| Company Name | Entity type | Parent/Subsidiary/Independent | Headquarters | No. of Employees | Annual Revenue ($M) | |
|---|---|---|---|---|---|---|
| Naturgy Energy Group SA | Public | Parent | Spain | 6,907 | 24,459 | |
| Exxon Mobil Corp | Public | Parent | United States of America | 62,000 | 334,697 | |
| Monster Beverage Corp | Public | Parent | United States of America | 6,003 | 7,140 | |
| Saudi Arabian Oil Co | Public | Parent | Saudi Arabia | 73,311 | 495,412 | |
| Korea Gas Corp | Public | Parent | South Korea | 3,505 | 34,131 | |
| Enterprise Products Partners LP | Public | Parent | United States of America | 7,447 | 49,715 | |
| PetroChina Co Ltd | Public | Subsidiary (of China National Petroleum Corp) | China | 375,803 | 425,723 | |
| Energy Transfer LP | Public | Parent | United States of America | 13,786 | 78,586 | |
| Engie SA | Public | Parent | France | 97,297 | 89,288 | |
| China National Petroleum Corp | Government | Parent | China | XYZ | 505,323 | |
| ConocoPhillips | Public | Parent | United States of America | 10,000 | 56,141 | |
| Plains GP Holdings LP | Public | Parent | United States of America | 4,200 | 48,712 | |
| Chevron Corp | Public | Parent | United States of America | 45,600 | 196,913 | |
| PTT Public Co Ltd | Public | Parent | Thailand | 30,772 | 90,467 | |
| Canadian Natural Resources Ltd | Public | Parent | Canada | 10,272 | 26,657 | |
| Oil and Natural Gas Corp Ltd | Public | Parent | India | 25,993 | 77,879 | |
| Empresas Copec SA | Public | Subsidiary (of Antarchile SA ) | Chile | 37,264 | 29,179 | |
| Verbundnetz Gas AG | Private | Subsidiary (of EnBW Energie Baden-Wurttemberg AG) | Germany | 1,578 | 38,104 | |
| ENEOS Holdings Inc | Public | Parent | Japan | 44,617 | 102,368 | |
| Mitsubishi Corp | Public | Parent | Japan | 79,706 | 144,558 | |
| PG&E Corp | Public | Parent | United States of America | 10 | 24,428 | |
| Constellation Energy Generation LLC | Private | Subsidiary (of Constellation Energy Corp ) | United States of America | 13,813 | 24,918 | |
| Oneok Inc | Public | Parent | United States of America | 4,775 | 17,677 | |
| The Kroger Co | Public | Parent | United States of America | 414,000 | 150,039 | |
| Kunlun Energy Co Ltd | Public | Subsidiary (of China National Petroleum Corp) | Hong Kong | 27,138 | 25,076 | |
| Berkshire Hathaway Energy Co | Private | Subsidiary (of Berkshire Hathaway Inc) | United States of America | 23,700 | 25,602 | |
| Pacific Gas and Electric Co | Public | Subsidiary (of PG&E Corp) | United States of America | 28,000 | 24,428 | |
| Occidental Petroleum Corp | Public | Parent | United States of America | 12,570 | 28,257 | |
| Enel SpA | Public | Parent | Italy | 60,905 | 100,446 | |
| Loews Corp | Public | Parent | United States of America | 12,280 | 15,941 | |
| EOG Resources Inc | Public | Parent | United States of America | 3,050 | 24,091 | |
| Enbridge Inc | Public | Parent | Canada | 11,500 | 32,349 | |
| Glencore Plc | Public | Parent | Switzerland | 83,426 | 217,829 | |
| Plains All American Pipeline LP | Public | Subsidiary (of Plains GP Holdings LP) | United States of America | 4,200 | 48,712 | |
| Duke Energy Corp | Public | Parent | United States of America | 27,037 | 29,060 | |
| Caterpillar Inc | Public | Parent | United States of America | 113,200 | 67,060 | |
| TC Energy Corporation | Public | Parent | Canada | 7,415 | 11,809 | |
| Repsol SA | Public | Parent | Spain | 25,059 | 63,748 | |
| NW Natural Gas Co | Private | Subsidiary (of Northwest Natural Holding Co) | United States of America | 1,258 | 1,017 | |
| Uniper SE | Public | Parent | Germany | 7,037 | 116,703 | |
| Cheniere Energy Inc | Public | Parent | United States of America | 1,605 | 20,394 | |
| Kinder Morgan Inc | Public | Parent | United States of America | 10,891 | 15,334 | |
| QatarEnergy | Government | Parent | Qatar | XYZ | 52,256 | |
| NRG Energy Inc | Public | Parent | United States of America | 18,131 | 28,823 | |
| Florida Power & Light Co | Private | Subsidiary (of NextEra Energy Inc) | United States of America | 9,500 | 18,365 | |
| EnBW Energie Baden-Wurttemberg AG | Public | Parent | Germany | 29,087 | 48,049 | |
| Novatek | Public | Parent | Russia | 18,404 | 16,052 | |
| Eversource Energy | Public | Parent | United States of America | 10,171 | 11,906 | |
| Xcel Energy Inc | Public | Parent | United States of America | 11,311 | 14,206 | |
| The Kansai Electric Power Co Inc | Public | Parent | Japan | 31,628 | 29,989 |
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