Adams Electric Cooperative Inc (PA)
Adams Rural Electric Coop Inc (OH)
Aiken Electric Cooperative (SC)
Alabama Electric Coop
Alaska Village Electric Cooperative Inc
Alfalfa Electric Cooperative Inc (OK)
Allegheny Power Co
Alliant Energy Corp
American Electric Power Co
American Municipal Power – Ohio Inc
American Public Power Association (APPA) *
Anoka Electric Cooperative (MN)
Arizona Electric Power Cooperative Inc
Arizona Public Service Co
Arkansas Electric Coop Corp
Associated Electric Coop Inc
Austin Electric Dept
Avista Corp
Baltimore Gas and Electric Co
Bangor Hydro-Electric Co
Benton County PUD No 1
Benton REA
Berkeley Electric Cooperative Inc
Besicorp Development Ltd
Black Hills Electric Coop
Black Hills Power and Light
Blue Grass Rural Electric Cooperative Corp (KY)
Blue Ridge Electric Membership Corp (NC)
Bonneville Power Administration (BPA)
Bowie-Cass Electric Cooperative Inc (TX)
Brainerd Public Utilities
Braintree Electric Light Dept
Brownsville Public Utilities Board
Browning-Ferris Gas Services
Caithness Energy LLC
California Dept of Water Resources
Calpine Corp
Caney Fore Electric Cooperative Inc (TN)
Carroll Electric Membership Corp (GA)
Carteret-Craven Electric Membership Corp (NC)
Cass County Electric Cooperative Inc (ND)
Cedar Falls Utilities
Central Alabama Electric Cooperative
Central Florida Electric Cooperative Inc
Central Iowa Power Cooperative (IA)
Central Missouri Electric Cooperative Inc (MO)
Central Virginia Electric Cooperative (VA)
Charles Mix Electric Association Inc (SD)
Chelan PUD No 1
Choptank Electric Cooperative Inc (MD)
Chugach Electric Assn
Cimarron Electric Cooperative (OK)
Citizens Utilities
Clark Electric Cooperative (WI)
Clark Rural Electric Cooperative Corp (KY)
Claverack Rural Electric Cooperative (PA)
Coast Electric Power Association (MS)
Cobb Electric Membership Corp (GA)
Cobb Electric Membership Corp (GA)
Commonwealth Edison Co
Competitive Power Ventures
Connecticut Valley Electric Exchange #
Consolidated Edison Co
Corn Belt Energy Corp
Cornhusker Public Power District (NE)
Coweta-Fayette Electric Membership Corp (GA)
Cuming County Public Power District (NE)
Dairyland Power Coop
Dakota Electric Association (MN)
Dayton Power and Light Co
Delmarva Power and Light Co
Delta Power Co LLC
Detroit Edison Co
Dixie Electric Membership Corp (LA)
Dominion Resources Inc
Duke Power Co
Dynegy Corp
East Bay Municipal Utility Dist
East Central Energy
East Kentucky Power Coop Inc
Eastern Illini Electric Cooperative (IL)
Eastern Maine Electric Cooperative Inc
Eau Claire Electric Cooperative
Edison Electric Institute (EEI) *
Edison International
El Paso Electric Co
Electric Power Research Institute (EPRI) *
ElectriCities of North Carolina Inc
Elkhorn Rural Public Power District (NE)
Emerald PUD
EnerStar Power Corp
Enron Corp
Entergy Corp
Escambia River Electric Cooperative Inc (FL)
Exelon Corp
Farmers Electric Cooperative (IA)
Fayetteville Public Works Comm
First Electric Cooperative Corp
Florida Keys Electric Coop Assn Inc
Florida Municipal Power Agency
Florida Power and Light Co
Four County Electric Power Association (MS)
FPL Energy LLC
Gainesville Regional Utilities
Golden Valley Electric Association
Grayson Rural Electric Cooperative Corp (KY)
Great River Energy
GreyStone Power Corp
Hawaiian Electric Co
Holy Cross Electric Association Inc (CO)
Hoosier Energy Rural Electric Cooperative (IN)
