United States | North America |
| Inland Waste Solutions LLC | Sanitation | United States | North America |
| Inman-Campobello Water District (ICWD) | Water, Irrigation, Sewer | United States | North America |
| Innogy | Electric | Poland | Europe |
| InnPower | Water, Sewer, Electric | Canada | North America |
| Inter County Energy Cooperative | Lighting, Electric | United States | North America |
| Intercounty Electric Cooperative Association (IECA) | Lighting, Electric | United States | North America |
| Intermountain Gas Company (IGC) | Natural Gas | United States | North America |
| Interstate Gas Supply | Lighting, Electric, Natural Gas | United States | North America |
| Iowa Lakes Electric Cooperative (ILEC) | Electric | United States | North America |
| Iredell Water Corporation | Water | United States | North America |
| Iren Acqua | Water, Sewer, Electric, Natural Gas | Italy | Europe |
| Irish Water | Water, Sewer | Ireland | Europe |
| Irvine Ranch Water District | Water, Irrigation, Sewer | United States | North America |
| Irving Energy | Water, Other Service Type, Electric, Propane, Natural Gas, Fuel Oil | United States | North America |
| Irwin Electric Membership Corporation (EMC) | Lighting, Electric | United States | North America |
| Isle of Wight | Water, Sewer | United States | North America |
| Itasca-Mantrap Cooperative Services (IM) | Electric | United States | North America |
| Jacana Energy | Electric | Australia | Oceania |
| Jackson County Public Water Supply District (JCPWSD) | Water, Sewer | United States | North America |
| Jackson County Public Water Supply District Number 2 | Water | United States | North America |
| Jackson County Rural Electric Membership Cooperative (REMC) | Lighting, Electric, Internet | United States | North America |
| Jackson Electric Cooperative | Lighting, Electric | United States | North America |
| Jackson Electric Cooperative | Lighting, Electric | United States | North America |
| Jackson Electric Membership Corporation (EMC) | Lighting, Electric | United States | North America |
| Jackson Energy Authority | Water, Sewer, Television, Lighting, Sanitation, Electric, Internet, Natural Gas, Propane | United States | North America |
| Jackson Energy Cooperative | Lighting, Electric | United States | North America |
| Jackson Purchase Energy Corporation | Lighting, Electric | United States | North America |
| Jacksonville Energy Authority (JEA) | Water, Irrigation, Sewer, Other Service Type, Lighting, Electric, Natural Gas | United States | North America |
| Jamestown Water Department | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Jasper County Rural Electric Membership Corporation | Lighting, Electric | United States | North America |
| Jasper Waterworks and Sewer Board | Water, Sewer | United States | North America |
| Jeff Davis Electric Co-Op | Lighting, Electric | United States | North America |
| Jefferson City Utilities | Water, Sewer | United States | North America |
| Jefferson Cocke County Gas Utility District | Natural Gas | United States | North America |
| Jefferson County Public Utility District (PUD) | Water, Lighting, Electric | United States | North America |
| Jefferson Energy Cooperative | Lighting, Electric | United States | North America |
| Jefferson Parish Department of Water | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Jefferson Utilities | Water, Sewer, Electric | United States | North America |
| JeffersonWaterAndSewerDistrict | Water, Sewer | United States | North America |
| Jemez Mountains Electric Cooperative | Lighting, Electric | United States | North America |
| Jenks Public Works Authority (JPWA) | Water, Sewer | United States | North America |
| Jersey Central Power & Light (First Energy) | Lighting, Electric | United States | North America |
| Jersey City Municipal Utilities Authority | Water, Sewer, Sanitation | United States | North America |
| Jessamine South Elkhorn Water District | Water, Sewer | United States | North America |
| Joe Wheeler Electric Membership Corporation (EMC) | Sanitation, Lighting, Electric, Internet, Natural Gas | United States | North America |
| John's Disposal Service Inc. | Sanitation | United States | North America |
| Johnson County REMC (JCREMC) | Lighting, Electric | United States | North America |
| Johnson County Special Utility District | Water, Sewer, Sanitation | United States | North America |
| Johnson County Wastewater | Water, Sewer | United States | North America |
| Johnston County Public Utilities | Water, Irrigation, Sewer | United States | North America |
| Joint Municipal Water and Sewer Commission | Water, Sewer | United States | North America |
| Jonah Water Special Utility District | Water, Sewer, Sanitation | United States | North America |
| Jones-Onslow Electric Membership Corporation | Lighting, Electric | United States | North America |
| Jordan Valley Water Conservancy District | Water, Sewer, Electric | United States | North America |
| Jump River Electric Cooperative | Electric | United States | North America |
| Juneau Utility Commission | Electric | United States | North America |
| Jurupa Community Services District | Water, Sewer, Natural Gas | United States | North America |
| Just Energy | Lighting, Electric, Natural Gas | United States | North America |
| Jysk Energi | Electric | Denmark | Europe |
| Kandiyohi Power Cooperative | Water, Sewer, Electric | United States | North America |
| Kankakee Valley Rural Electric Membership Corporation (REMC) | Electric | United States | North America |
| Kansas City Board of Public Utilities (BPU) | Water, Irrigation, Sewer, Sanitation, Lighting, Electric | United States | North America |
| Kansas Gas Service | Water, Sewer, Electric, Natural Gas | United States | North America |
| Karnes Electric Cooperative | Lighting, Electric | United States | North America |
| Kauai County Water Department | Water | United States | North America |
| Kauai Island Utility Cooperative | Lighting, Electric | United States | North America |
| Kaukauna Utilities | Water, Sewer, Lighting, Electric | United States | North America |
| Kay Electric Cooperative | Electric | United States | North America |
| KC Electric Association Incorporated | Electric | United States | North America |
| KC Water | Water, Sewer | United States | North America |
| KEHAG Energiehandel GmbH | Electric | Germany | Europe |
| Kelag | Electric | Austria | Europe |
| KEM Electric Cooperative | Electric | United States | North America |
| Kenergy | Lighting, Electric | United States | North America |
| Kennebunk Kennebunkport Water ME | Water, Irrigation | United States | North America |
| Kennebunk Light & Power District | Lighting, Electric | United States | North America |
| Kentucky Power Company | Lighting, Electric | United States | North America |
| Kentucky Utilities (KU) | Water, Sanitation, Lighting, Electric, Natural Gas | United States | North America |
| Kerrville Public Utility Board | Lighting, Electric | United States | North America |
| Keys Energy Services | Lighting, Electric | United States | North America |
| Keystone Cooperative Inc | Fuel Oil, Propane | United States | North America |
| Kiamichi Electric Cooperative Inc | Lighting, Electric | United States | North America |
| King County Water District | Water | United States | North America |
| King County Water District 20 | Water, Irrigation, Lighting | United States | North America |
| Kings Manor Municipal Utility District | Water, Sewer | United States | North America |
| Kingsbridge Municipal Utility District | Water, Sewer | United States | North America |
| Kissimmee Utility Authority (KUA) | Sewer, Sanitation, Lighting, Electric | United States | North America |
| Kit Carson Electric Cooperative | Lighting, Electric | United States | North America |
| Kitchener Utilities | Water, Sewer, Other Service Type, Sanitation, Electric, Natural Gas | Canada | North America |
| Kitchener-Wilmot Hydro | Water, Sewer, Electric, Natural Gas | Canada | North America |
| Kittitas Public Utility District | Electric | United States | North America |
| Kleenheat | Natural Gas | Australia | Oceania |
| Kleinwood Municipal Utility District | Water, Sewer | United States | North America |
| Klickitat Public Utility District (PUD) | Water, Sewer, Lighting, Electric | United States | North America |
| Knox Chapman Utility District | Water, Sewer | United States | North America |
| Knox Energy Cooperative Association Incorporated | Natural Gas | United States | North America |
| Knoxville Utilities Board (KUB) | Water, Sewer, Lighting, Electric, Natural Gas | United States | North America |
| Kootenai Electric Cooperative | Lighting, Electric | United States | North America |
| Kosciusko County Rural Elecric Membership Corporation (REMC) | Lighting, Electric | United States | North America |
| Kuttigen | Water, Sewer | Switzerland | Europe |
| La Follette Utilities | Water, Irrigation, Sewer, Sanitation, Lighting, Electric | United States | North America |
| La Plata Electric Association Incorporated (LPEA) | Lighting, Electric | United States | North America |
| Laclede Electric Cooperative | Lighting, Electric | United States | North America |
| Lafayette Utilities System (LUS) | Water, Irrigation, Sewer, Sanitation, Lighting, Electric | United States | North America |
| LaGrange County Rural Electric Membership Cooperative | Electric | United States | North America |
| Laguna Beach County Water District | Water | United States | North America |
| Lake Apopka Natural Gas District | Natural Gas | United States | North America |
| Lake Conroe Hills Municipal Utility District | Water, Sewer | United States | North America |
| Lake Country Power | Lighting, Electric | United States | North America |
| Lake County | Water, Irrigation, Sewer | United States | North America |
| Lake Geneva Utility Commission | Water, Sewer | United States | North America |
| Lake Grove Water District | Water | United States | North America |
| Lake Havasu City | Water, Irrigation, Sewer | United States | North America |
| Lake Municipal Utility District | Water, Sewer | United States | North America |
| Lake Region Electric Cooperative | Lighting, Electric | United States | North America |
| Lake Region Electric Cooperative (LREC) | Lighting, Electric | United States | North America |
| Lakehaven Water & Sewer District | Water, Sewer, Lighting, Natural Gas | United States | North America |
| Lakeland Power | Electric | Canada | North America |
| Lakeview Light And Power (LLP) | Electric | United States | North America |
| Lakewood Township Municipal Utilities Authority | Water, Sewer | United States | North America |
| Lancaster Area Sewer Authority (LASA) | Water, Sewer | United States | North America |
| Lancaster County Natural Gas Authority | Natural Gas | United States | North America |
| Lane Electric Cooperative | Lighting, Electric | United States | North America |
| Lansing Board of Water and Light | Water, Irrigation, Sewer, Lighting, Steam, Electric | United States | North America |
| Las Vegas Valley Water District | Water | United States | North America |
| Lassen Municipal Utility District | Lighting, Electric | United States | North America |
| Laurel County Water District No 2 | Water, Sewer | United States | North America |
| Laurens Commission Of Public Works | Water, Sewer, Lighting, Electric, Natural Gas | United States | North America |
| Laurens Electric Cooperative (LEC) | Lighting, Electric | United States | North America |
| LaVeine Sanitation Service | Sanitation | United States | North America |
| Lawrenceburg Municipal Utilities | Water, Irrigation, Sewer, Electric | United States | North America |
| Lawrenceburg Utility Systems (LUS) | Water, Sewer, Lighting, Sanitation, Electric, Natural Gas | United States | North America |
| Layton City | Water, Sewer, Lighting | United States | North America |
| Lea County Electric Cooperative Inc | Lighting, Electric | United States | North America |
| Leavenworth Waterworks Department | Water, Sewer, Sanitation | United States | North America |
| Lee County Electric Cooperative | Lighting, Electric | United States | North America |
| Lee County Utilities | Water, Irrigation, Sewer | United States | North America |
| Lehigh County Authority | Water, Sewer | United States | North America |
| Leipziger Wasserwerke | Water, Sewer | Germany | Europe |
| Leitchfield Water | Water, Sewer, Sanitation, Natural Gas | United States | North America |
| Lenoir City Utilities Board (LCUB) | Water, Irrigation, Sewer, Sanitation, Lighting, Electric, Natural Gas | United States | North America |
| Lewis County Rural Electric Cooperative | Lighting, Electric | United States | North America |
| Lewisburg Electric System | Lighting, Electric | United States | North America |
| Lexington Electric System | Lighting, Electric | United States | North America |
| Lexington Fayette County Government | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| Lexington Utilities | Water, Sewer, Sanitation, Electric, Natural Gas | United States | North America |
| Liander | Telecom, Electric, Natural Gas | Netherlands | Europe |
| Liberty Utilities | Water, Irrigation, Sewer, Lighting, Sanitation, Electric, Natural Gas | United States | North America |
| Licking Valley Rural Electric Cooperative Corporation | Lighting, Electric | United States | North America |
| Lighthouse Electric Cooperative Inc | Lighting, Electric | United States | North America |
| Lincoln City Water Department | Water, Sewer, Sanitation | United States | North America |
| Lincoln Electric System (LES) | Lighting, Electric | United States | North America |
| Linda County Water District | Water, Sewer | United States | North America |
| Lindale Rural Water Supply | Water, Sewer, Sanitation | United States | North America |
| Linn County Rural Electric Cooperative | Electric | United States | North America |
| Little Chute | Water, Sewer | United States | North America |
| Little Ocmulgee Electric Membership Corporation | Electric | United States | North America |
| Little River Electric Cooperative Inc | Lighting, Electric | United States | North America |
| Little Sumter Service Area | Water, Sewer | United States | North America |
| Littleton Electric Light and Water Departments (LELWD) | Water, Lighting, Electric | United States | North America |
| Littleton Water and Light Department | Water, Electric | United States | North America |
| Lodi Utilities | Water, Irrigation, Sewer, Lighting, Electric | United States | North America |
| Logan County Electric Cooperative | Lighting, Electric | United States | North America |
| Logansport Municipal Utilities | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| London Hydro | Water, Sewer, Lighting, Electric, Natural Gas | Canada | North America |
| London Utility Commission | Water, Irrigation, Sewer, Sanitation, Lighting | United States | North America |
| Long Island Waste Services | Sanitation | United States | North America |
| Lorain-Medina Rural Electric Cooperative | Lighting, Electric | United States | North America |
| Los Angeles County Waterworks Districts | Water, Irrigation | United States | North America |
| Los Angeles Department of Water and Power (LADWP) | Water, Irrigation, Sewer, Lighting, Sanitation, Electric | United States | North America |
| Loudoun Water | Water, Sewer | United States | North America |
| Louisville Gas and Electric (LGE) | Water, Lighting, Electric, Natural Gas | United States | North America |
| Louisville Water | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Loup Power District | Lighting, Electric | United States | North America |
| Lowell Light And Power | Electric | United States | North America |
| Lower Rio Grande Public Water Works Authority | Water | United States | North America |
| Lower Valley Energy | Lighting, Electric, Natural Gas | United States | North America |
| Lower Valley Water District | Water, Sewer, Sanitation | United States | North America |
| Loxahatchee River District | Sewer, Electric | United States | North America |
| Luma Energy LLC | Lighting, Electric | Puerto Rico | North America |
| Lumbee River Electric Membership Corporation (EMC) | Lighting, Electric | United States | North America |
| Lumen Technologies | Landline Phone, Internet | United States | North America |
| Luminus (Business) | Electric, Natural Gas | Belgium | Europe |
