| Utility Name |
Country |
| Allegheny Energy Service Corp. |
U.S.A. |
| Arizona Electric Power Coop. |
U.S.A. |
| Arizona Public Service |
U.S.A. |
| Baltimore Gas & Electric |
U.S.A. |
| Bonneville Power Administration |
U.S.A. |
| Central Power & Light Co. |
U.S.A. |
| Chugach Electric Association |
U.S.A. |
| Cincinnati Gas & Electric |
U.S.A. |
| Dayton Power & Light |
U.S.A. |
| Delmarva Power & Light |
U.S.A. |
| Deseret Generation and Transmission Coop. |
U.S.A. |
| First Energy |
U.S.A. |
| Florida Power & Light |
U.S.A. |
| Georgia Power |
U.S.A. |
| GPU Service Corp. |
U.S.A. |
| Houston Light & Power |
U.S.A. |
| Idaho Power Co. |
U.S.A. |
| LADWP |
U.S.A. |
| Nevada Power |
U.S.A. |
| New England Power Service Co. |
U.S.A. |
| New York State Electric & Gas |
U.S.A. |
| Northeast Utilities Service Co. |
U.S.A. |
| Pacific Power & Light (Pacificorp) |
U.S.A. |
| Power Authority o fthe State of New York |
U.S.A. |
| Public Service Electric & Gas |
U.S.A. |
| Salt River Project |
U.S.A. |
| San Diego Gas & Electric |
U.S.A. |
| Santee Cooper |
U.S.A. |
| Southern California Edison |
U.S.A. |
| U.S. Dept. of Energy (WAPA) |
U.S.A. |
| Utah Power & Light (Pacificorp) |
U.S.A. |
|
|
| Edenor, S.A. |
Argentina |
| Electranet Transmission Services |
Australia |
| Powerlink Queensland |
Australia |
| Transend Network Pty Ltd. |
Australia |
| Transgrid Network/Asset Performance |
Australia |
| Western Power |
Australia |
| Power Grid Company of Bangladesh |
Bangladesh |
| Bhutan Power Corp. |
Bhutan |
| Manitoba Hydro |
Canada |
| Ontario Hydro |
Canada |
| CLP Power |
China |
| Hong Kong Electric |
China |
| Empresa de Energia Electric de Bogata |
Colombia |
| Instituto Colombiano de Energia Electrica |
Colombia |
| Interconesion Electrica |
Colombia |
| Intercor |
Colombia |
| Instituto Costarricense de Electricidad |
Costa Rica |
| Transelectric S.A. |
Ecuador |
| Reseau Transport Electricite (RTE) |
France |
| CLP Power |
Hong Kong |
Chattisgarh State Electricity Board (CSEB) |
India |
| GRIDCO Corp. of Orissa Ltd. |
India |
Karnataka Power Transmission Corp. Ltd. (KPTCL)
|
India |
| Maharashtra State Electricity Board (MSEB) |
India |
| Power Grid Corp. of India Ltd. |
India |
| Powerlinks Transmission Ltd. |
India |
| Nusantara Power Services |
Indonesia |
| CPA Contracting Activity |
Iraq |
| ESB National Grid |
Ireland |
| Sarawak Electricity Supply |
Malaysia |
| Tenaga Nasional Berhard |
Malaysia |
| Comision Federal de Electricidad "CFE" |
Mexico |
| Luz y Fuerza |
Mexico |
| OK Tedi Mining Company |
New Guinea |
| Trans Power New Zealand Ltd. |
New Zealand |
| National Power Corporation (TRANSCO) |
Philippines |
| Saudi Consolidated Electric Co. - East |
Saudi Arabia |
| Saudi Consolidated Electric Co. - North |
Saudi Arabia |
| Saudi Consolidated Electric Co. - South |
Saudi Arabia |
| Saudi Consolidated Electric Co. - West |
Saudi Arabia |
| Saudi Electric Co. |
Saudi Arabia |
| Dubai Electricity & Water Authority |
United Arab Emirates (UAE) |
| National Grid Co. plc |
United Kingdom |
| Scottish & Southern Energy plc |
United Kingdom |
| Western Power Distribution |
United Kingdom |
| C.V.G. Electrificacion del Coroni (EDELCA) |
Venezuela |
| Electricidad de Caracas |
Venezuela |