IES Utilities
Illinois Valley Electric Cooperative Inc (IL)
Indiana Municipal Power Agency (IMPA)
Indeck Energy
IPALCO Enterprises Inc (Indianapolis Power and Light)
ISO-New England #
Jacksonville Electric Authority
Jay County REMC
Jones-Onslow Electric Membership Corp (NC)
Kandiyohi Cooperative Electric Power Assn (MN)
Kansas City Board of Public Works
Kansas City Power and Light
Kansas Electric Power Cooperative (KS)
Kauai Electric
Kay Electric Coop
KeySpan Energy
Kootenai Electric Cooperative (ID)
Kodiak Electric Association Inc
La Plata Electric Association Inc (CO)
Lane Electric Cooperative (OR)
Laurens Electric Cooperative Inc (SC)
Leavenworth-Jefferson Electric Cooperative (KS)
Lincoln Electric System
Los Angeles Dept Water and Power
Loup River Public Power District
Lower Colorado River Auth
Madison Gas and Electric Co
Marshfield Electric and Water Dept
Mecklenburg Electric Cooperative (VA)
Menard Electric Cooperative (IL)
Michigan Public Power Agency
MidAmerican Energy Holdings Co
Midwest Electric Cooperative (TX)
Midwest Electric Inc (OH)
Minnesota Power and Light
Minnkota Power Coop Inc
Mitchell Electric Membership Corp (GA)
Morgan County Rural Electric Association (CO)
Municipal Elec Authority of Georgia (MEAG)
Nebraska Public Power District
Nevada Power Co
New Hampshire Electric Coop Inc (NH)
New York Power Authority
New World Power Corp
Nishnabotna Valley Rural Electric Cooperative (IA)
Nodak Rural Electric Cooperative Inc (ND)
North American Electric Reliability Council (NERC) *
North Arkansas Electric Cooperative Inc
North Attelborough Electric Dept
North Carolina Electric Membership Corp
North Central Missouri Electric Cooperative
North Western Electric Cooperative Inc
Northwestern Wisconsin Electric Co
Northeast Utilities
Northern Alternative Energy Inc
Northern Indiana Public Service Co
Northern Neck Electric Cooperative (VA)
Northwest Power Pool (NWPP) #
Northwest Public Power Association
NRG Energy Inc
Oconee Electric Membership Corp
Oglethorpe Power Corp
Ohio Valley Electric Corp
Okefenoke Rural Electric Membership Corp (GA)
Oklahoma Electric Cooperative (OK)
Oklahoma Gas and Electric Co
Omaha Public Power Dist
Orange and Rockland Utilities
Orcas Power and Light Co (WA)
Orlando Utilities Commission
Otter Tail Power Co
Ozark Electric Cooperative (MO)
Palmetto Electric Cooperative Inc (SC)
Panda Energy International Inc
Panhandle Rural Electric Membership Assn (NE)
Pedernales Electric Cooperative Inc
Pioneer (AL) Electric Cooperative
PJM Interconnection #
Platte River Power Authority
Pointe Coupee Electric Membership Corp (LA)
Portland General Electric Co
Potomac Electric Power Co (Pepco)
Poudre Valley Rural Electric Association (CO)
PPL Global
Public Service Electric and Gas Co
Public Service New Hampshire
Public Service New Mexico
Puget Sound Energy Inc
Rappahannock Electric Coop
Ravalli County Electric Cooperative Inc (MT)
Reading Municipal Light Dept
Reliant Energy
Rochelle Municipal Utilities
Rural Electric Supply Cooperative
Sacramento Municipal Utility District
Safe Harbor Water Power Corp
Sam Houston Electric Cooperative Inc (TX)
San Antonio City Public Service
San Diego Gas and Electric Co
Seattle City Light
SeaWest Power Systems Inc
Seminole Electric Cooperative
Shelby Rural Electric Cooperative Corp (KY)
Sierra Pacific Power Co
Singing River Electric Power Association (MS)
South Alabama Electric Cooperative