| Alberta Department of Utilities |
Orinda Union School District |
| American Electric Power |
PacifiCorp Power Marketing |
| Amgen |
PPL Corp |
| Arizona Public Service Company |
Pacific Gas and Electric Company |
| Cinergy |
Pacific Gas Transmission |
| Cogeneration Association of California |
Pinnacle West |
| Colorado Independent Energy Association |
Port of Long Beach |
| Consolidated Edison of New York |
San Diego Gas & Electric Company |
| Consolidated Natural Gas Transmission |
Sithe Energies |
| CIGNA Insurance |
Southern Company |
| City of Huntington Beach |
Southern California Edison Company |
| Drummond Coal |
SeaWest Wind Corp |
| Duke Energy |
Tennessee Valley Authority |
| Electric Clearinghouse (Dynegy) |
The Emissions Exchange |
| Electric Power Research Institute (EPRI) |
Utility Air Regulatory Group |
| GreenFire Energy |
Universal Studios |
| Harvard Management Corporation |
U.S. Environmental Protection Agency |
| Korea Power Exchange |
U.S. General Accounting Office |
| National Acid Precipitation Assessment Program |
Wellhead Power Solutions |
| Northern California Power Agency |
|
