- Alabama Power Company
- Alameda, City of, Bureau of Electricity
-ABAG
- Alberta Power, now ATCO
*
- Ashland, City Of
- Alliant Energy
Alpena Power Company
Allegheny Power
*
- Ameren Corporation
- American Electric Power
- Arizona Public Service Company
- APS *
- Arkansas Electric Cooperative Corporation
- Associated Electric Cooperative,
Inc., (AECI)
*
- Austin Electric Department
- Texas.
- Avista Corporation
- Avista Utilities Corporation
- Baltimore Gas & Electric
- Bangor Hydro-Electric Company
- Basin Electric Power
Cooperative - North Central US G&T.
- B.C. Hydro
- Bear Valley Electric Service
Benton Public Utility District -
Washington.
- Berkeley Electric Cooperative
- Black Hills Corporation
Board of Public Utilities - Kansas.
- Bonneville Power Administration
- Boston Edison Company - NSTAR
- Braintree Electric Light Dept.
- British Columbia Hydro and Power
Authority
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-
Carolina Power & Light
-
Cedar Falls Utilities - Iowa.
- Central and Southwest
- AEP
- Central Maine Power Comany
- Central Vermont Public Service Corp.
- Chugach Electric Association,
Inc.
- Citizens' Electric Company
- Cinergy
- City of Austin Electric
Utility
- Clallam County P.U.D. No. 1
- CMS Energy
- CMP Group, Inc
College Station - Texas.
- CRPUD - Columbia River P.U.D.,
Oregon.
- Concord Electric Company - Unitil
- Conectiv
Connecticut Light & Power
Connecticut Valley Electric Exchange
Consumers Power Company - Michigan.
- Con Edison Consolidated Edison, New
York.
- Dairyland Power Cooperative
- Dayton Power & Light
- Delmarva Power & Light
- Detroit Edison Company
Douglas Electric Cooperative - Roseburg
Oregon.
- Dominion Resources, Inc.
- DTE Energy
DQE - Duquesne Light Company
- Duke Power Company
- East Bay Municipal Utility
District
- East Kentucky Power Cooperative, Inc.
- Eastern Energy - TXU-Australian
- Eastern Utilities
- Edison International - Formerly SCE.
- El Paso Electric Company
- ElectriCities of North Carolina
-
Services to 72 communities.
- Empire District Electric Company
- Empire
Electric
Association - Colorado.
- Engage Energy
- Entergy Corporation
- Electric Council of New England
- ElectriCities of North Carolina
- Electronic
Warehouse
- Empire
- ESELCO
- EWEB - Eugene Water & Electric Board .
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- FirstEnergy
Fitchburg Gas and Electric Light
Company - UNITIL
- Florida Power & Light Company
- Fort Collins
- Colorado
- FPL Group - Offering Electric Power
Utility, Electricity Generation & Fiber-Optic Telecomm Services
- Furnas Centrais Eletricas S.A
- Gainesville Regional
Utilities - Florida.
- Georgia Power -
[Southern Company].
- Glasgow Electric Plant Board - Kentucky.
- Granite State
Electric Company
Green Mountain Power Corporation
- Gulf Power Company
- Hawaiian Electric Company
- Hawaiian Electric Industries (HEI)
- Hong Kong Electric
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- Island Energy
- Idaho Power Company
- IES Industries
- Alliant Energy
- Illinois Power
- Indianapolis Power & Light Company
- IPALCO
- Illinova Corporation
- Indianapolis Power & Light Co.
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- Jacksonville Electric Authority
- Jersey Central Power & Light Company
- Kansai Electric Power Co. Inc.
- Kansas City Power & Light Company
- Kentucky Utilities Company
- KN Energy
- Kootenai Electric Cooperative
- Korea Electric Power Corporation
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- Lane Electric Cooperative
- LG&E Energy
- Lockhart Power Company
Lower Colorado River Authority (LCRA)
- Madison Gas and Electric
Maine Public Service
Company
- Manitoba Hydro
- Massachusetts Electric
- Matanuska Electric Association
- MERALCO
- Minnesota Power
- Mississippi Power Company - [Southern
Company].