| Lumius | Electric, Natural Gas | Czech Republic | Europe |
| LUS Fiber | Landline Phone, Television, Internet | United States | North America |
| Lynnwood | Water, Irrigation, Sewer | United States | North America |
| Lyntegar Electric Cooperative | Electric | United States | North America |
| Lyse Energi | District Heat, Electric, Internet, Natural Gas | Norway | Europe |
| M. Marlon Ivy and Associates Inc. | Water, Sewer, Sanitation | United States | North America |
| Macon Electric Cooperative | Water, Lighting, Electric | United States | North America |
| Macon Municipal Utilities | Water, Irrigation, Sewer, Electric, Natural Gas | United States | North America |
| Macon Water Authority | Water, Irrigation, Sewer | United States | North America |
| Madhya Pradesh Paschim Kshetra Vidyut Vitaran Company | Electric | India | Asia |
| Madison County Water Department | Water | United States | North America |
| Madison Gas and Electric (MGE) | Lighting, Electric, Natural Gas | United States | North America |
| Magic Valley Electric Cooperative | Lighting, Electric | United States | North America |
| Magnolia Water Utility Operating Company LLC | Water, Sewer | United States | North America |
| Maharashtra State Electricity Distribution Company (MahaVitaran) | Electric | India | Asia |
| MAIN Energie | Electric, Natural Gas | Netherlands | Europe |
| Maine Natural Gas | Natural Gas | United States | North America |
| Maine Water | Water, Sewer | United States | North America |
| Mainova | Water, Electric, Natural Gas | Germany | Europe |
| Mallory Valley Utility District | Water, Irrigation, Sewer | United States | North America |
| Mammoth Community Water District | Water, Sewer | United States | North America |
| Manatee County | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Mangalore Electricity Supply Company (MESCOM) | Electric | India | Asia |
| Manitoba Hydro | Water, Lighting, Electric, Natural Gas | Canada | North America |
| Manitowoc Public Utilities | Water, Sewer, Lighting, Electric, Internet | United States | North America |
| Manor Township Joint Municipal Authority | Water | United States | North America |
| Mansfield Energy | Natural Gas | United States | North America |
| Mansfield Municipal Electric Department | Lighting, Electric | United States | North America |
| Mantua Township Municipal Utilities Authority | Water, Sewer | United States | North America |
| Maquoketa Valley Electric Cooperative | Electric | United States | North America |
| Marietta Power and Water | Water, Irrigation, Sewer, Lighting, Sanitation, Electric | United States | North America |
| Marin Municipal Water District | Water | United States | North America |
| Marin Sanitary Service | Sanitation | United States | North America |
| Marina Coast Water District | Water, Irrigation, Sewer | United States | North America |
| Marion Municipal Utilities | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Marlboro Electric Cooperative Inc | Lighting, Electric | United States | North America |
| Marquette Board of Light & Power | Water, Sewer, Lighting, Electric | United States | North America |
| Marshall Dekalb Electric Cooperative | Lighting, Electric | United States | North America |
| Marshall Municipal Utilities | Water, Sewer, Lighting, Electric | United States | North America |
| Marshalltown Water Works | Water, Sewer, Sanitation | United States | North America |
| Marshfield Utilities | Water, Sewer, Lighting, Electric | United States | North America |
| Martin County | Water, Irrigation, Sewer | United States | North America |
| Mason County Public Utility District (PUD) 3 | Lighting, Electric | United States | North America |
| Mason Creek Utility District (MCUD) | Water, Sewer | United States | North America |
| Matanuska Electric Association (MEA) | Electric | United States | North America |
| Maui Electric | Electric | United States | North America |
| Mayfield Electric and Water Systems | Water, Sewer, Lighting, Electric | United States | North America |
| Mc Lean Electric Cooperative (MEC) | Electric | United States | North America |
| McAllen Public Utility | Water, Irrigation, Sewer, Sanitation | United States | North America |
| McCandless Township Sanitary Authority (MTSA) | Water, Sewer | United States | North America |
| McCook Public Power District | Lighting, Electric | United States | North America |
| McCreary County Water District | Water, Sewer | United States | North America |
| McDonough Power Cooperative | Lighting, Electric | United States | North America |
| McDougall Energy Inc | Fuel Oil | Canada | North America |
| McKenzie County | Water | United States | North America |
| McKenzie Electric Cooperative | Lighting, Electric | United States | North America |
| McMinnville Electric System (MES) | Lighting, Electric | United States | North America |
| McMinnville Water and Light | Water, Sewer, Lighting, Electric | United States | North America |
| McPherson Board of Public Utilities | Water, Sewer, Lighting, Electric | United States | North America |
| Meade County (RECC) | Lighting, Electric | United States | North America |
| Mecklenburg Electric Cooperative | Lighting, Electric | United States | North America |
| Medford Electric Utility | Water, Sewer, Sanitation, Electric | United States | North America |
| Medford Water Commission | Water | United States | North America |
| Mediacom | Landline Phone, Television, Internet | United States | North America |
| Mediacom Business | Landline Phone, Television, Internet | United States | North America |
| Medina County | Water, Sewer | United States | North America |
| Medina Electric Cooperative | Lighting, Electric | United States | North America |
| Meeker Cooperative Light And Power Association | Electric | United States | North America |
| Meistro Energie | Electric | Germany | Europe |
| Memphis Light | Water, Irrigation, Sewer, Sanitation, Lighting, Electric, Natural Gas | United States | North America |
| Mena Water Utilities | Water, Sewer | United States | North America |
| Merced Irrigation District (MID) | Electric | United States | North America |
| Mercury Energy | Electric | New Zealand | Oceania |
| Meridian Charter Township | Water, Irrigation, Sewer | United States | North America |
| Meridian Energy | Electric | New Zealand | Oceania |
| Meriwether Lewis Electric Cooperative | Lighting, Electric | United States | North America |
| Mesa Water District | Water, Sewer, Sanitation, Electric | United States | North America |
| Metergy Solutions Inc | Water, Electric, Natural Gas | Canada | North America |
| Metering Online | Water, Sewer, Electric | South Africa | Africa |
| MeterNet | Water, Sewer | United States | North America |
| Metro Water Services | Water, Irrigation, Sewer | United States | North America |
| Metropolitan District Commission | Water, Irrigation, Sewer | United States | North America |
| Metropolitan Edison (Met-Ed) (First Energy) | Water, Sewer, Lighting, Electric | United States | North America |
| Metropolitan St. Louis Sewer District | Water, Irrigation, Sewer | United States | North America |
| Metropolitan St. Louis Sewer District | Water, Sewer | United States | North America |
| Metropolitan Telecommunications Corporation (MetTel) | Telecom, Landline Phone, Internet | United States | North America |
| Metropolitan Utilities District | Water, Sewer, Sanitation, Natural Gas | United States | North America |
| Metropolitan Water District | Water, Sewer | United States | North America |
| Miami-Dade County Water & Sewer Department | Water, Irrigation, Sewer | United States | North America |
| Michigan Gas And Electric | Natural Gas | United States | North America |
| Michigan Gas Utilities | Natural Gas | United States | North America |
| Mid Peninsula Water District | Water | United States | North America |
| Mid South Synergy Incorporated | Water, Lighting, Electric | United States | North America |
| Mid State Electric Cooperative Incorporated | Lighting, Electric | United States | North America |
| Mid State Energy | Natural Gas | United States | North America |
| Mid West Electric Incorporated | Lighting, Electric | United States | North America |
| Mid-Carolina Electric Cooperative (MCEC) | Lighting, Electric | United States | North America |
| MidAmerican Energy Company | Lighting, Electric, Natural Gas | United States | North America |
| MidAmerican Energy Services | Lighting, Electric, Natural Gas | United States | North America |
| Midco | Telecom, Landline Phone, Television, Internet | United States | North America |
| Middle Tennessee Electric | Lighting, Electric | United States | North America |
| Middle Tennessee Electric Membership Corporation (MTEMC) | Lighting, Electric | United States | North America |
| Middle Tennessee Natural Gas Utility District | Water, Lighting, Electric, Natural Gas | United States | North America |
| Middlesex Township | Water, Sewer | United States | North America |
| Middlesex Water Company | Water, Irrigation, Sewer | United States | North America |
| Middleton Electric Light Department | Electric | United States | North America |
| Midland Power Cooperative | Lighting, Electric | United States | North America |
| Midland Power Utility Corporation | Electric | Canada | North America |
| Midway Sewer District | Sewer | United States | North America |
| MidWest Electric Cooperative Corporation | Lighting, Electric | United States | North America |
| Midwest Energy | Lighting, Electric, Natural Gas | United States | North America |
| MidWest Energy & Communications | Lighting, Electric | United States | North America |
| Midwest Natural Gas | Natural Gas | United States | North America |
| Midwest Natural Gas Inc | Natural Gas | United States | North America |
| MiEnergy Cooperative | Electric | United States | North America |
| Milano Gas E Luce | Electric, Natural Gas | Italy | Europe |
| Milcrofton Utility District | Water | United States | North America |
| Milford Municipal Utilities | Water, Sewer, Lighting, Electric | United States | North America |
| Mille Lacs Energy Cooperative (MLEC) | Electric | United States | North America |
| Minnesota Energy Resources | Electric, Natural Gas | United States | North America |
| Minnesota Power | Lighting, Electric | United States | North America |
| Minnesota Valley Cooperative Light And Power Association (MV) | Lighting, Electric | United States | North America |
| Minnesota Valley Electric Cooperative (MVEC) | Lighting, Electric | United States | North America |
| Minol Direct | Water, Sewer, Sanitation | United States | North America |
| Mishawaka Utilities | Water, Irrigation, Sewer, Lighting, Sanitation, Electric | United States | North America |
| Mission Bend Municipal Utility District | Water, Sewer | United States | North America |
| Mission Springs Water District | Water, Sewer | United States | North America |
| Mission Valley Power | Electric | United States | North America |
| Mississippi County Electric Cooperative Inc | Electric | United States | North America |
| Mississippi Power | Lighting, Electric | United States | North America |
| Missoula Electric Cooperative Incorporated | Lighting, Electric | United States | North America |
| Mitchell | Propane, Natural Gas | United States | North America |
| Mitchell Water System Inc | Water | United States | North America |
| MJM Electric Cooperative Inc | Lighting, Electric | United States | North America |
| MM | Water, Sewer | Italy | Europe |
| Mobile Area Water & Sewer System | Water, Irrigation, Sewer | United States | North America |
| Modern Corporation - Recycling & Disposal Services | Sanitation | United States | North America |
| Modern Electric Water Company | Water, Lighting, Electric | United States | North America |
| Modesto Irrigation District | Lighting, Electric | United States | North America |
| Mohave Electric Cooperative | Lighting, Electric | United States | North America |
| Mohawk Valley Water Authority | Water, Sewer | United States | North America |
| Momentum Energy | Lighting, Electric | Australia | Oceania |
| Mon Power (First Energy) | Lighting, Electric | United States | North America |
| Mon Valley Sewage Authority | Water, Sewer | United States | North America |
| Monroe County Electric Co-Operative Inc | Electric | United States | North America |
| Monroe County Water Authority | Water | United States | North America |
| Monroe Township Utility Department | Water, Irrigation, Sewer | United States | North America |
| Monroeville Municipal Authority | Water, Sewer, Sanitation | United States | North America |
| Montana Energie-Handel GmbH | Electric | Germany | Europe |
| Montana-Dakota Utilities Company (MDU) | Lighting, Electric, Natural Gas | United States | North America |
| Monte Vista Water District | Water | United States | North America |
| Montecito Water District | Water | United States | North America |
| Monterey One Water | Water, Sewer, Sanitation | United States | North America |
| Montgomery Co Regional Sewer District | Water, Sewer | United States | North America |
| Montgomery County | Water, Irrigation, Sewer | United States | North America |
| Montgomery County Municipal Utility District | Water, Sewer, Sanitation | United States | North America |
| Montgomery Water Works & Sanitary Sewer Board | Water, Irrigation, Sanitation | United States | North America |
| Monticello Utilities Commission | Water, Sewer | United States | North America |
| Monticelloga | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| Mora Municipal Utilities | Water, Sewer, Electric | United States | North America |
| Moreau-Grand Electric Cooperative | Electric | United States | North America |
| Morehead City | Water, Sewer, Sanitation | United States | North America |
| Morgan County Rural Electric Association | Electric | United States | North America |
| Morgantown Utility Board (MUB) | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Morristown Utility Systems (MUS) | Water, Landline Phone, Sewer, Television, Lighting, Sanitation, Electric, Internet | United States | North America |
| Morrisville Water and Light | Electric | United States | North America |
| Moulton Niguel Water District | Water, Irrigation, Sewer | United States | North America |
| Mount Carmel Public Utility Company | Lighting, Electric, Natural Gas | United States | North America |
| Mount Houston Road Municipal Utilities District | Water, Sewer, Lighting | United States | North America |
| Mount Pleasant Waterworks | Water, Irrigation, Sewer | United States | North America |
| Mountain City | Lighting, Electric | United States | North America |
| Mountain Parks Electric Inc | Electric | United States | North America |
| Mountain View Electric Association Incorporated | Lighting, Electric | United States | North America |
| Mountaineer Gas Company | Natural Gas | United States | North America |
| Mountrail-Williams Electric Cooperative (MWEC) | Electric | United States | North America |
| Mt Morris Township | Water, Irrigation, Sewer | United States | North America |
| Muhlenberg Township Authority | Water, Sewer | United States | North America |
| Mukilteo Water and Wastewater District | Water, Irrigation, Sewer | United States | North America |
| Muncie Sanitary District | Water, Sewer, Sanitation | United States | North America |
| Municipal Authority Borough of Lewistown | Water | United States | North America |
| Municipal Authority of Westmoreland County | Water, Sewer | United States | North America |
| Municipal Commission Of Boonville | Water, Sewer, Lighting, Electric | United States | North America |
| Municipal Services Commission Of The City Of New Castle | Water, Electric | United States | North America |
| Municipal Utilities Board of the City of Albertville | Water, Sewer, Lighting, Electric | United States | North America |
| Municipality Of West Milton | Water, Sewer, Sanitation | United States | North America |
| Murray Electric System | Electric, Internet | United States | North America |
| Murreys Disposal Inc | Sanitation | United States | North America |
| Muscatine Power and Water | Water, Sewer, Television, Lighting, Electric, Internet | United States | North America |
| Mustang Special Utility District | Water, Sewer, Sanitation | United States | North America |
| Myoma Dunes Water Company | Water | United States | North America |
| Narragansett Bay Commission | Water, Sewer, Electric, Natural Gas | United States | North America |
