| Company Name | Entity type | Parent/Subsidiary/Independent | Headquarters | No. of Employees | Annual Revenue ($M) | |
|---|---|---|---|---|---|---|
| Winterthur Gas & Diesel Ltd | Private | Joint Venture | Switzerland | XXX | XXX | |
| Tokyo Gas Co Ltd | Public | Parent | Japan | 16,697 | 19,098 | |
| Naturgy Energy Group SA | Public | Parent | Spain | 7,115 | 26,179 | |
| China Resources Gas Group Ltd | Public | Subsidiary (of China Resources (Holdings) Co Ltd) | Hong Kong | 52,780 | 10,058 | |
| China National Petroleum Corp | Government | Parent | China | 1,448,400 | 435,244 | |
| Saudi Arabian Oil Co | Public | Parent | Saudi Arabia | 68,493 | 400,864 | |
| PetroChina Co Ltd | Public | Subsidiary (of China National Petroleum Corp) | China | 409,191 | 405,332 | |
| Gazprom | Public | Parent | Russia | 468,000 | 139,034 | |
| VNG AG | Private | Subsidiary (of EnBW Energie Baden-Wurttemberg AG ) | Germany | XXX | XXX | |
| ENN Energy Holdings Ltd | Public | Parent | China | 35,598 | 14,436 | |
| EOG Resources Inc | Public | Parent | United States of America | 2,800 | 18,625 | |
| Shell plc | Public | Parent | United Kingdom | 82,000 | 261,504 | |
| China Petroleum & Chemical Corp | Public | Subsidiary (of China Petrochemical Corp) | China | 385,691 | 424,950 | |
| Petroleo Brasileiro SA | Public | Parent | Brazil | 45,532 | 83,908 | |
| ENEOS Holdings Inc | Public | Parent | Japan | 41,852 | 97,232 | |
| AGL Energy Ltd | Public | Parent | Australia | 3,897 | 9,926 | |
| Indian Oil Corp Ltd | Public | Parent | India | 31,254 | 99,785 | |
| GAIL (India) Ltd | Public | Parent | India | 4,754 | 12,579 | |
| Polskie Gornictwo Naftowe i Gazownictwo SA | Private | Subsidiary (of Polski Koncern Naftowy Orlen SA) | Poland | 24,333 | 18,131 | |
| Chevron Corp | Public | Parent | United States of America | 42,595 | 155,606 | |
| Exxon Mobil Corp | Public | Parent | United States of America | 63,000 | 276,692 | |
| E.ON SE | Public | Parent | Germany | 68,535 | 91,472 | |
| TotalEnergies SE | Public | Parent | France | 101,309 | 184,634 | |
| Rosneft Oil Co | Public | Parent | Russia | 334,600 | 118,937 | |
| CNOOC Ltd | Public | Subsidiary (of China National Offshore Oil Corp ) | China | 18,887 | 38,157 | |
| Mitsubishi Corp | Public | Parent | Japan | 80,728 | 153,702 | |
| Oil and Natural Gas Corp Ltd | Public | Parent | India | 27,165 | 72,023 | |
| ConocoPhillips | Public | Parent | United States of America | 9,400 | 45,828 | |
| Enterprise Products Partners LP | Public | Parent | United States of America | 6,911 | 40,807 | |
| Energy Transfer LP | Public | Parent | United States of America | 12,558 | 67,417 | |
| Iberdrola SA | Public | Parent | Spain | 40,543 | 46,250 | |
| Lukoil Oil Co | Public | Parent | Russia | 102,424 | 128,089 | |
| Western Midstream Operating LP | Private | Subsidiary (of Western Midstream Partners LP ) | United States of America | XXX | XXX | |
| BP Plc | Public | Parent | United Kingdom | 65,900 | 157,739 | |
| Korea Gas Corp | Public | Parent | South Korea | 3,505 | 24,054 | |
| Enbridge Inc | Public | Parent | Canada | 10,900 | 37,552 | |
| Occidental Petroleum Corp | Public | Parent | United States of America | 11,678 | 26,122 | |
| Southwest Gas Holdings Inc | Public | Parent | United States of America | XXX | XXX | |
| Engie SA | Public | Parent | France | 171,474 | 68,424 | |
| Galp Energia SGPS SA | Public | Parent | Portugal | 6,152 | 19,441 | |
| Plains GP Holdings LP | Public | Parent | United States of America | 4,100 | 42,078 | |
| Deutsche Telekom AG | Public | Parent | Germany | 210,595 | 128,644 | |
| Uniper SE | Public | Subsidiary (of Government of Germany ) | Germany | 11,249 | 193,897 | |
| Linde plc | Public | Parent | United Kingdom | 65,293 | 30,793 | |
| PTT Public Co Ltd | Public | Parent | Thailand | 29,765 | 70,718 | |
| OMV AG | Public | Parent | Austria | 22,338 | 42,042 | |
| Centrica Plc | Public | Parent | United Kingdom | 19,704 | 25,172 | |
| Exelon Corp | Public | Parent | United States of America | 31,518 | 36,347 | |
| Enel SpA | Public | Parent | Italy | 67,117 | 99,449 | |
| Canadian Natural Resources Ltd | Public | Parent | Canada | 9,735 | 23,978 |
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