Regulatory Agencies:
Arizona Corporation Commission
Federated States of Micronesia
Federal Trade Commission
Georgia Public Service Commission
Illinois Department of Nuclear Safety
Massachusetts Attorney General’s Office
National Electricity Board (Malaysia)
Nevada Public Utility Commission
New Hampshire Attorney General’s Office Nuclear
New Hampshire Decommissioning Financing Committee
New Hampshire Public Utilities Commission
New Jersey Board of Public Utilities
New York State Public Service Commission
Pennsylvania Public Utility Commission
Public Utility Control Authority of Connecticut
Public Utilities Commission of Oregon
Trinidad and Tobago Electricity Commission
United States Department of Energy
Vermont Department of Public Service
Vermont Public Service Board

Utilities:
Allegheny Power
American Electric Power
Aquila Energy
Arizona Public Service Company
Associated Electric
Baltimore Gas and Electric
Bay State Gas
Big Rivers Electric
Boston Edison
British Gas-Public Gas Supply
Cajun Electric Cooperative
Columbia Gas Transmission Corporation
Commonwealth Edison Company
Central Iowa Power Cooperative
Central Maine Power
Central Power and Light
Colorado-Ute Electric Association
Consolidated Edison
Consumers Power
Detroit Edison
Dominion Energy
Duquesne Light Company
Electricity Supply Commission of South Africa
El Paso Electric Company
EnerShop
Entergy
Exelon
Florida Power Corporation
Florida Power & Light
Georgia Power Company
Green Mountain Power Corporation
Guam Power Authority
Gulf Power Company
Hawaiian Electric Company, Inc.
Houston Lighting and Power

Hydro Quebec
Illinois Power
Indiana Gas
Jersey Central Power & Light
Kansas City Power & Light
KeySpan Energy
Laclede Gas Company
MidAmerican Energy
Mississippi Power & Light
Missouri Public Service Company
National Fuel Gas Company
New Hampshire Electric Cooperative
New York Power Pool
Niagara Mohawk Power
Northeast Electric Board of Great Britain
Northeast Utilities
Ohio Power Company
Ontario Power Generation
Orlando Utilities Commission
PacifiCorp
Pacific Gas and Electric Corporation
Pennsylvania Power & Light Co.
Piedmont Natural Gas
Portland General Electric Company
Public Service Company of New Hampshire
Public Service Electric and Gas
Public Service of Colorado
Reliant Energy
San Diego Gas & Electric
Saskatchewan Power
SCANA
SEMCO Energy Inc.
Sierra Pacific Power
South Carolina Electric and Gas
Southern Electric International
Southern Indiana Gas and Electric
Southern New Hampshire Water Company, Inc.
Southwestern Electricity Board (England)
Tampa Electric Company
Tennessee Valley Authority
Texas Electric Utilities
Tri-State Generation and Transmission
Tuscon Electric Power
Vermont Electric Cooperative
Vermont Electric G&T Corporation
Washington St. Tammany Cooperative
Wisconsin Electric Power
Wisconsin Gas

Other:
Electric Power Research Institute
Impell Corporation
LTV Corp
Town of Lempster, NH
National Coal Association
Neutron Products
Society for the Protection of  New Hampshire Forests