| NASA Services | Sanitation, Natural Gas | United States | North America |
| Nashville Electric Service (NES) | Lighting, Electric | United States | North America |
| Nassau-Amelia Utilities | Water, Irrigation, Sewer | United States | North America |
| National Choice Energy | Electric | United States | North America |
| National Fuel | Natural Gas | United States | North America |
| National Grid | Lighting, Electric, Internet, Natural Gas | United States | North America |
| Naturgy | Electric, Natural Gas | Spain | Europe |
| Navarro County Electric Cooperative | Lighting, Electric | United States | North America |
| Navopache Electric Cooperative (NEC) | Lighting, Electric | United States | North America |
| Nebraska Public Power District | Lighting, Electric | United States | North America |
| NEC Co-op Energy | Electric | United States | North America |
| Nergie | Water, Electric, Natural Gas | Germany | Europe |
| Nespelem Valley Electric | Electric | United States | North America |
| Nevada Irrigation District | Water | United States | North America |
| New Castle County | Water, Sewer | United States | North America |
| New Hampshire Electric Cooperative | Lighting, Electric | United States | North America |
| New Jersey American Water | Water, Sewer | United States | North America |
| New Jersey Natural Gas | Natural Gas | United States | North America |
| New London Utilities | Water, Sewer, Electric | United States | North America |
| New Mexico Gas Company | Electric, Natural Gas | United States | North America |
| New Prague Utilities Commission | Water, Sewer, Lighting, Electric | United States | North America |
| New Richmond Utilities | Water, Irrigation, Sewer, Lighting, Electric | United States | North America |
| New River Light and Power | Lighting, Electric | United States | North America |
| New York City Water Board | Water, Sewer, Steam | United States | North America |
| New York City Water Board AMR | Water | United States | North America |
| New York Gas and Electric | Electric, Natural Gas | United States | North America |
| New York Power Authority | Electric | United States | North America |
| New York State Electric and Gas (NYSEG) | Lighting, Electric, Natural Gas | United States | North America |
| Newfoundland And Labrador Hydro | Lighting, Electric | Canada | North America |
| Newfoundland Power | Lighting, Electric | Canada | North America |
| Newmarket Hydro | Water, Sewer, Electric | Canada | North America |
| Newnan Utilities | Water, Irrigation, Sewer, Lighting, Electric | United States | North America |
| Newport Municipal Utility District | Water, Sewer | United States | North America |
| Newport News Waterworks | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Newport Utilities (NU) | Water, Sewer, Television, Lighting, Electric | United States | North America |
| Newton County Water and Sewerage Authority (NCWSA) | Water, Sewer | United States | North America |
| Newtown Artesian Water Company | Water, Irrigation | United States | North America |
| NewWave Communications | Television, Internet | United States | North America |
| Next Business Energy | Electric | Australia | Oceania |
| Nextera Energy Services | Water, Lighting, Electric, Natural Gas | United States | North America |
| NextEra Energy Services Midwest | Natural Gas | United States | North America |
| NHA BE Wasuco JSC Cong Ty Co Phan Cap Nuoc | Water, Sewer | Vietnam | Asia |
| Niagara on-the-Lake Hydro | Water, Sewer, Electric | Canada | North America |
| Niagara Peninsula Energy (NPEI) | Lighting, Electric | Canada | North America |
| Nicor Gas | Natural Gas | United States | North America |
| NieuweStroom | Electric, Natural Gas | Netherlands | Europe |
| Nine Star Connect | Water, Lighting, Electric | United States | North America |
| Ninobe Energia | Natural Gas | Spain | Europe |
| Nitti Sanitation Inc | Sanitation | United States | North America |
| Noble Remc | Electric | United States | North America |
| Nodak Electric Cooperative | Lighting, Electric | United States | North America |
| Nolin Rural Electric Cooperative | Lighting, Electric | United States | North America |
| Nordic Solar HoldCo LLC | Electric | United States | North America |
| Norlys | Electric, Natural Gas | Denmark | Europe |
| Norris Electric Cooperative | Lighting, Electric | United States | North America |
| Norris Public Power District | Lighting, Electric | United States | North America |
| Norristown Municipal Waste Authority | Sewer | United States | North America |
| North Alabama Electric Cooperative | Lighting, Electric, Internet | United States | North America |
| North Alabama Gas District | Natural Gas | United States | North America |
| North Alamo Water Supply Corporation (NAWSC) | Water, Sewer | United States | North America |
| North Arkansas Electric Cooperative (NAEC) | Lighting, Electric | United States | North America |
| North Austin Municipal Utilities District | Water, Sewer | United States | North America |
| North Bay Hydro Community Power | Other Service Type, Lighting, Electric | Canada | North America |
| North Branch Water And Light | Water, Irrigation, Sewer, Electric | United States | North America |
| North Central Electric Cooperative | Electric | United States | North America |
| North Central Electric Cooperative | Lighting, Electric | United States | North America |
| North Central Missouri Electric Cooperative Inc | Electric | United States | North America |
| North Central Public Power District | Electric | United States | North America |
| North Coast County Water District | Water | United States | North America |
| North East Mississippi Electric Power Association | Lighting, Sanitation, Electric, Internet | United States | North America |
| North East Oklahoma Electric Cooperative | Electric | United States | North America |
| North Garland County Regional Water District | Water | United States | North America |
| North Georgia Electric Membership Corporation (EMC) | Lighting, Electric | United States | North America |
| North Grenville | Water | Canada | North America |
| North Huntingdon Township Municipal Authority | Sewer | United States | North America |
| North Itasca Electric | Electric | United States | North America |
| North Kansas City Utilities | Water | United States | North America |
| North Little Rock (NLR) Electric | Sanitation, Lighting, Electric | United States | North America |
| North Marin Water District | Water | United States | North America |
| North Marshall Water District | Water | United States | North America |
| North Park Public Utility District | Water, Sewer | United States | North America |
| North Pecos Water and Sanitation District | Water, Irrigation, Sewer | United States | North America |
| North Penn Water Authority (NPWA) | Water, Sewer | United States | North America |
| North Plains Electric Cooperative Inc | Lighting, Electric | United States | North America |
| North Port | Water, Irrigation, Sewer, Sanitation | United States | North America |
| North Shore Gas | Electric, Natural Gas | United States | North America |
| North Wales Water Authority | Water, Irrigation, Sewer | United States | North America |
| North Washington Street Water And Sanitation District | Water, Sewer | United States | North America |
| North Weld County Water District | Water | United States | North America |
| North West REC | Electric | United States | North America |
| Northampton Borough Municipal Authority | Water | United States | North America |
| Northampton Bucks County Municipal Authority | Water, Sewer | United States | North America |
| Northcentral Electric Power Association | Lighting, Electric | United States | North America |
| Northeast Knox Utility District | Water | United States | North America |
| Northeast Ohio Natural Gas Corporation | Natural Gas | United States | North America |
| Northeastern Rural Electric Membership Corporation (REMC) | Lighting, Electric | United States | North America |
| Northern Cambria Municipal Authority | Water, Sanitation | United States | North America |
| Northern Indiana Public Service Company (NIPSCO) | Lighting, Electric, Natural Gas | United States | North America |
| Northern Kentucky Water District | Water | United States | North America |
| Northern Natural Gas | Natural Gas | United States | North America |
| Northern Neck Electric Cooperative | Lighting, Electric | United States | North America |
| Northern Plains Electric Cooperative | Lighting, Electric | United States | North America |
| Northern Virginia Electric Cooperative (NOVEC) | Lighting, Electric, Natural Gas | United States | North America |
| Northern Wasco County People’s Utility District | Television, Lighting, Electric | United States | North America |
| Northland Utilities | Lighting, Electric | Canada | North America |
| Northshore Utility District | Water, Irrigation, Sewer, Sanitation, Lighting | United States | North America |
| Northwest Harris County MUD No. 15 | Water, Sewer, Sanitation | United States | North America |
| Northwest Harris County Municipal Utility District 5 | Water, Irrigation, Sewer | United States | North America |
| Northwest Harris County Municipal Utility District 9 | Water, Sewer | United States | North America |
| Northwest Harris County Municipal Utility District No 10 | Water, Sewer | United States | North America |
| Northwest Park Municipal Utility District (MUD) | Water, Sewer, Sanitation | United States | North America |
| Northwest Rural Public Power District | Electric | United States | North America |
| NorthWest Territories Power Corporation | Electric | Canada | North America |
| Northwestern Electric Cooperative (NWEC) | Lighting, Electric | United States | North America |
| NorthWestern Energy | Water, Irrigation, Sewer, Lighting, Electric, Natural Gas | United States | North America |
| Northwestern Rural Electric Cooperative | Electric | United States | North America |
| Northwestern Water & Sewer District | Water, Irrigation, Sewer | United States | North America |
| Nottingham Country Municipal Utility District | Water, Sewer | United States | North America |
| Nova Energy | Electric, Natural Gas | New Zealand | Oceania |
| Nova Scotia Power | Landline Phone, Sewer, Lighting, Electric | Canada | North America |
| NPower Business Solutions | Electric, Natural Gas | United Kingdom | Europe |
| NRG Energy | Water, Lighting, Steam, Electric, Chilled Water, Natural Gas, Fuel Oil | United States | North America |
| NRGI | Electric | Denmark | Europe |
| Nueces Electric Cooperative | Lighting, Electric | United States | North America |
| Nuon | Electric, Natural Gas | Netherlands | Europe |
| NV Energy | Water, Telecom, Other Service Type, Lighting, Electric, Natural Gas | United States | North America |
| NW Natural (NWN) | Electric, Natural Gas | United States | North America |
| Oahe Electric | Lighting, Electric | United States | North America |
| Oak Ridge Utility District (ORUD) | Electric, Natural Gas | United States | North America |
| Oakdale Electric Cooperative | Electric | United States | North America |
| Oakland County | Water, Sewer, Sanitation | United States | North America |
| Oakmont Water Authority | Water, Irrigation, Sewer | United States | North America |
| Oakville Hydro | Water, Lighting, Electric, Natural Gas | Canada | North America |
| Ocmulgee Electric Membership Corporation | Lighting, Electric | United States | North America |
| Oconee County Utility Department | Water, Irrigation, Sewer | United States | North America |
| Oconee Electric Member Corporation | Electric | United States | North America |
| Oconto Electric Cooperative | Electric | United States | North America |
| Octopus Energy | Electric, Natural Gas | United Kingdom | Europe |
| Ohio Edison (First Energy) | Lighting, Electric | United States | North America |
| Ohio Gas Company | Natural Gas | United States | North America |
| Ohio Valley Gas | Natural Gas | United States | North America |
| Oildale Mutual Water Company | Water, Irrigation | United States | North America |
| Okaloosa County Water & Sewer | Water, Sewer, Sanitation | United States | North America |
| Okaloosa Gas District | Natural Gas | United States | North America |
| Okanogan County Public Utility District (PUD) | Lighting, Electric | United States | North America |
| Okeechobee Utility Authority | Water, Sewer | United States | North America |
| Okefenoke Rural Electric Membership Corporation | Lighting, Electric | United States | North America |
| Oklahoma Electric Cooperative (OEC) | Lighting, Electric, Internet | United States | North America |
| Oklahoma Gas & Electric (OG&E) | Lighting, Electric | United States | North America |
| Oklahoma Natural Gas | Lighting, Natural Gas | United States | North America |
| Oldenburgisch Ostfriesischer Wasserverband | Water, Sewer | Germany | Europe |
| Olivenhain Municipal Water District | Water, Irrigation, Sewer | United States | North America |
| Olympic View Water And Sewer District | Water, Sewer | United States | North America |
| Omaha Public Power District (OPPD) | Sanitation, Lighting, Electric | United States | North America |
| Oneonta Utilities Board | Water, Sewer, Natural Gas | United States | North America |
| OnePoint Technologies | Water, Sewer | United States | North America |
| Onondaga County Water Authority | Water, Sewer | United States | North America |
| Onslow Water and Sewer Authority (ONWASA) | Water, Irrigation, Sewer | United States | North America |
| Ontario Municipal Utilities Company | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Ontonagon Rural Electrification Association (REA) | Electric | United States | North America |
| Opelika Power Services | Lighting, Sanitation, Electric | United States | North America |
| Optimum | Landline Phone, Television, Internet | United States | North America |
| Optimum Business (formerly SuddenLink) | Landline Phone, Television, Internet | United States | North America |
| Opus Energy | Electric, Natural Gas | United Kingdom | Europe |
| Orange & Rockland | Lighting, Electric, Natural Gas | United States | North America |
| Orange County Government | Water, Irrigation, Sewer, Sanitation, Electric | United States | North America |
| Orange County REMC and Orange County Fiber | Electric | United States | North America |
| Orange Water and Sewer Authority (OWASA) | Water, Irrigation, Sewer | United States | North America |
| Orangeville Hydro | Water, Sewer, Electric | Canada | North America |
| Orchard Dale Water District | Water | United States | North America |
| Oregon City | Water, Sewer, Sanitation | United States | North America |
| Oregon Trail Electric Cooperative | Lighting, Electric | United States | North America |
| Origin Energy | Electric, Natural Gas, Propane | Australia | Oceania |
| Orillia Power Corporation | Water, Sewer, Lighting, Electric | Canada | North America |
| Orlando Utilities Commission (OUC) | Water, Irrigation, Sewer, Sanitation, Lighting, Electric, Chilled Water | United States | North America |
| Oro Valley Water Utilities | Water, Irrigation, Sewer | United States | North America |
| Orrville Utilities | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| Orsted | Electric, Natural Gas | Denmark | Europe |
| Osceola Water Works | Water | United States | North America |
| Oshawa Public Utilities Commission (OPUC) | Lighting, Electric | Canada | North America |
| Otay Water District | Water, Sewer | United States | North America |
| Otero County Electric Cooperative | Sanitation, Lighting, Electric | United States | North America |
| Otsego Electric Cooperative | Electric | United States | North America |
| Ottawa River Power Corp | Lighting, Electric | Canada | North America |
| Otter Tail Power Company | Lighting, Electric, Natural Gas | United States | North America |
| Overton Power District No 5 | Lighting, Electric | United States | North America |
| Owatonna Public Utilities | Water, Sewer, Lighting, Electric, Natural Gas | United States | North America |
| Owen Electric Cooperative | Sanitation, Lighting, Electric | United States | North America |
| Owensboro Municipal Utilities | Water, Sanitation, Lighting, Electric, Internet | United States | North America |
| Oxford Water Works & Sewer Board | Water, Sewer | United States | North America |
| Ozark Border Electric Cooperative | Water, Sewer, Lighting, Electric | United States | North America |