- Missoula Electric Cooperative, Inc.
- Montana.
- Modern Electric Water Company
Modesto Irrigation District - California.
- Montana-Dakota Utilities Co.
Montana Power Company
- now Northwestern Energy
- Murray City Power - Utah.
- Nantahala Power and Light - Duke Power
Narragansett Electric
- National Rural Electric Cooperative
Association
- NEES companies - National
Grid
- Nevada Power Company
- New Jersey Resources Corporation
- New England Electric Systems - (National
Grid)
- Newfoundland Power
- New Jersey Natural Gas
- New York State Electric & Gas
- New York Power Authority
- Niagara Mohawk Power Corporation
- NIPSCO
- North American Electric Reliability Council
(NERC)
- Northeast Utilities
Northern States Power Company
- XcelEnergy
- Northwest Iowa Power Cooperative
- Northwestern Energy
- Northwestern Public
Service
- OG&E
- Oklahoma Gas & Electric
- Ohio Edison
- First Energy
- Orcas Power and Light - Washington
State
- Orlando Utilities Commission - Florida.
- OtterTail Power Company
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- Pacific Gas & Electric Company
-
Pacific County P.U.D
- PECO Energy
- Exelon
- Pedernales Electric Cooperative - Texas.
-
Pend Oreille County PUD
- Piedmont Municipal Power Agency
- Pierce-Pepin Electric Cooperative - Wisconsin.
- Pinnacle West
- Plumas-Sierra Rural Electric Cooperative
- Potomac Electric Power Company (PEPCO)
- Portland General Electric - Oregon.
- Progress Energy Carolinas, Inc.
- Progress Energy Florida, Inc
- Public Service Electric and Gas - New Jersey
- Public Service Enterprise Group - New Jersey
- Public Service of New Hampshire
- Puget Sound Energy
- Ravalli County Electric
Cooperative
- Reading Municipal Light Department -
Massachusetts.
- Rochester Gas & Electric - New York.
- Rochester Public Utilities - Rochester, MN
- Sacramento Municipal Utility District
- Salt River Project - Arizona
- San Diego Gas & Electric Company (Now
part of Sempra)
- SaskPower
- Sempra Energy
- Savannah Electric - Georgia
[Southern Company].
- SCANA Corporation - South Carolina
Electric & Gas Co.
- Sierra Pacific - Nevada &
California.
- SIGCORP
- Snohomish County Public Utility
District
- South Carolina Electric & Gas
Company - SCE&G
- Southern California Edison Co.
- Southern Company - Alabama
Power - Georgia Power - Gulf Power - Savannah Electric
- Springfield City
Utilities - Missouri.
- St. Joseph Light & Power - Missouri
- Tacoma Public
Utilites
- Tampa Electric
- Tecumseh Utility Authoriy -
Oklahoma
- Tennessee Valley Authority
- TNP Enterprises, Inc. Texas, New Mexico
- TEPCO (Tokyo Electric Power Company)
- Texas Electric Cooperatives
- Texas-New Mexico Power Company
- Texas Municipal Power Agency
- TransAlta Corporation
- Tri-State Generation and
Transmission
- Tucson Electric Power
Turlock Irrigation District
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- Umatilla Electric Cooperative
- Unicom - Commonwealth Edison
- Union Electric Co.
- UniSource Energy Corporation
- UNITIL - US Northeast.
- Upper Peninsula Power Company
UtiliCorp United - Energy One
- Virginia Power
- WNP2 - Washington Public Power Supply
System
- Wellsboro Electric Company
- Western Area Power Administration.WAPA
- Western Massachusetts Electric Company
- Western Resources
- Wisconsin Energy Corporation
- Wisconsin Power & Light
- Wisconsin Public Service Corporation
- Wolf Creek Generating Station
- Yampa Valley Electric Association - Colorado.
- Yankee Atomic Electric Company
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