| Company Name | Entity type | Parent/Subsidiary/Independent | Headquarters | No. of Employees | Annual Revenue ($M) | |
|---|---|---|---|---|---|---|
| Electricite de France SA | Private | Parent | France | 165,028 | 150,869 | |
| Uniper SE | Public | Parent | Germany | 6,863 | 116,703 | |
| China Southern Power Grid Co Ltd | Private | Parent | China | 280,000 | 102,700 | |
| E.ON SE | Public | Parent | Germany | 72,242 | 101,315 | |
| Enel SpA | Public | Parent | Italy | 61,055 | 100,446 | |
| Engie SA | Public | Parent | France | 97,297 | 89,288 | |
| Korea Electric Power Corp | Public | Parent | South Korea | XYZ | 67,579 | |
| Marubeni Corp | Public | Parent | Japan | 45,995 | 67,896 | |
| Tokyo Electric Power Co Holdings Inc | Public | Subsidiary (of Nuclear Damage Compensation and Decommissioning Facilitation Corporation of Japan ) | Japan | 38,007 | 57,614 | |
| Iberdrola SA | Public | Parent | Spain | 41,448 | 53,352 | |
| EnBW Energie Baden-Wurttemberg AG | Public | Parent | Germany | 28,630 | 48,049 | |
| Centrica Plc | Public | Parent | United Kingdom | 21,014 | 41,494 | |
| Energeticky a Prumyslovy Holding AS | Private | Parent | Czech Republic | XYZ | 39,034 | |
| Schneider Electric SE | Public | Parent | France | 168,044 | 38,826 | |
| Huaneng Power International Inc | Public | Subsidiary (of Huaneng International Power Development Corporation ) | China | 57,038 | 35,969 | |
| RWE AG | Public | Parent | Germany | 20,135 | 30,892 | |
| Comision Federal de Electricidad | Government | Parent | Mexico | XYZ | 30,884 | |
| Chubu Electric Power Co Inc | Public | Parent | Japan | 28,367 | 29,452 | |
| Duke Energy Corp | Public | Parent | United States of America | 27,037 | 29,060 | |
| GD Power Development Co Ltd | Public | Parent | China | 39,250 | 28,637 | |
| PT PLN (Persero) | Government | Parent | Indonesia | 42,151 | 29,726 | |
| NextEra Energy Inc | Public | Parent | United States of America | 16,800 | 28,114 | |
| The Kansai Electric Power Co Inc | Public | Parent | Japan | 31,628 | 29,195 | |
| NRG Energy Inc | Public | Parent | United States of America | 18,131 | 28,823 | |
| Endesa SA | Public | Subsidiary (of Enel SpA) | Spain | 9,035 | 27,532 | |
| Berkshire Hathaway Energy Co | Private | Subsidiary (of Berkshire Hathaway Inc) | United States of America | 24,000 | 26,337 | |
| National Grid Plc | Public | Parent | United Kingdom | 31,275 | 26,697 | |
| Southern Co | Public | Parent | United States of America | 28,100 | 25,253 | |
| IHI Corp | Public | Parent | Japan | 28,486 | 9,995 | |
| Pacific Gas and Electric Co | Public | Subsidiary (of PG&E Corp) | United States of America | 28,000 | 24,428 | |
| A2A SpA | Public | Parent | Italy | 13,841 | 24,360 | |
| Constellation Energy Generation LLC | Private | Subsidiary (of Constellation Energy Corp ) | United States of America | 13,370 | 24,440 | |
| PG&E Corp | Public | Parent | United States of America | 10 | 24,428 | |
| Electricity Generating Authority of Thailand | Government | Parent | Thailand | XYZ | XYZ | |
| NTPC Ltd | Public | Parent | India | 20,818 | 22,455 | |
| Exelon Corp | Public | Parent | United States of America | 19,962 | 21,727 | |
| GS Holdings Corp | Public | Parent | South Korea | 25 | 22,291 | |
| Tohoku Electric Power Co Inc | Public | Parent | Japan | 24,528 | 22,216 | |
| Saudi Electricity Co | Public | Parent | Saudi Arabia | 28,414 | 20,103 | |
| Edison SpA | Public | Subsidiary (of Electricite de France SA) | Italy | 5,957 | 19,937 | |
| LONGi Green Energy Technology Co Ltd | Public | Parent | China | 60,601 | 19,172 | |
| American Electric Power Co Inc | Public | Parent | United States of America | 17,250 | 18,982 | |
| Energias de Portugal SA | Public | Parent | Portugal | 12,903 | 17,522 | |
| Vietnam Electricity | Government | Parent | Vietnam | XYZ | XYZ | |
| Florida Power & Light Co | Private | Subsidiary (of NextEra Energy Inc) | United States of America | 9,300 | 17,282 | |
| Datang International Power Generation Co Ltd | Public | Subsidiary (of China Datang Corp ) | China | 31,227 | 17,363 | |
| EDF Energy Holdings Ltd | Private | Subsidiary (of Electricite de France SA) | United Kingdom | XYZ | 16,886 | |
| Eskom Holdings SOC Ltd | Government | Parent | South Africa | 40,421 | 16,682 | |
| Kyushu Electric Power Co Inc | Public | Parent | Japan | 21,096 | 16,410 | |
| Edison International | Public | United States of America | 14,316 | 16,338 |
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