| Ozarks Electric Cooperative | Lighting, Electric | United States | North America |
| Ozarks Go | Landline Phone, Television, Internet | United States | North America |
| Pacific County Public Utility District (PUD) | Electric | United States | North America |
| Pacific Gas and Electric (PG&E) | Lighting, Electric, Natural Gas | United States | North America |
| Pacific Northern Gas Limited (PNG) | Natural Gas | Canada | North America |
| Pacific Power | Sanitation, Lighting, Electric | United States | North America |
| Pacific Summit Energy LLC | Natural Gas | United States | North America |
| Pacific Waste | Sanitation | United States | North America |
| Padre Dam Municipal Water District | Water, Irrigation, Sewer | United States | North America |
| Paducah Power System (PPS) | Lighting, Electric | United States | North America |
| Paducah Water | Water, Sewer, Sanitation | United States | North America |
| Palatka Gas Authority | Water, Sewer, Sanitation, Natural Gas | United States | North America |
| Palm Beach County | Water, Sewer, Sanitation | United States | North America |
| Palmdale Water District | Water | United States | North America |
| Palmetto Electric Cooperative Inc. | Lighting, Electric | United States | North America |
| Panama City Beach | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Panola-Harrison Electric Cooperative | Lighting, Electric | United States | North America |
| Paraco Gas | Propane, Natural Gas | United States | North America |
| Paris Board of Public Utilities | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| Park Electric Cooperative Inc. | Electric | United States | North America |
| Parker Water and Sanitation District | Water, Sewer | United States | North America |
| Parkersburg Utility Board | Water, Sewer | United States | North America |
| Parkland Light & Water Company | Water, Lighting, Electric | United States | North America |
| Parkway Utility District | Water, Sewer | United States | North America |
| Pasco County | Water, Irrigation, Sewer | United States | North America |
| PASCOAG Utility District | Water, Electric | United States | North America |
| Passaic Valley Water Commission | Water, Sewer | United States | North America |
| Paulding County | Water, Irrigation, Sewer, Lighting | United States | North America |
| Paulding Putnam Electric Cooperative | Lighting, Electric | United States | North America |
| Pea River Electric Cooperative | Lighting, Electric | United States | North America |
| Peabody Municipal Light Plant | Lighting, Electric | United States | North America |
| Peace River Electric Membership Cooperative | Lighting, Electric | United States | North America |
| Pearl River Valley Electric Power Association | Lighting, Electric | United States | North America |
| Pecan Grove Municipal Utility District | Water, Sewer | United States | North America |
| Pedernales Electric Cooperative (PEC) | Lighting, Electric | United States | North America |
| Pee Dee Electric Cooperative | Lighting, Electric | United States | North America |
| Pee Dee Electric Membership Corporation | Lighting, Electric | United States | North America |
| Pemiscot-Dunklin Electric Cooperative Inc | Lighting, Electric, Internet | United States | North America |
| Pend Oreille County Public Utility District (PUD) | Lighting, Electric | United States | North America |
| Penelec (First Energy) | Lighting, Electric | United States | North America |
| Peninsula Energy Services Company (PESCO Energy) | Natural Gas | United States | North America |
| Peninsula Light Company | Water, Electric | United States | North America |
| Penn Power (First Energy) | Lighting, Electric | United States | North America |
| Penn Waste Incorporated | Sanitation | United States | North America |
| Pennichuck | Water | United States | North America |
| Pennyrile Electric | Lighting, Electric | United States | North America |
| Pensacola Energy | Sanitation, Lighting, Natural Gas | United States | North America |
| People's Electric Cooperative | Lighting, Electric | United States | North America |
| People's Energy Cooperative | Lighting, Electric | United States | North America |
| Peoples | Landline Phone, Other Service Type, Internet, Natural Gas | United States | North America |
| Peoples Gas | Electric, Natural Gas | United States | North America |
| Pepco | Lighting, Electric | United States | North America |
| Perennial Public Power District | Electric | United States | North America |
| Peterborough Utilities Group | Water, Sewer, Other Service Type, Lighting, Electric | Canada | North America |
| Petit Jean Electric Cooperative | Lighting, Electric | United States | North America |
| Philadelphia Electric Company (PECO) | Lighting, Electric, Natural Gas | United States | North America |
| Philadelphia Gas Works (PGW) | Water, Sewer, Natural Gas | United States | North America |
| Pickwick Electric Cooperative (PEC) | Lighting, Electric | United States | North America |
| Piedmont Electric Membership Corporation | Lighting, Electric | United States | North America |
| Piedmont Natural Gas | Natural Gas | United States | North America |
| Pierce County | Water, Sewer, Electric | United States | North America |
| Pike Natural Gas Company | Natural Gas | United States | North America |
| Pinellas County Utilities | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Pinergy | Electric | Ireland | Europe |
| Pineville Communication Systems and Electric Company | Lighting, Electric | United States | North America |
| Pioneer Electric Cooperative | Electric | United States | North America |
| Pioneer Electric Cooperative Inc. | Electric | United States | North America |
| Pioneer Energy Management | Water, Sewer, Electric, Natural Gas | United States | North America |
| Pitt And Greene Electric Membership Corporation | Lighting, Electric | United States | North America |
| Pittsburgh Water & Sewer Authority | Water, Sewer, Sanitation | United States | North America |
| Plainfield Charter Township | Water, Sewer | United States | North America |
| Plainfield Municipal Utilities Authority | Water, Sewer, Sanitation | United States | North America |
| Plaquemines Parish Water Department | Water, Sewer, Sanitation | United States | North America |
| Plateau Electric Cooperative | Lighting, Electric | United States | North America |
| Platte Clay Electric Cooperative | Lighting, Electric | United States | North America |
| Platte County Regional Sewer District | Water, Sewer | United States | North America |
| Plenitude | Lighting, Electric, Natural Gas | Italy | Europe |
| Plumas-Sierra Rural Electric Cooperative (PSREC) | Lighting, Electric | United States | North America |
| Plymouth Utilities | Water, Sewer, Electric | United States | North America |
| Pocomoke City | Water, Sewer | United States | North America |
| Pointe Coupee Electric Membership Corporation | Electric | United States | North America |
| Polk County Utilities | Water, Irrigation, Sewer | United States | North America |
| Polk-Burnett Electric Cooperative | Lighting, Electric | United States | North America |
| Polska Grupa Energetyczna S.A. | Electric | Poland | Europe |
| Polskie Górnictwo Naftowe i Gazownictwo (PGNIG) | Natural Gas | Poland | Europe |
| Ponderosa Forest Utility District | Water, Sewer | United States | North America |
| Port Huron Township | Water, Sewer | United States | North America |
| Portage County | Water, Sewer | United States | North America |
| Portland General Electric (PGE) | Water, Sewer, Lighting, Electric | United States | North America |
| Portland Water District | Water, Sewer | United States | North America |
| Potomac Edison (First Energy) | Lighting, Electric | United States | North America |
| Poudre Valley Rural Electric Association (REA) | Lighting, Electric | United States | North America |
| Powder River Energy Corporation | Lighting, Electric | United States | North America |
| Powdersville Water | Water, Irrigation, Sewer | United States | North America |
| Powell Valley Electric Cooperative (PVEC) | Lighting, Electric | United States | North America |
| Powell-Clinch Utility District | Natural Gas | United States | North America |
| Power New Mexico (PNM) | District Heat, Lighting, Electric, Natural Gas | United States | North America |
| PowerNext | Electric | United States | North America |
| PowerNI | Electric | United Kingdom | Europe |
| Powershop | Electric | Australia | Oceania |
| Pozitive Energy | Electric, Natural Gas | United Kingdom | Europe |
| PPL Electric Utilities | Lighting, Electric | United States | North America |
| Pražská Energetika (PRE) | Electric | Czech Republic | Europe |
| Pragoplyn (PGP) | Natural Gas | Czech Republic | Europe |
| Prairie Land Electric Cooperative Incorporated | Lighting, Electric | United States | North America |
| Presque Isle Electric And Gas MI | Electric, Natural Gas | United States | North America |
| Presque Isle Utilities District | Water, Sewer | United States | North America |
| Pride Disposal Company | Sanitation | United States | North America |
| Primagaz | Propane | France | Europe |
| Primeo Energie | Electric | France | Europe |
| Primeo Energie | Electric | Switzerland | Europe |
| Prince George Electric Cooperative | Electric | United States | North America |
| Prince William County Service Authority | Water, Sewer | United States | North America |
| Princeton Public Utilities | Water, Sewer, Lighting, Electric | United States | North America |
| ProEnergy Partners | Natural Gas | United States | North America |
| Providence Water Rhode Island | Water, Electric | United States | North America |
| Provision Power And Gas LLC | Electric, Natural Gas | United States | North America |
| Public Power Corporation | Electric | Greece | Europe |
| Public Service Enterprise Group - Long Island (PSE&G) | Lighting, Electric | United States | North America |
| Public Service Enterprise Group - New Jersey (PSE&G) | Other Service Type, Lighting, Electric, Natural Gas | United States | North America |
| Public Utility District No. 1 of Skamania County | Lighting, Electric | United States | North America |
| PUC Services Incorporated | Water, Sewer, Lighting, Electric | Canada | North America |
| Puget Sound Energy (PSE) | Other Service Type, Lighting, Electric, Natural Gas | United States | North America |
| Pulaski Electric System (PES) | Lighting, Electric, Internet | United States | North America |
| Pulse Power | Electric | United States | North America |
| Putnam Public Service District (PSD) | Water, Sewer | United States | North America |
| Puur Water And Natuur | Water | Netherlands | Europe |
| PWC | Water, Irrigation, Sewer, Lighting, Electric | United States | North America |
| Quadlogic Meters Canada Inc | Water, Sewer, Electric | Canada | North America |
| Quadvest Water and Sewer Utility | Water, Sewer | United States | North America |
| Quarles Petroleum Inc | Fuel Oil, Natural Gas | United States | North America |
| Queensland Urban Utilities | Water, Sewer, Sanitation | Australia | Oceania |
| Régie du Syndicat Electrique Intercommunal du Pays Chartrain | Electric | France | Europe |
| Raccoon Valley Electric Cooperative | Electric | United States | North America |
| Raft River Electric | Electric | United States | North America |
| Raleigh Water District | Water | United States | North America |
| Ralls County Electric Cooperative | Lighting, Electric | United States | North America |
| Rancho California Water District | Water, Irrigation, Sewer | United States | North America |
| Randolph Electric Membership Corporation | Lighting, Electric | United States | North America |
| Range | Internet | United States | North America |
| Rappahannock Electric Cooperative (REC) | Lighting, Electric | United States | North America |
| Raritan Township Municipal Utilities Authority | Sewer | United States | North America |
| RayleEMC | Lighting, Electric | United States | North America |
| Raytown Water Company | Water | United States | North America |
| RCN Telecom Services LLC | Landline Phone, Television, Internet | United States | North America |
| Reading Municipal Light Department (RMLD) | Lighting, Electric | United States | North America |
| Recology Butte Colusa Counties | Sanitation | United States | North America |
| Recology CleanScapes | Sanitation | United States | North America |
| Recology Humboldt County | Sanitation | United States | North America |
| Red River Valley Rural Electric | Lighting, Electric | United States | North America |
| Reedsburg Utility Commision | Water, Landline Phone, Sewer, Television, Electric, Internet | United States | North America |
| Region of Peel | Water, Sewer, Electric | United States | North America |
| Regional Utilities of Walton County | Water, Sewer | United States | North America |
| Reid Road Municipal Utility District No 2 | Water, Sewer | United States | North America |
| Reknica | Water, Sewer | Poland | Europe |
| Reliant Energy | Lighting, Electric, Natural Gas | United States | North America |
| Remington Municipal Utility District | Water, Sewer | United States | North America |
| Renfrew Hydro | Electric | Canada | North America |
| Republic Services | Water, Sanitation, Electric, Natural Gas | United States | North America |
| Resort TV Cable | Television, Internet | United States | North America |
| Reynoldsburg Water Department | Water, Sewer, Sanitation | United States | North America |
| Rhein Energie | Water, Electric | Germany | Europe |
| Rheinisch-Westfalische Wasserwerksgesellschaft | Water | Germany | Europe |
| Rhode Island Energy | Lighting, Electric, Natural Gas | United States | North America |
| Rhythm Energy LLC | Electric | United States | North America |
| Rialto Water Services | Water, Sewer | United States | North America |
| Rice Lake Utilities | Water, Sewer, Electric | United States | North America |
| Richey Road Municipal Utility District | Water, Sewer | United States | North America |
| Richmond Power and Light | Telecom, Lighting, Electric | United States | North America |
| Richmond Sanitary District | Water, Sewer, Electric | United States | North America |
| Richmond Utilities | Water, Sewer, Natural Gas | United States | North America |
| Rideau St. Lawrence Distribution Inc. | Water, Sewer, Electric | Canada | North America |
| Rincon del Diablo Municipal Water District | Water | United States | North America |
| Rio Grande Electric Cooperative | Lighting, Electric | United States | North America |
| River Falls Municipal Utilities | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| River Parish Disposal | Sanitation, Electric | United States | North America |
| River Ridge | Water, Electric | United States | North America |
| Riverland Energy Cooperative | Lighting, Electric | United States | North America |
| Riviera Utilities | Water, Irrigation, Sewer, Television, Lighting, Sanitation, Electric, Internet, Natural Gas | United States | North America |
| Rizzo Environmental Services | Sanitation, Natural Gas | United States | North America |
| Roanoke Rapids Sanitary District | Water, Irrigation, Sewer | United States | North America |
| Roats Water System | Water | United States | North America |
| Robstown Utility Systems | Sewer, Sanitation, Lighting, Electric, Natural Gas | United States | North America |
| Rochelle Municipal Utilities (RMU) | Water, Electric, Internet | United States | North America |
| Rochester Gas and Electric (RG&E) | Lighting, Electric, Natural Gas | United States | North America |
| Rochester Public Utilities (RPU) | Water, Irrigation, Sewer, Lighting, Electric | United States | North America |
| Rock Energy Cooperative | Lighting, Electric, Natural Gas | United States | North America |
| Rock River Water Reclamation District | Water, Sewer, Sanitation | United States | North America |
| Rockdale Water Resources | Water, Irrigation, Sewer | United States | North America |
| Rockett Special Utility District | Water, Sewer, Sanitation | United States | North America |
| Rockingham County | Water, Sewer | United States | North America |
| Rockwood Water People Utility District | Water | United States | North America |
| Rocky Mountain Power | Water, Sewer, Lighting, Electric | United States | North America |
| Rogers Water Utilities (RWU) | Water, Irrigation, Sewer | United States | North America |
