| Company Name | Entity type | Parent/Subsidiary/Independent | Headquarters | No. of Employees | Annual Revenue ($M) | |
|---|---|---|---|---|---|---|
| Eco Marine Power Co., Ltd. | Private | Independent | Japan | XXX | XXX | |
| Uniper SE | Public | Subsidiary (of Government of Germany ) | Germany | 11,249 | 193,897 | |
| Electricite de France SA | Public | Parent | France | 163,423 | 99,871 | |
| Enel SpA | Public | Parent | Italy | 67,117 | 99,449 | |
| E.ON SE | Public | Parent | Germany | 68,535 | 91,472 | |
| Siemens AG | Public | Parent | Germany | 308,000 | 85,109 | |
| China Southern Power Grid Co Ltd | Private | Parent | China | XXX | 81,200 | |
| Marubeni Corp | Public | Parent | Japan | 46,100 | 75,749 | |
| Engie SA | Public | Parent | France | 171,474 | 68,424 | |
| Korea Electric Power Corp | Public | Parent | South Korea | 48,809 | 52,945 | |
| Tokyo Electric Power Co Holdings Inc | Public | Subsidiary (of Nuclear Damage Compensation and Decommissioning Facilitation Corporation of Japan ) | Japan | 37,939 | 47,272 | |
| Iberdrola SA | Public | Parent | Spain | 40,543 | 46,250 | |
| EnBW Energie Baden-Wurttemberg AG | Public | Parent | Germany | 26,312 | 38,013 | |
| Exelon Corp | Public | Parent | United States of America | 31,518 | 36,347 | |
| Schneider Electric SE | Public | Parent | France | 166,025 | 34,179 | |
| Huaneng Power International Inc | Public | Subsidiary (of Huaneng International Power Development Corporation ) | China | 57,513 | 31,722 | |
| RWE AG | Public | Parent | Germany | 18,201 | 29,001 | |
| GD Power Development Co Ltd | Public | Parent | China | 42,374 | 26,076 | |
| NRG Energy Inc | Public | Parent | United States of America | 6,635 | 26,989 | |
| Berkshire Hathaway Energy Co | Private | Subsidiary (of Berkshire Hathaway Inc) | United States of America | 23,600 | 25,150 | |
| PT PLN (Persero) | Government | Parent | Indonesia | 54,129 | 25,743 | |
| Duke Energy Corp | Public | Parent | United States of America | 27,605 | 25,097 | |
| Centrica Plc | Public | Parent | United Kingdom | 19,704 | 25,172 | |
| Chubu Electric Power Co Inc | Public | Parent | Japan | 28,365 | 24,083 | |
| The Kansai Electric Power Co Inc | Public | Parent | Japan | 31,963 | 25,389 | |
| National Grid Plc | Public | Parent | United Kingdom | 30,756 | 25,117 | |
| Endesa SA | Public | Subsidiary (of Enel SpA) | Spain | 9,215 | 24,712 | |
| PT Pertamina (Persero) | Government | Parent | Indonesia | 34,183 | 57,509 | |
| Southern Co | Public | Parent | United States of America | 27,300 | 23,113 | |
| Energeticky a Prumyslovy Holding AS | Private | Parent | Czech Republic | 11,453 | 22,386 | |
| Comision Federal de Electricidad | Government | Parent | Mexico | XXX | XXX | |
| NextEra Energy Inc | Public | Parent | United States of America | 15,000 | 20,956 | |
| Pacific Gas and Electric Co | Public | Subsidiary (of PG&E Corp) | United States of America | 16,000 | 20,642 | |
| PG&E Corp | Public | Parent | United States of America | 26,000 | 20,642 | |
| Constellation Energy Generation LLC | Private | Subsidiary (of Constellation Energy Corp ) | United States of America | XXX | XXX | |
| Tohoku Electric Power Co Inc | Public | Parent | Japan | 24,833 | 18,735 | |
| Saudi Electricity Co | Public | Parent | Saudi Arabia | 28,414 | 18,508 | |
| NTPC Ltd | Public | Parent | India | 17,474 | 17,969 | |
| Energias de Portugal SA | Public | Parent | Portugal | 12,904 | 17,717 | |
| GS Holdings Corp | Public | Parent | South Korea | 25 | 17,691 | |
| Vietnam Electricity | Private | Parent | Vietnam | XXX | 17,404 | |
| Enel Americas SA | Public | Subsidiary (of Enel SpA) | Chile | 16,323 | 16,192 | |
| American Electric Power Co Inc | Public | Parent | United States of America | 16,688 | 16,792 | |
| Electricity Generating Authority of Thailand | Government | Parent | Thailand | 17,640 | 16,347 | |
| Kyushu Electric Power Co Inc | Public | Parent | Japan | 21,226 | 15,520 | |
| Datang International Power Generation Co Ltd | Public | Subsidiary (of China Datang Corp) | China | 32,641 | 16,033 | |
| Huadian Power International Corporation Ltd | Public | Parent | China | 24,711 | 15,657 | |
| Edison International | Public | Parent | United States of America | 13,003 | 14,905 | |
| DTE Energy Co | Public | Parent | United States of America | 10,300 | 14,964 | |
| Prysmian SpA | Public | Parent | Italy | 30,862 | 15,060 |
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