Ameren

Carolina Power & Light

Commonwealth Edison

Consolidated Edison

Consumers Energy

Detroit Edison

Duke Energy

First Energy

FPL Group

Minnesota Power

Nevada Power Company

Niagara Mohawk Power Marketing

Northeast Utilities

Northern Illinois Gas

Oklahoma Gas & Electric

Pennsylvania Power and Light

PG&E

Potomac Electric Power Company

Public Service Electric & Gas

Public Service Company of Colorado

Reliant Energy

San Diego Gas & Electric

Southern California Edison

Southern Gas Company

TXU

Research Organizations

American Gas Association (AGA)

Electric Power Research Institute (EPRI)

Sandia National Laboratories (SNL)

Alaska Energy Authority

Bonneville Power Administration (BPA)

California Energy Commission (CEC)

Oklahoma Corporation Commission

Tennessee Valley Authority (TVA)

Municipalities and Cooperatives

Alabama Electric Cooperative

Alaska Railbelt Power Companies

Chugach Electric Cooperative

City of Palo Alto

East Kentucky Power Cooperative (EKPC)

Los Angeles Department of Water & Power (LADWP)

Northern California Power Agency (NCPA)

International

CFE (Mexico)

National Power (UK)

PowerGen (UK)

Scottish Power (UK)

TransAlta (Canada)

Other

Babcock & Wilcox

Bechtel Enterprises

Black & Veatch

Blount Engineering

The World Bank