| Rogue Valley Sewer Services | Water, Sewer | United States | North America |
| Rolling Hills Electric Cooperative | Electric | United States | North America |
| Romande Energie | Water, Sewer, Electric | Switzerland | Europe |
| Roosevelt Public Power District | Electric | United States | North America |
| Rosamond Community Services District | Water, Sewer | United States | North America |
| Roseau Electric Cooperative | Lighting, Electric, Internet | United States | North America |
| Ross County Water Company | Water | United States | North America |
| Roughrider Electric Cooperative | Water, Sewer, Lighting, Electric | United States | North America |
| Rowland Water District | Water, Irrigation, Sanitation | United States | North America |
| Royse City | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Rubicon Global LLC | Sanitation | United States | North America |
| Rubio Cañon Land & Water Association | Water | United States | North America |
| Rumpke Waste and Recycling | Sanitation | United States | North America |
| Runestone Electric Association (REA) | Electric | United States | North America |
| Rural Electric Convenience Cooperative | Water, Electric | United States | North America |
| Rural Electric Cooperative Inc | Lighting, Electric | United States | North America |
| Rural Lorain County Water Authority (RLCWA) | Water | United States | North America |
| RURALBAND | Internet | United States | North America |
| RushShelby Energy | Other Service Type, Lighting, Electric | United States | North America |
| Rusk County Electric Cooperative Inc | Lighting, Electric | United States | North America |
| Russellville Whitesburg Utility District | Water, Sewer | United States | North America |
| Rutherford Electric Membership Corporation | Lighting, Electric | United States | North America |
| Sacramento Municipal Utility District (SMUD) | Lighting, Electric | United States | North America |
| Sacramento Suburban Water District | Water, Sewer | United States | North America |
| Saint John Energy | Water, Other Service Type, Lighting, Electric, Natural Gas | Canada | North America |
| Saint Paul Regional Water Services | Water, Irrigation, Sewer, Sanitation, Lighting | United States | North America |
| Salem Electric | Electric | United States | North America |
| Salt Creek Sanitary District | Sewer | United States | North America |
| Salt Lake City Public Utilities | Water, Irrigation, Sewer, Sanitation, Lighting, Electric | United States | North America |
| Salt River Electric | Lighting, Electric | United States | North America |
| Salt River Project (SRP) | Lighting, Electric | United States | North America |
| Sam Houston Electric Cooperative | Lighting, Electric | United States | North America |
| San Antonio Water System | Water, Irrigation, Sewer, Sanitation | United States | North America |
| San Bernard Electric Cooperative (SBEC) | Lighting, Electric | United States | North America |
| San Diego Gas & Electric (SDGE) | Lighting, Electric, Natural Gas | United States | North America |
| San Dieguito Water District | Water, Sewer | United States | North America |
| San Francisco Public Utilities | Water, Irrigation, Sewer, Sanitation, Electric | United States | North America |
| San Gabriel Valley Water Company CA | Water, Electric, Natural Gas | United States | North America |
| San Isabel Electric Association (SIEA) | Lighting, Electric | United States | North America |
| San Jose Water Company | Water, Irrigation | United States | North America |
| San Juan Water District | Water, Irrigation | United States | North America |
| San Lorenzo Valley Water District | Water | United States | North America |
| San Luis Valley Rural Electric Cooperative (REC) | Lighting, Electric | United States | North America |
| San Miguel Power Association | Electric | United States | North America |
| San Patricio Electric Cooperative (SPEC) | Lighting, Electric | United States | North America |
| Sand Mountain Electric Cooperative | Lighting, Electric | United States | North America |
| Sandy City Public Utilities | Water, Lighting | United States | North America |
| Sangre De Cristo Electric Association | Water, Electric | United States | North America |
| Santa Fe Irrigation District | Water | United States | North America |
| Santa Margarita Water District | Water, Irrigation, Sewer, Lighting | United States | North America |
| Santee Cooper | Lighting, Electric | United States | North America |
| Santee Electric Cooperative (SEC) Incorporated | Lighting, Electric | United States | North America |
| Sarasota County | Water, Irrigation, Sewer | United States | North America |
| Sardis Water Association | Water | United States | North America |
| Sask Energy | Electric, Natural Gas | Canada | North America |
| Sask Power | Lighting, Electric, Natural Gas | Canada | North America |
| Sauk Center Public Utilities | Water, Sewer, Electric | United States | North America |
| Saur | Water, Sewer | France | Europe |
| Sawnee Electric Membership Corporation (EMC) | Lighting, Electric | United States | North America |
| SCANA Energy | Natural Gas | United States | North America |
| Scholt Energy Control | Electric, Natural Gas | Netherlands | Europe |
| Schuylkill County Municipal Authority | Water, Sewer | United States | North America |
| Scioto County Sanitary | Water, Sewer | United States | North America |
| Scott County Public Service Authority | Water, Sewer | United States | North America |
| Scottish and Southern Electric (SSE) | Electric, Natural Gas | United Kingdom | Europe |
| Scottish Power | Electric, Natural Gas | United Kingdom | Europe |
| Scotts Valley Water District | Water | United States | North America |
| SCV Water | Water, Irrigation | United States | North America |
| Seacoast Utility Authority | Water, Irrigation, Sewer | United States | North America |
| SECO Energy | Lighting, Electric | United States | North America |
| Security Water And Sanitation District | Water, Sewer | United States | North America |
| Sedalia Water Department MO | Water, Sewer | United States | North America |
| Sedgwick County Electric Cooperative | Electric | United States | North America |
| SEFE Energy Limited | Electric, Natural Gas | United Kingdom | Europe |
| Semco Energy Gas Company | Natural Gas | United States | North America |
| Seminole County | Water, Irrigation, Sewer | United States | North America |
| Sequachee Valley Electric Cooperative (SVEC) | Lighting, Electric | United States | North America |
| Services industriels de Geneva (SIG) | Electric | Switzerland | Europe |
| Services Industriels De Lausanne | Water, Sewer, Electric, Natural Gas | Switzerland | Europe |
| Servicios De Agua Y Drenaje De Monterrey I.P.D. | Water, Sewer, Sanitation | Mexico | North America |
| Sevier County Electric System | Lighting, Electric | United States | North America |
| Sevier County Utility District | Natural Gas | United States | North America |
| Sewerage and Water Board of New Orleans | Water, Sewer, Sanitation | United States | North America |
| Shakopee Public Utilities Commission | Water, Irrigation, Sewer, Lighting, Sanitation, Electric | United States | North America |
| Sharp Energy | Propane, Natural Gas | United States | North America |
| Shawano Municipal Utilities | Water, Sewer, Electric | United States | North America |
| Sheffield Utilities | Water, Lighting, Electric | United States | North America |
| Shelby Township | Water, Irrigation, Sewer | United States | North America |
| Shelbyville Power Water & Sewerage Systems | Water, Sewer, Lighting, Electric | United States | North America |
| Shelbyville Water And Sewer | Water, Irrigation, Sewer | United States | North America |
| Shell Energy | Lighting, Electric | United States | North America |
| Shell Energy | Lighting, Electric, Natural Gas | Australia | Oceania |
| Shell Energy Connect | Water, Sewer, Electric, Natural Gas | United States | North America |
| Shell Energy North America Canada | Natural Gas | Canada | North America |
| Shell Energy Retail Limited | Electric, Natural Gas | United Kingdom | Europe |
| Shell Energy Solutions | Electric, Natural Gas | United Kingdom | Europe |
| Shenandoah Valley Electric Cooperative | Lighting, Electric | United States | North America |
| Sheridan Electric Cooperative Inc | Electric | United States | North America |
| ShoppersDrug Mart Inc. | Natural Gas | Canada | North America |
| SiEnergy | Natural Gas | United States | North America |
| Sierra Electric Cooperative | Electric | United States | North America |
| Sierra Vista Department of Public Works | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| Sikeston Board of Municipal Utilities | Water, Irrigation, Sewer, Lighting, Electric | United States | North America |
| Silver Creek Water Corporation | Water | United States | North America |
| Silver Spring Township Authority | Sewer | United States | North America |
| Silverdale Water District | Water, Irrigation, Lighting | United States | North America |
| Simply Energy | Electric | Australia | Oceania |
| Singing River Electric Power Association | Lighting, Electric | United States | North America |
| Single Digits | Television, Internet | United States | North America |
| Sioux Falls Utilities | Water, Irrigation, Sewer, Lighting, Electric | United States | North America |
| Slash Pine Electric Membership Corporation | Lighting, Electric | United States | North America |
| Smartest Energy | Lighting, Electric, Natural Gas | United Kingdom | Europe |
| Smithfield | Water, Sewer, Electric | United States | North America |
| Snapping Shoals Electric Membership Corporation (SSEMC) | Lighting, Electric | United States | North America |
| Snohomish County Public Utility District (PUD) No. 1 | Water, Other Service Type, Lighting, Electric | United States | North America |
| Snyder Energy Marketing | Natural Gas | United States | North America |
| Societa Metropolitana Acque Torino | Water, Sewer | Italy | Europe |
| Socorro Electric Cooperative | Lighting, Electric | United States | North America |
| Somerset Rural Electric Cooperative Incorporated | Lighting, Electric | United States | North America |
| Sonoma County Resource Recovery LLC | Sanitation | United States | North America |
| Sonoma Garbage Collectors‚Äã | Sanitation | United States | North America |
| Soquel Creek Water District | Water | United States | North America |
| Sosnowieckie Wodociagi Spolka Akcyjna | Water, Sewer | Poland | Europe |
| Source For Business | Water, Sewer | United Kingdom | Europe |
| South Adams County Water & Sanitation District | Water, Irrigation, Sewer, Sanitation | United States | North America |
| South Alabama Electric Cooperative | Lighting, Electric | United States | North America |
| South Brunswick | Water, Irrigation, Sewer | United States | North America |
| South Central Indiana REMC | Lighting, Electric | United States | North America |
| South Central Power Company | Lighting, Electric | United States | North America |
| South Central Public Power District (SCPPD) | Lighting, Electric | United States | North America |
| South Coast Water District | Water, Irrigation, Sewer | United States | North America |
| South County Water Department | Water | United States | North America |
| South East Missouri Electric Cooperative | Lighting, Electric | United States | North America |
| South East Water | Water, Irrigation, Sewer, Sanitation, Natural Gas | Australia | Oceania |
| South Harrison Water Corporation | Water, Irrigation | United States | North America |
| South Highway Water District | Water | United States | North America |
| South Jersey Gas | Natural Gas | United States | North America |
| South Kentucky Rural Electric Cooperative Corporation | Lighting, Electric | United States | North America |
| South Lebanon Township | Water, Sewer | United States | North America |
| South Louisiana Electric Cooperative Association (SLECA) | Lighting, Electric | United States | North America |
| South Norwalk Electric and Water | Water, Electric | United States | North America |
| South Placer Municipal Utility | Water, Sewer | United States | North America |
| South Plains Electric Cooperative | Lighting, Electric | United States | North America |
| South Point Utilities | Sewer | United States | North America |
| South River Electric Membership Corporation | Lighting, Electric | United States | North America |
| South San Francisco Scavenger Company | Sanitation | United States | North America |
| South Tahoe Public Utility District | Water, Sewer | United States | North America |
| South West Water Business | Water, Sewer | United Kingdom | Europe |
| South West Water Company | Water, Sewer, Natural Gas | United States | North America |
| South Whitehall Township | Water, Sewer, Sanitation | United States | North America |
| Southaven Mississippi | Water, Sewer, Sanitation | United States | North America |
| Southeast Colorado Power Association Cooperative | Lighting, Electric | United States | North America |
| Southeast Gas | Natural Gas | United States | North America |
| Southeast Indiana Rural Electric Membership Corporation | Electric | United States | North America |
| Southeast Morris County Municipal Utilities Authority | Water, Irrigation | United States | North America |
| Southeastern Electric Cooperative Inc | Electric | United States | North America |
| Southeastern Electric Cooperative Inc | Lighting, Electric | United States | North America |
| SouthEastern Illinois Electric Cooperative Inc | Lighting, Electric | United States | North America |
| Southern California Edison (SCE) | Lighting, Electric, Natural Gas | United States | North America |
| Southern California Gas Company (SoCalGas) | Electric, Natural Gas | United States | North America |
| Southern Company | Electric | United States | North America |
| Southern Connecticut Gas | Natural Gas | United States | North America |
| Southern Indiana Power | Lighting, Electric | United States | North America |
| Southern Maryland Electric Cooperative (SMECO) | Water, Sewer, Lighting, Electric, Natural Gas | United States | North America |
| Southern Monroe Water Authority | Water | United States | North America |
| Southern Montgomery County Municipal Utility District | Water, Irrigation, Sewer | United States | North America |
| Southern Pine Electric | Lighting, Electric | United States | North America |
| Southern Pine Electric Cooperative | Lighting, Electric | United States | North America |
| Southern Pioneer Electric Company | Lighting, Electric | United States | North America |
| Southern Power District | Electric | United States | North America |
| Southern Rivers Energy | Lighting, Electric | United States | North America |
| Southlake Utilities Incorporated | Water, Sewer | United States | North America |
| Southside Electric Cooperative | Lighting, Electric | United States | North America |
| Southwest Electric | Lighting, Electric | United States | North America |
| Southwest Gas | Electric, Natural Gas | United States | North America |
| Southwest Licking Community Water & Sewer District | Water, Sewer | United States | North America |
| Southwest Louisiana Electric Membership Corporation (SLEMCO) | Sanitation, Lighting, Electric | United States | North America |
| Southwest Suburban Sewer District | Water, Sewer, Lighting | United States | North America |
| Southwest Tennessee Electric Membership Corporation | Lighting, Electric | United States | North America |
| SouthWest Water Users Association | Water | United States | North America |
| Southwestern Electric Cooperative | Lighting, Electric | United States | North America |
| Southwestern Electric Cooperative Inc | Lighting, Electric | United States | North America |
| SP Group | Electric | Singapore | Asia |
| SP Group | Water, Sewer, Sanitation, Electric | Singapore | Asia |
| Spanaway Water Company | Water | United States | North America |
| Spark Energy | Lighting, Electric, Natural Gas | United States | North America |
| Sparklight Business | Landline Phone, Television, Internet | United States | North America |
| Spartanburg Water | Water, Irrigation, Sewer | United States | North America |
| Spencer Municipal Utilities (SMU) | Water, Sewer, Sanitation, Electric | United States | North America |
| Spire | Propane, Natural Gas | United States | North America |
| Spokane County Environmental Services | Water, Sewer | United States | North America |
| Spoon River Electric Cooperative | Electric | United States | North America |
| Spotsylvania County | Water, Irrigation, Sewer | United States | North America |
| Sprague | Electric, Fuel Oil, Natural Gas | United States | North America |
| Spring Creek Utility District | Water, Sewer | United States | North America |
| Springdale Water Utilities | Water, Irrigation, Sewer | United States | North America |
| Springfield Utility Board (SUB) | Water, Irrigation, Sewer, Lighting, Electric | United States | North America |
| Springfield Water and Sewer Commission | Water, Sewer | United States | North America |
| SSE Airtricity | Electric, Natural Gas | Ireland | Europe |
| SSE Business Energy | Electric, Natural Gas | United Kingdom | Europe |
| St Bernard Parish | Water, Sewer | United States | North America |
| St Lucie West Services District | Water, Sewer | United States | North America |
| St. Croix Gas | Natural Gas | United States | North America |
| St. Louis Park | Water, Irrigation, Sewer | United States | North America |
| Stadtwerke Augsburg Energie GmbH | District Heat | Germany | Europe |
| Stadtwerke Bochum GmbH | Electric, Natural Gas | Germany | Europe |
| Stadtwerke Bonn GmbH | Electric | Germany | Europe |
| Stadtwerke Duisburg Energiehandel | Water, Electric | Germany | Europe |
| Stadtwerke Dusseldorf AG | District Heat, Electric, Natural Gas | Germany | Europe |
| Stadtwerke Heide GmbH | Water | Germany | Europe |
| Stadtwerke München | Water, Electric, Natural Gas | Germany | Europe |
| Stadtwerke Rendsburg | Electric | Germany | Europe |
| Stadtwerke Wurzburg AG | Water, Electric | Germany | Europe |
| Stadtwerke Zeitz GmbH | Water | Germany | Europe |
| Stanton County Public Power District | Electric | United States | North America |
| Starkville Utilities | Water, Irrigation, Sewer, Sanitation, Lighting, Electric | United States | North America |
| Startex-Jackson-Wellford-Duncan Water District (SJWD) | Water, Irrigation, Sewer | United States | North America |
| STAT Energy | Electric | United States | North America |
| State College Borough Water Authority | Water, Sewer | United States | North America |
| Stearns Electric Association | Electric | United States | North America |
| Sterling Municipal Light Department | Electric | United States | North America |
| Steuben County Rural Electric Membership Corporation | Lighting, Electric | United States | North America |
| Steuben Rural Electric Cooperative | Electric | United States | North America |
| Story City Municipal Electric Utility | Electric | United States | North America |
| Stoughton Utilities | Water, Sewer, Electric | United States | North America |
| Stowe Electric Department | Water, Irrigation, Sewer, Electric | United States | North America |
| Strathcona County | Water, Sewer, Electric | Canada | North America |
| Stream | Lighting, Electric, Natural Gas | United States | North America |
| Studebaker Submetering Incorporated | Water, Sewer, Electric | United States | North America |
| Sturgeon Bay Utilities | Water, Sewer, Sanitation, Electric | United States | North America |
| STURM ENERGIE GmbH | Electric | Austria | Europe |
| Suburban Natural Gas Company | Natural Gas | United States | North America |
| Suburban Propane | Water, Sanitation, Fuel Oil, Propane, Natural Gas | United States | North America |
| Suburban Water Company | Water, Sewer | United States | North America |
| Sudbury Water District | Water, Sewer | United States | North America |
| Sulphur Springs Valley Electric Cooperative | Other Service Type, Lighting, Electric | United States | North America |
| Summer Energy | Lighting, Electric | United States | North America |
| Summerville Comissioners Of Public Works | Water, Irrigation, Sewer | United States | North America |
| Summit Natural Gas | Natural Gas | United States | North America |
| Sumner-Cowley Electric Coop. | Electric | United States | North America |
| Sumter Electric Membership Corporation | Lighting, Electric | United States | North America |
| Sun Belt Fresh Water Supply District | Water, Sewer | United States | North America |
| Sun Prairie Utilities | Water, Irrigation, Sewer, Lighting, Electric | United States | North America |
| Sun River Electric Cooperative | Electric | United States | North America |
| Sun Valley General Improvement District | Water, Irrigation, Sewer | United States | North America |
| Sunrise Water Authority | Water | United States | North America |
| Sunshine Water Services | Water, Sewer | United States | North America |
| Suomen Kaasuenergia | Natural Gas | Finland | Europe |
| Superior Charter Township | Water, Sewer, Sanitation | United States | North America |
| Superior Plus Corporation | Other Service Type, Sanitation, Propane | Canada | North America |
| Superior Water | Water, Lighting, Electric, Natural Gas | United States | North America |
| Surprise | Water, Sewer, Sanitation | United States | North America |
| Surprise Valley Electrification Corporation | Lighting, Electric, Natural Gas | United States | North America |
| Surry-Yadkin Electric Membership Corporation | Lighting, Electric | United States | North America |
| Susquehanna Township Authority | Water, Sewer | United States | North America |
| Suwannee Valley Electric Cooperative | Lighting, Electric | United States | North America |
| Sweetwater Authority | Water | United States | North America |
| Sweetwater Utilities Board | Electric | United States | North America |
| SWG | Water, Irrigation, Sewer, Sanitation, Electric, Natural Gas | Switzerland | Europe |
| Syder Comercializadora Verde | Electric | Spain | Europe |
| Sydney Water | Water, Sewer | Australia | Oceania |
| Symmetry Energy Solutions LLC | Natural Gas | United States | North America |
| Synergy | Lighting, Electric, Natural Gas | Australia | Oceania |
| Synergy North Canada | Water, Sewer, Lighting, Electric | Canada | North America |
| T.I.P. Rural Electric Cooperative | Electric | United States | North America |
| Tahlequah Public Works Authority | Water, Irrigation, Sewer, Lighting, Sanitation, Electric | United States | North America |
| Talen Energy | Lighting, Electric, Natural Gas | United States | North America |
| Tallahatchie Valley Electric Power Association | Lighting, Electric | United States | North America |
| Tallapoosa River Electric Cooperative | Lighting, Electric | United States | North America |
| Talquin | Water, Lighting, Electric | United States | North America |
| Tamil Nadu Generation and Distribution Corporation (TANGEDCO) | Electric | India | Asia |
| Tangipahoa Water District | Water, Sewer | United States | North America |
| Tara Energy | Electric | United States | North America |
| Tata Power Central Odisha Distribution Limited | Electric | India | Asia |
| Tata Power Mumbai | Electric | India | Asia |
| Tata Power Northern Odisha Distribution Limited | Electric | India | Asia |
| Tata Power Southern Odisha Distribution Limited | Electric | India | Asia |
| Tata Power Western Odisha Distribution Limited | Electric | India | Asia |
| Taunton Municipal Lighting Plant (TMLP) | Lighting, Electric, Internet | United States | North America |
| TAURON Dystrybucja S.A. | Electric, Natural Gas | Poland | Europe |
| TAURON Polska Energia S.A | Electric | Poland | Europe |
| Taylor County RECC | Lighting, Electric | United States | North America |
| Taylor Electric Cooperative | Electric | United States | North America |
| Taylor Electric Cooperative | Lighting, Electric | United States | North America |
| Teco Energy | Lighting, Electric, Natural Gas | United States | North America |
| Temescal Valley Water District | Water, Sewer | United States | North America |
| Tenaga Nasional Berhad | Electric | Malaysia | Asia |
| Tennessee Valley Authority | Electric | United States | North America |
| Tennessee Valley Electric Cooperative | Lighting, Electric | United States | North America |
| Texarkana Water Utilities | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Texas Disposal Systems | Sanitation | United States | North America |
| Texas Gas Service | Natural Gas | United States | North America |
| Texas Gas Utility Services | Natural Gas | United States | North America |
| Texas Water Company | Water | United States | North America |
| The City of Aiken | Water, Sewer, Sanitation | United States | North America |
| The City of Akron | Water, Sewer, Sanitation, Natural Gas | United States | North America |
| The City of Albert Lea | Water, Sewer | United States | North America |
| The City of Boca Raton | Water, Irrigation, Sewer, Sanitation | United States | North America |
| The City of Boerne | Water, Electric, Natural Gas | United States | North America |
| The City of Brevard | Water | United States | North America |
| The City Of Euless | Water, Irrigation, Sewer, Sanitation | United States | North America |
| The City of Fairfield | Water, Sewer, Sanitation | United States | North America |
| The City of Fort Walton Beach | Water, Irrigation, Sewer, Sanitation | United States | North America |
| The City of Gravette | Water, Sewer | United States | North America |
| The City of Kenosha Water Utility | Water, Sewer, Sanitation | United States | North America |
| The City of Lake Elmo | Water, Irrigation, Sewer | United States | North America |
| The City Of Lake Forest | Water, Sewer | United States | North America |
| The City of Lake Jackson | Water, Sewer, Sanitation | United States | North America |
| The City of Manistee | Water, Sewer | United States | North America |
| The City of Murphy | Water, Sewer, Sanitation | United States | North America |
| The City of Oxford Electric Department | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| The City of Palm Bay | Water, Irrigation, Sewer, Sanitation, Natural Gas | United States | North America |
| The City of Pelham | Water, Irrigation, Sewer, Sanitation | United States | North America |
| The City of Pembroke Pines | Water, Sewer, Other Service Type, Sanitation | United States | North America |
| The City of Portage | Water, Irrigation, Sewer | United States | North America |
| The City of Radford | Water, Sewer, Lighting, Sanitation, Electric | United States | North America |
| The City of Ridgeland | Water, Irrigation, Sewer, Sanitation | United States | North America |
| The City of Talladega | Water, Sewer | United States | North America |
| The City of Tomball | Water, Sewer, Sanitation, Natural Gas | United States | North America |
| The City Of Union City | Water, Sewer | United States | North America |
| The City of Waco | Water, Irrigation, Sewer, Sanitation, Lighting | United States | North America |
| The County of DuPage | Water, Irrigation, Sewer | United States | North America |
| The Frontier Power Company | Electric | United States | North America |
| The Illuminating Company (First Energy) | Lighting, Electric | United States | North America |
| The Municipal Authority Of The Township Of Robinson | Water, Sewer | United States | North America |
| The Satilla Rural Electric Membership Corporation | Lighting, Electric | United States | North America |
| The Texas General Land Office | Lighting, Electric, Natural Gas | United States | North America |
| The Town of Ashland City | Water, Sewer | United States | North America |
| The Town Of New Tecumseth | Water, Sewer | Canada | North America |
| The Township of Parsippany - Troy Hills | Water, Sewer | United States | North America |
| The United City of Yorkville | Water, Sewer, Sanitation | United States | North America |
| The Village of Glenview | Water, Sewer | United States | North America |
| The Village of Palm Springs | Water, Sewer | United States | North America |
| The Village Of Watkins Glen | Electric | United States | North America |
| The Village of Wellington | Water, Sewer, Sanitation | United States | North America |
| The Village of Weston | Water, Sewer | United States | North America |
| The Woodlands Joint Powers Agency (WJPA) | Water, Irrigation, Sewer | United States | North America |
| The York Water Company | Water, Sewer, Sanitation | United States | North America |
| Think Utility Services Inc | Water, Sewer | United States | North America |
| ThompsonGas | Water, Natural Gas, Propane | United States | North America |
| Three Notch Electric Membership Corporation | Lighting, Electric | United States | North America |
| Three Rivers Electric Cooperative | Lighting, Electric | United States | North America |
| Thumb Electric Cooperative (TEC) | Electric | United States | North America |
| Tideland EMC | Lighting, Electric | United States | North America |
| Tiger Natural Gas | Natural Gas | United States | North America |
| Tillamook People's Utilities District (PUD) | Lighting, Electric | United States | North America |
| Tipmont Rural Electric Membership Corporation (REMC) | Lighting, Electric, Internet | United States | North America |
| TNG | Water, Sewer | United States | North America |
| Todd Wadena Electric Cooperative | Electric | United States | North America |
| Toho Water Authority | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Toledo Edison (First Energy) | Water, Lighting, Electric | United States | North America |
| Tombigbee Electric Power Association | Lighting, Electric | United States | North America |
| Tontitown Water Utilities | Water, Sewer | United States | North America |
| Toronto Hydro | Water, Sanitation, Electric | Canada | North America |
| Total Energie | Electric, Natural Gas | France | Europe |
| Total Energies | Electric, Natural Gas | United States | North America |
| Total Gas & Power | Electric, Natural Gas | United Kingdom | Europe |
| TotalEnergies Power And Gas | Electric | Belgium | Europe |
| Town of Aberdeen | Water, Sewer, Electric | United States | North America |
| Town of Addison | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Town Of Albany | Water, Sewer | United States | North America |
| Town of Apex | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| Town Of Bargersville | Water, Sewer, Lighting, Electric | United States | North America |
| Town Of Belmont | Water, Irrigation, Sewer | United States | North America |
| Town of Big Flats | Water | United States | North America |
| Town of Blacksburg | Water, Sewer, Sanitation | United States | North America |
| Town of Boone | Water, Sewer, Sanitation | United States | North America |
| Town of Brattleboro | Water, Sewer | United States | North America |
| Town of Brownsburg | Water, Sewer | United States | North America |
| Town Of Buena Vista | Water | United States | North America |
| Town of Cary | Water, Irrigation, Sewer, Sanitation, Electric | United States | North America |
| Town Of Central | Water, Irrigation, Sewer | United States | North America |
| Town Of Chandler | Water, Irrigation | United States | North America |
| Town of Christiansburg | Water, Sewer, Sanitation | United States | North America |
| Town of Clay | Water | United States | North America |
| Town of Clayton Utilities Services | Water, Irrigation, Sewer, Sanitation, Lighting, Electric | United States | North America |
| Town of Concord Municipal Utilities | Water, Sewer, Electric, Internet | United States | North America |
| Town of Daleville | Water, Sanitation | United States | North America |
| Town of Dallas | Water, Irrigation, Sewer, Sanitation, Lighting, Electric | United States | North America |
| Town of Danvers Electric Division | Water, Sewer, Electric | United States | North America |
| Town of Danville | Water, Sewer | United States | North America |
| Town of Davie | Water, Sewer | United States | North America |
| Town of Derry | Water, Sewer | United States | North America |
| Town of East Gwillimbury | Water, Sewer | Canada | North America |
| Town of Easton Water Division | Water, Irrigation, Sewer | United States | North America |
| Town of Ellettsville | Water, Irrigation, Sewer | United States | North America |
| Town of Estes Park | Water, Electric | United States | North America |
| Town of Flower Mound | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Town of Forest City | Water, Sewer, Sanitation, Electric | United States | North America |
| Town Of Four Oaks | Water, Sewer | United States | North America |
| Town of Front Royal | Water, Sewer, Electric | United States | North America |
| Town of Fuquay-Varina | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Town of Gilbert | Water, Sewer, Sanitation | United States | North America |
| Town of Grand Chute | Water, Sewer | United States | North America |
| Town of Grand Island | Water | United States | North America |
| Town of Granite Falls | Water, Sewer, Lighting, Electric | United States | North America |
| Town Of Guernsey | Water, Sewer, Sanitation, Electric | United States | North America |
| Town of Harrisburg Water Department | Water, Sewer, Sanitation | United States | North America |
| Town of Henrietta | Water, Sewer | United States | North America |
| Town of Jupiter | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Town Of Knightstown | Water, Sewer, Electric | United States | North America |
| Town of LaCrosse | Irrigation | United States | North America |
| Town of Lady Lake | Water, Irrigation, Sewer, Electric | United States | North America |
| Town of Landis | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| Town of Leesburg | Water, Sewer | United States | North America |
| Town Of Lexington | Water, Irrigation, Sewer | United States | North America |
| Town of Little Elm | Water, Sewer, Sanitation | United States | North America |
| Town of Louisburg | Water, Sewer, Lighting, Electric | United States | North America |
| Town of Marana | Water, Sewer | United States | North America |
| Town of Medley | Water, Sewer | United States | North America |
| Town Of Mocksville | Water, Sewer, Sanitation | United States | North America |
| Town of Montville Water Pollution Control Authority | Water, Sewer | United States | North America |
| Town of Mooresville | Water, Sewer | United States | North America |
| Town Of Morristown | Water, Sewer | United States | North America |
| Town of Munster | Water, Sewer, Sanitation | United States | North America |
| Town of Normal | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Town of Norwood | Water, Sewer, Lighting, Electric | United States | North America |
| Town of Orange Park | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Town of Payson | Water | United States | North America |
| Town of Pendleton | Water, Sanitation, Electric | United States | North America |
| Town of Pendleton | Water, Sewer, Sanitation | United States | North America |
| Town of Plainfield | Water, Sewer, Sanitation | United States | North America |
| Town of Prescott Valley | Water, Irrigation, Sewer | United States | North America |
| Town Of Prosper | Water, Irrigation, Sewer | United States | North America |
| Town of Queen Creek Utilities | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Town of Richlands | Water, Sewer, Sanitation, Electric | United States | North America |
| Town of Rising Sun | Water, Sewer | United States | North America |
| Town Of Sellersburg | Water, Sewer | United States | North America |
| Town of Shallotte North Carolina | Water, Irrigation, Sewer | United States | North America |
| Town of Sharon | Water, Sanitation | United States | North America |
| Town of Shrewsbury | Water, Sewer | United States | North America |
| Town Of Siler City | Water, Sewer | United States | North America |
| Town of Smyrna | Water, Irrigation, Sewer, Natural Gas | United States | North America |
| Town of Smyrna | Water, Sewer, Sanitation, Electric | United States | North America |
| Town Of Southern Pines NC | Water, Sewer, Sanitation | United States | North America |
| Town of Speedway | Water, Irrigation, Sewer | United States | North America |
| Town of Stanley | Water, Sewer, Sanitation | United States | North America |
| Town Of Stantonsburg | Electric | United States | North America |
| Town of Sturbridge | Water, Sewer | United States | North America |
| Town of Summerdale | Water, Sewer, Sanitation | United States | North America |
| Town Of Tarboro | Water, Sewer, Lighting, Electric | United States | North America |
| Town Of Tonawanda NY | Water, Sewer | United States | North America |
| Town Of Trappe Water And Sewer Department | Water, Sewer | United States | North America |
| Town of Wake Forest | Sanitation, Lighting, Electric | United States | North America |
| Town of Watertown | Water, Irrigation, Sewer | United States | North America |
| Town of Waynesville | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| Town Of Weaverville | Water, Sewer | United States | North America |
| Town of Webster | Water, Sewer | United States | North America |
| Town Of Westborough | Water, Sewer | United States | North America |
| Town of Whiteland | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Town of Whitestown | Water, Sewer | United States | North America |
| Town of Winamac | Water, Sewer, Lighting, Electric | United States | North America |
| Town of Windham | Water, Irrigation, Sewer | United States | North America |
| Town of Windsor | Water, Irrigation, Sewer | United States | North America |
| Town of Windsor | Water, Sewer | United States | North America |
| Town of Winterville | Water, Sewer, Lighting, Electric | United States | North America |
| Town of Wytheville | Water, Sewer | United States | North America |
| Town of Zionsville | Sewer, Sanitation | United States | North America |
| TownOfColliervilleTN | Water, Sewer, Sanitation | United States | North America |
| Township of Centre Wellington | Water, Irrigation, Sewer, Electric | Canada | North America |
| Township Of North Fayette | Sewer | United States | North America |
| TransAlta | Electric, Natural Gas | Canada | North America |
| Traverse City | Water, Irrigation, Sewer, Lighting, Electric | United States | North America |
| Travis County Water Control & Improvement District 17 | Water, Sewer, Sanitation | United States | North America |
| Travis County Water District 10 | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Trenton Light & Water | Water, Sewer, Lighting, Sanitation, Electric | United States | North America |
| Tri County Electric Cooperative Inc | Electric | United States | North America |
| Tri County Electric Membership Corporation | Lighting, Electric | United States | North America |
| Tri County Electric Membership Corporation | Lighting, Electric | United States | North America |
| Tri-County Electric | Lighting, Electric | United States | North America |
| Tri-County Electric (TCE) Cooperative | Lighting, Electric | United States | North America |
| Tri-County Electric Cooperative | Lighting, Electric | United States | North America |
| Tri-County Electric Cooperative (TCEC) | Lighting, Electric | United States | North America |
| Tri-County Electric Cooperative (TCEC) | Lighting, Electric | United States | North America |
| Tri-County Rural Electric Cooperative | Electric | United States | North America |
| Tri-State Electric Membership Corporation | Lighting, Electric | United States | North America |
| Trico Electric Cooperative | Lighting, Electric | United States | North America |
| TriCo Regional Sewer Utility | Sewer | United States | North America |
| TriCounty Conservancy District | Water, Sewer | United States | North America |
| Tricounty Rural Electric Cooperative | Electric | United States | North America |
| TriEagle Energy | Lighting, Electric, Natural Gas | United States | North America |
| Trinity Bay Conservation District | Water, Sewer | United States | North America |
| Trinity Valley Electric Cooperative | Lighting, Electric | United States | North America |
| Truckee Donner Public Utility District | Water, Electric | United States | North America |
| Truckee Meadows Water Authority | Water, Irrigation, Sewer | United States | North America |
| True Natural Gas | Lighting, Electric, Natural Gas | United States | North America |
| Tualatin Valley Water District | Water, Irrigation, Sewer | United States | North America |
| Tuas Power Supply | Electric | Singapore | Asia |
| Tucson Electric Power (TEP) | Lighting, Electric | United States | North America |
| Tuolumne Utilities District (TUD) | Water, Irrigation, Sewer | United States | North America |
| Tupelo Water & Light | Water, Sewer, Lighting, Sanitation, Electric | United States | North America |
| Turku Energia | District Heat, Electric | Finland | Europe |
| Turlock Irrigation District (TID) Water & Power | Lighting, Electric | United States | North America |
| Twentynine Palms Water District | Water | United States | North America |
| Twin County Electric Power Association | Lighting, Electric | United States | North America |
| Twin Eagle | Natural Gas | United States | North America |
| Twin Valley Electric Cooperative Inc | Electric | United States | North America |
| Twin Valleys Public Power District | Electric | United States | North America |
| Two Rivers Water and Light | Water, Sewer, Electric | United States | North America |
| TXU Energy | Lighting, Electric, Natural Gas | United States | North America |
| U.S. Water Services Corporation | Water | United States | North America |
| UGI Energy Services | Lighting, Electric, Natural Gas | United States | North America |
| UGI Utilities | Lighting, Electric, Natural Gas | United States | North America |
| Uisce Water Limited | Water, Sewer | Ireland | Europe |
| Union County | Water, Irrigation, Sewer | United States | North America |
| Union Power Cooperative | Lighting, Electric | United States | North America |
| Union Rural Electric (URE) Cooperative | Lighting, Electric, Natural Gas | United States | North America |
| UniSource Energy Services | Lighting, Electric, Natural Gas | United States | North America |
| United Cooperative Services | Water, Lighting, Electric, Internet, Propane | United States | North America |
| United Electric Cooperative | Lighting, Electric | United States | North America |
| United Gas And Power | Electric | United Kingdom | Europe |
| United Illuminating (UI) | Other Service Type, Lighting, Electric | United States | North America |
| United Metro Energy Corporation | Natural Gas, Fuel Oil | United States | North America |
| United Power | Lighting, Electric | United States | North America |
| Unitil | Water, Other Service Type, Lighting, Electric, Natural Gas | United States | North America |
| Unitywater | Water, Sewer, Sanitation | Australia | Oceania |
| Upper Cumberland Electric Membership corporation | Lighting, Electric | United States | North America |
| Upper Moreland Hatboro Joint Sewer Authority | Water, Sewer | United States | North America |
| Upper Peninsula Power Company (UPPCO) | Lighting, Electric | United States | North America |
| Upshur Rural Electric Cooperative | Lighting, Electric | United States | North America |
| Upson Electric Membership Corporation | Lighting, Electric | United States | North America |
| USA Hauling and Recycling | Sanitation | United States | North America |
| Utilities Board of Rainbow City | Water, Sewer, Sanitation | United States | North America |
| Utilities Commission City Of New Smyrna Beach | Water, Irrigation, Sewer, Sanitation, Lighting, Electric | United States | North America |
| Utilities District Of Western Indiana Rural Electric Membership Corporation | Lighting, Electric | United States | North America |
| Utilities Incorporated | Water, Irrigation, Sewer | United States | North America |
| Utilities Kingston | Water, Sewer, Electric, Natural Gas | Canada | North America |
| Utility Billing Services | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Utility Billing Services | Water, Sewer, Sanitation | United States | North America |
| Utility Recovery Systems | Water, Sewer | United States | North America |
| Utility Services of Alaska | Water, Sewer | United States | North America |
| Vail Water Company | Water | United States | North America |
| Vallecitos Water District CA | Water, Irrigation, Sewer | United States | North America |
| Valley County Water District | Water | United States | North America |
| Valley Electric Association | Lighting, Electric | United States | North America |
| Valley Energy | Natural Gas | United States | North America |
| Valley Rural Electric Cooperative | Electric | United States | North America |
| Valley Vista Services (VVS) Inc | Sanitation | United States | North America |
| Valparaiso City Utilities | Water, Sewer, Sanitation | United States | North America |
| Vanguard Energy Services | Natural Gas | United States | North America |
| Vanheede Environment Group | Sanitation | Belgium | Europe |
| Vantaa Energy Limited | Electric | Finland | Europe |
| Vattenfall | Electric, Natural Gas | Netherlands | Europe |
| Vattenfall | Electric | Sweden | Europe |
| Vattenfall | Electric, Natural Gas | Germany | Europe |
| Vattenfall | Electric | Sweden | Europe |
| Veolia | Water, Sewer, Sanitation, Steam, Electric | United States | North America |
| Veolia | Water, Sewer, Sanitation, Steam, Electric, Chilled Water, Natural Gas | United Kingdom | Europe |
| Veolia Eau D Ile de | Water, Sewer | United States | North America |
| Veolia Energy | Water, Sewer | France | Europe |
| Veolia Water | Water, Sanitation | United States | North America |
| Veolia Water Toms River | Water, Sewer | United States | North America |
| Vera Water and Power | Water, Lighting, Electric | United States | North America |
| Verbund | Electric | Austria | Europe |
| Verdigris Valley Electric Co-operative (VVEC) Incorporated | Electric | United States | North America |
| Verendrye Electric Cooperative (VEC) | Lighting, Electric | United States | North America |
| Veridian Connections | Lighting, Electric | Canada | North America |
| Veritas S.p.A | Water, Sanitation | Italy | Europe |
| Vermont Electric Cooperative | Lighting, Electric | United States | North America |
| Vermont Gas | Natural Gas | United States | North America |
| Vernon Electric Cooperative | Electric | United States | North America |
| Versant Power | Lighting, Electric | United States | North America |
| Vicinity Energy | Steam, Chilled Water, Fuel Oil | United States | North America |
| Victoria Electric Cooperative (VEC) | Lighting, Electric | United States | North America |
| Victory Electric Cooperative | Lighting, Electric | United States | North America |
| Vietnam Electricity Ho Chi Minh City | Electric | Vietnam | Asia |
| Vietnam Electricity NPC Cong Ty Dien Luc Bac Ninh Ho Chi Minh City | Electric | Vietnam | Asia |
| Vietnam Electricity SPC Cong Ty Dien Luc Binh Duong Ho Chi Minh City | Electric | Vietnam | Asia |
| Village Community Development District Utilities | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Village of Addison | Water, Sewer, Sanitation | United States | North America |
| Village of Akron | Electric | United States | North America |
| Village of Alsip | Water, Sewer, Sanitation | United States | North America |
| Village of Ashwaubenon | Water, Sewer | United States | North America |
| Village of Baldwin | Water, Sewer | United States | North America |
| Village of Bannockburn | Water, Sewer | United States | North America |
| Village of Bellevue | Water, Sewer | United States | North America |
| Village of Bensenville | Water, Sewer, Sanitation | United States | North America |
| Village of Bergen | Electric | United States | North America |
| Village of Berkeley | Water, Sewer | United States | North America |
| Village of Buffalo Grove | Water, Sewer | United States | North America |
| Village of Byesville | Water, Sewer | United States | North America |
| Village of Canton | Water, Sewer | United States | North America |
| Village of Carey Utilities | Water, Sewer, Electric | United States | North America |
| Village of Carol Stream | Water, Sewer | United States | North America |
| Village of Chatham | Water, Sewer, Lighting, Electric | United States | North America |
| Village of Cornwall-on-Hudson | Water, Sewer, Sanitation | United States | North America |
| Village of Covington | Water, Sewer, Sanitation | United States | North America |
| Village of DeForest | Water, Sewer | United States | North America |
| Village of Downers Grove | Water | United States | North America |
| Village of Elk Grove | Water | United States | North America |
| Village of Forest Park | Water, Sewer | United States | North America |
| Village of Genoa | Water, Sewer, Sanitation, Electric | United States | North America |
| Village Of Glen Carbon | Water, Sewer | United States | North America |
| Village of Glendale Heights | Water, Sewer | United States | North America |
| Village of Grayslake | Water, Sewer, Sanitation | United States | North America |
| Village of Greenfield | Water, Sewer | United States | North America |
| Village Of Hanover Park | Water, Sewer | United States | North America |
| Village of Hartland | Water, Sewer | United States | North America |
| Village Of Hebron | Water, Sewer | United States | North America |
| Village of Hoffman Estates | Water, Sewer, Sanitation | United States | North America |
| Village of Irvington | Water, Landline Phone, Sewer, Internet | United States | North America |
| Village of Itasca | Water, Sewer, Sanitation | United States | North America |
| Village of Johnstown | Water, Sewer | United States | North America |
| Village of L'Anse | Electric | United States | North America |
| Village of Lake in the Hills | Water | United States | North America |
| Village Of Lemont | Water, Sewer | United States | North America |
| Village of Liberty Center | Water, Sewer | United States | North America |
| Village of Lombard | Water, Sewer | United States | North America |
| Village Of Marshall Public Utilities | Water, Sewer, Lighting | United States | North America |
| Village of Mayville | Water, Electric | United States | North America |
| Village of McFarland | Water, Sewer, Electric | United States | North America |
| Village of Melrose Park | Water, Natural Gas | United States | North America |
| Village Of Menomonee Falls Utilities | Water, Irrigation, Sewer | United States | North America |
| Village of Midlothian | Water, Sewer, Sanitation | United States | North America |
| Village of Morton | Water, Irrigation, Sewer, Natural Gas | United States | North America |
| Village of Mount Horeb | Water, Sewer, Lighting, Electric | United States | North America |
| Village of Mount Prospect | Water, Sewer, Sanitation | United States | North America |
| Village Of Mukwonago | Water, Sewer | United States | North America |
| Village of North Aurora | Water, Irrigation, Sewer | United States | North America |
| Village of North Fond Du Lac | Water | United States | North America |
| Village of Orland Park | Water, Sewer, Sanitation | United States | North America |
| Village of Oswego | Water, Sewer, Sanitation | United States | North America |
| Village of Palatine | Water, Sewer, Sanitation | United States | North America |
| Village Of Pewaukee Utilities | Water, Sewer, Sanitation | United States | North America |
| Village of Pleasant Prairie | Water, Sewer, Lighting | United States | North America |
| Village Of Plover | Water, Irrigation, Sewer | United States | North America |
| Village Of Prairie Du Sac | Water, Sewer, Lighting, Sanitation, Electric | United States | North America |
| Village of Rantoul Light And Water Utilities | Water, Irrigation, Sewer, Lighting, Electric, Natural Gas | United States | North America |
| Village of Roselle | Water, Sewer | United States | North America |
| Village Of Round Lake | Water, Sewer, Sanitation, Electric | United States | North America |
| Village of Schaumburg | Water, Sewer | United States | North America |
| Village of Shorewood | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Village of Skokie | Water | United States | North America |
| Village Of Slinger | Water, Sanitation, Electric | United States | North America |
| Village of South Holland | Water, Sewer, Sanitation | United States | North America |
| Village of Stickney | Water, Sewer, Sanitation | United States | North America |
| Village of Streamwood | Water, Sewer | United States | North America |
| Village of Sussex | Water, Sewer | United States | North America |
| Village of Swansea | Sewer | United States | North America |
| Village of Tequesta | Water | United States | North America |
| Village Of Versailles | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| Village of Waynesfield | Electric | United States | North America |
| Village of Westmont | Water, Sanitation | United States | North America |
| Village of Wilmette | Water, Sewer | United States | North America |
| Village Of Windsor | Water, Sewer | United States | North America |
| Village of Winnetka | Water, Sewer, Sanitation, Electric | United States | North America |
| Village Of Winthrop Harbor | Water, Sewer | United States | North America |
| Village of Yellow Springs | Electric | United States | North America |
| Ville de Dieppe | Water, Sewer | France | Europe |
| Ville De Magog | Water, Electric | Canada | North America |
| Ville De Saguenay | Water, Electric | Canada | North America |
| Ville de Sherbrooke | Water, Sewer, Electric | Canada | North America |
| Vincennes Water Utilities | Water, Irrigation, Sewer | United States | North America |
| Virgin Islands Water and Power Authority | Water, Lighting, Electric | United States | North America |
| Virginia Department of Public Utilities | Water, Sewer, Sanitation, Steam, Electric, Natural Gas | United States | North America |
| Virginia Natural Gas | Water, Sewer, Electric, Natural Gas | United States | North America |
| Virginia Tech Electric Service | Lighting, Electric | United States | North America |
| Vista Irrigation District (VID) | Water | United States | North America |
| Vitens N.V. | Water | Netherlands | Europe |
| Volunteer Energy Cooperative (VEC) | Lighting, Electric, Natural Gas | United States | North America |
| Volusia County | Water, Irrigation, Sewer | United States | North America |
| Vonage Business | Landline Phone | United States | North America |
| Wake Electric | Lighting, Electric | United States | North America |
| Wakefield Municipal Gas and Light Department (MGLD) | Lighting, Electric, Natural Gas | United States | North America |
| Walnut Valley Water District | Water, Irrigation, Sewer | United States | North America |
| Walton Electric Membership Corporation (EMC) | Lighting, Electric, Natural Gas | United States | North America |
| Walton Gas | Lighting, Electric, Natural Gas | United States | North America |
| Ward Two Water District | Water, Irrigation | United States | North America |
| Warminster Municipal Authority | Water, Irrigation, Sewer | United States | North America |
| Warren County Rural Electric Membership Cooperative (REMC) | Electric | United States | North America |
| Warren Rural Electric Cooperative Corporation (RECC) | Lighting, Electric | United States | North America |
| Warren Water And Sewer | Water, Sewer, Sanitation | United States | North America |
| Washington County | Water, Sewer | United States | North America |
| Washington Electric Cooperative | Electric | United States | North America |
| Washington Electric Cooperative | Lighting, Electric | United States | North America |
| Washington Electric Membership Corporation | Lighting, Electric | United States | North America |
| Washington Gas | Electric, Natural Gas | United States | North America |
| Washington Suburban Sanitary Commission (WSSC) Water | Water, Sewer, Natural Gas | United States | North America |
| Washington Township Municipal Utilities Authority (WTMUA) | Water, Sewer | United States | North America |
| Washington-East Washington Joint Authority | Water, Sewer | United States | North America |
| Washington-St. Tammany (WST) Electric Cooperative | Lighting, Electric | United States | North America |
| Washoe County Treasurer | Water, Sewer | United States | North America |
| Wasserverband Gifhorn | Water, Sewer | Germany | Europe |
| Waste Connections | Sanitation, Fuel Oil, Natural Gas | United States | North America |
| Waste Connections Lone Star INC | Sanitation | United States | North America |
| Waste Connections Of Missouri | Sanitation | United States | North America |
| Waste Management | Water, Other Service Type, Lighting, Sanitation, Steam, Electric, Natural Gas | United States | North America |
| Waste Pro | Water, Sanitation | United States | North America |
| Water Plus | Water, Sewer, Sanitation, Electric | United Kingdom | Europe |
| Water Works and Lighting Commission (WWLC) | Water, Irrigation, Sewer, Lighting, Electric | United States | North America |
| Water-Link | Water | Belgium | Europe |
| Water2business | Water, Sewer | United Kingdom | Europe |
| Waterleiding Maatschappij Limburg | Water | Netherlands | Europe |
| Waterloo North Hydro Inc | Electric | Canada | North America |
| Waterloo Utilities | Electric | United States | North America |
| Waterloo Water Works | Water, Irrigation, Sewer, Sanitation | United States | North America |
| WaterOne | Water | United States | North America |
| Watertown Municipal Utilities | Water, Sewer, Lighting, Electric, Natural Gas | United States | North America |
| Waukesha Water Utility | Water, Sewer | United States | North America |
| Waunakee Utilities | Water, Sewer, Sanitation, Lighting, Electric | United States | North America |
| Waupun Utilities | Water, Sewer, Electric | United States | North America |
| Wausau Water Works | Water, Sewer | United States | North America |
| Wave Business | Water, Landline Phone, Sewer, Television, Internet | United States | North America |
| We Energies | Sanitation, Lighting, Steam, Electric, Natural Gas | United States | North America |
| Webster Electric Cooperative | Lighting, Electric | United States | North America |
| Welland Hydro-Electric System Corporation | Electric | Canada | North America |
| Wellington North Power Inc. | Water, Sewer, Electric | Canada | North America |
| Wells Branch Municipal Utility District | Water, Sewer, Sanitation | United States | North America |
| Wellsboro Electric Company | Electric | United States | North America |
| Wellton-Mohawk Irrigation And Drainage District | Electric | United States | North America |
| West Central Electric Cooperative Inc | Lighting, Electric | United States | North America |
| West Central Electric Cooperative Incorporated | Lighting, Electric | United States | North America |
| West Deptford Township | Water, Sewer | United States | North America |
| West Des Moines Water Works | Water, Sewer, Sanitation | United States | North America |
| West Escambia Utilities Inc | Water, Sewer | United States | North America |
| West Florida Electric Cooperative | Lighting, Electric | United States | North America |
| West Harris County Municipal Utility District No.21 | Water, Sewer | United States | North America |
| West Jackson County Utility District | Water, Irrigation, Sewer | United States | North America |
| West Kentucky Rural Electric Cooperative Corporation | Lighting, Electric | United States | North America |
| West Knox Utility District | Water, Irrigation, Sewer | United States | North America |
| West Lauderdale Water Authority | Water | United States | North America |
| West Mifflin Sanitary Sewer Municipal Authority (WMSSMA) | Water, Sewer, Sanitation | United States | North America |
| West Penn Power (First Energy) | Lighting, Electric | United States | North America |
| West River Electric Association | Lighting, Electric | United States | North America |
| West Sound Utility District | Water, Sewer | United States | North America |
| West Tennessee Public Utility District | Natural Gas | United States | North America |
| West Travis County Public Utility Agency | Water, Sewer | United States | North America |
| West Valley Collection And Recycling | Sanitation | United States | North America |
| West Valley Water District | Water | United States | North America |
| West View Water Authority (WVWA) | Water, Sewer | United States | North America |
| West Wilson Utility District | Water, Irrigation | United States | North America |
| Western Disposal Services | Sanitation | United States | North America |
| Western Indiana Energy Rural Electric Membership Cooperative | Lighting, Electric | United States | North America |
| Western Municipal Water District | Water, Irrigation, Sewer, Electric | United States | North America |
| Western Virginia Water Authority | Water, Irrigation, Sewer | United States | North America |
| Westfield Gas and Electric | Lighting, Electric, Natural Gas | United States | North America |
| Weston Municipal Utility District | Water, Irrigation, Sewer | United States | North America |
| Wheat Belt Public Power District | Electric | United States | North America |
| Wheat Ridge Water District | Water, Sewer | United States | North America |
| Wheatland Electric | Lighting, Electric | United States | North America |
| Wheatland Rural Electric Association | Lighting, Electric | United States | North America |
| Wheaton Sanitary District | Water, Sewer, Sanitation | United States | North America |
| White Bear Township | Water, Sewer | United States | North America |
| White River Electric Association Inc. | Lighting, Electric | United States | North America |
| White River Valley Electric Cooperative Inc | Lighting, Electric | United States | North America |
| Whitewater Valley REMC | Electric | United States | North America |
| Wien Energie | Electric | Austria | Europe |
| Wilkinsburg-Penn Joint Water Authority | Water, Sewer | United States | North America |
| Will Refuse And Recycling | Sanitation | United States | North America |
| Williamson County WSID3 | Water, Irrigation, Sewer, Sanitation | United States | North America |
| Williamsport Municipal Water | Water, Sewer | United States | North America |
| Willmar Municipal Utilities | Water, Sewer, Lighting, Electric | United States | North America |
| Winchester Municipal Utilities | Water, Sewer, Sanitation | United States | North America |
| WINconnect | Water, Sewer, Electric | Australia | Oceania |
| Windstream | Telecom, Landline Phone, Television, Internet | United States | North America |
| Winners Merchants International | Natural Gas | Canada | North America |
| Winters Bros. Waste Systems | Sanitation | United States | North America |
| Wiregrass Electric Cooperative | Lighting, Electric | United States | North America |
| Wisconsin Public Service (WPS) | Lighting, Electric, Natural Gas | United States | North America |
| Wise Electric Cooperative | Lighting, Electric | United States | North America |
| Withlacoochee River Electric Cooperative | Lighting, Electric | United States | North America |
| Witt Utility District | Water, Sewer | United States | North America |
| Woodfin Water District | Water, Sewer | United States | North America |
| Woodinville Water District | Water, Sewer | United States | North America |
| Woodland Oaks Utility Company | Water, Sewer | United States | North America |
| Woodlands Water | Water, Irrigation, Sewer | United States | North America |
| Woodmen Hills Metropolitan District | Water, Sewer, Sanitation, Lighting | United States | North America |
| WoodRiver Energy LLC | Internet, Natural Gas | United States | North America |
| Woodruff Energy NJ | Fuel Oil, Natural Gas | United States | North America |
| Woodruff-Roebuck Water District | Water | United States | North America |
| Wooster City Services | Water, Sewer, Sanitation | United States | North America |
| Worcester County | Water, Sewer | United States | North America |
| WOW Business | Television, Internet | United States | North America |
| WOW! | Water, Telecom, Landline Phone, Sewer, Television, Sanitation, Internet | United States | North America |
| Wright-Hennepin Cooperative Electric Association | Lighting, Electric | United States | North America |
| Wylie Northeast Special Utility District | Water | United States | North America |
| Wyrulec Company | Electric | United States | North America |
| Xcel Energy | Water, Lighting, Steam, Electric, Chilled Water, Natural Gas | United States | North America |
| Yampa Valley Electric Association | Lighting, Electric | United States | North America |
| Yarra Valley Water | Water, Sewer | Australia | Oceania |
| YES Energy Management | Water, Sewer | United States | North America |
| Yorba Linda Water District (YLWD) | Water, Sewer | United States | North America |
| York County Natural Gas Authority | Natural Gas | United States | North America |
| York Electric Cooperative (YEC) | Lighting, Electric | United States | North America |
| Ypsilanti Community Utilities Authority (YCUA) | Water, Irrigation, Sewer, Electric | United States | North America |
| Yucaipa Valley Water District | Water, Irrigation, Sewer, Electric | United States | North America |
| Yuma and Washington Counties Electric Association Inc | Lighting, Electric | United States | North America |
| Zeeland Board of Public Works | Water, Sewer, Lighting, Electric | United States | North America |
| Ziply Fiber | Landline Phone, Internet | United States | North America |