| Name | Country | Market Cap (US$) |
|---|
| Abengoa Bioenergy Corp | United States | Private |
| Abengoa Bioenergy of Nebraska LLC | United States | Private |
| AES Andres B.V. | Dominican Republic | Private |
| AES El Salvador | El Salvador | Private |
| Alon Israel Oil Company Ltd. | Israel | Private |
| Altayenergo | Russia | Private |
| Alupar Investimento S.A. | Brazil | Private |
| Amazys Holding | Switzerland | Private |
| Arkhenergo | Russia | Private |
| Baxi Group Ltd. | United Kingdom | Private |
| British Nuclear Fuels PLC | United Kingdom | Private |
| British Nuclear Group Limited | United Kingdom | Private |
| Bryanskenergo | Russia | Private |
| Callahan Realty Company | United States | Private |
| Cambrian Engineering Ltd | United Kingdom | Private |
| Canadian Conquest Exploration Inc. | Canada | Private |
| Castrol N.V. | Belgium | Private |
| Cherepetskaya GRES | Russia | Private |
| Companhia Piratininga de Forca e Luz | Brazil | Private |
| Compania General de Combustibles CGC | Argentina | Private |
| Covanta Energy Corporation | United States | Private |
| Credence Systems Corporation | United States | Private |
| Dalkia Utilities Services plc | United Kingdom | Private |
| Datum Inc. | United States | Private |
| DTEK Holdings Limited | Cyprus | Private |
| Earls Court & Olympia Ltd. | United Kingdom | Private |
| Empresa de Energia Mato Grosso Sul (ENERSUL) | Brazil | Private |
| Empresa Electrica de la Frontera S.A. | Chile | Private |
| Empresa Guaracachi S.A. | Bolivia | Private |
| ENECO Holding N.V. | Netherlands | Private |
| Enxco Inc | United States | Private |
| ExxonMobil International Limited | United Kingdom | Private |
| Financiera Energetica Nacional S.A. | Colombia | Private |
| Fudepor, S.L. | Spain | Private |
| GEA AG | Germany | Private |
| Gippsland Offshore Petroleum Ltd | Australia | Private |
| GLP NT Corporation | Canada | Private |
| Hawkeye Renewables, LLC | United States | Private |
| Hidroelectrica Ameghino S.A. | Argentina | Private |
| Hindmarsh Resources Ltd. | Australia | Private |
| Hyder Limited | United Kingdom | Private |
| Ichitaka Co. | Japan | Private |
| Incremental Petroleum Ltd. | Australia | Private |
| Indo Integrated Energy BV | Netherlands | Private |
| Interpipe Limited | Cyprus | Private |
| Ivenergo | Russia | Private |
| Japan Indonesia Oil Co., Ltd. | Japan | Private |
| Konakovskaya GRES | Russia | Private |
| Kostromaenergo | Russia | Private |
| Kurskenergo | Russia | Private |
| Lausitzer Braunkohle AG (LAUBAG) | Germany | Private |
| Liquitek Enterprises Inc | United States | Private |
| Lunds Energikoncernen AB | Sweden | Private |
| Magellan Midstream Holdings, L.P. | United States | Private |
| Maxum Petroleum, Inc. | United States | Private |
| Mazeikiu elektrine AB | Lithuania | Private |
| Midamerican Energy Company | United States | Private |
| Milford Power | United States | Private |
| Monarch Resources Ltd. | Venezuela | Private |
| Monument Oil and Gas plc | United Kingdom | Private |
| Natsionalna Elektricheska Kompania EAD | Bulgaria | Private |
| Northeast Biofuels, LP | United States | Private |
| Nova Energy Ltd. | Australia | Private |
| Oiso Sangyo | Japan | Private |
| Petrochemical Corp of Singapore Ltd | Singapore | Private |
| Petrosearch Energy Corp | United States | Private |
| Phillips-Imperial Petroleum Ltd. | United Kingdom | Private |
| PRATERM SA | Poland | Private |
| Productos Asfalticos S.A. | Spain | Private |
| Puget Sound Energy, Inc. | United States | Private |
| RK Timber Ltd. | United Kingdom | Private |
| Seki Technotron Corporation | Japan | Private |
| Shell Aviation Limited | United Kingdom | Private |
| Shell Hong Kong Limited | Hong Kong | Private |
| Shell Hydrogen BV | Netherlands | Private |
| Sociedad Inversiones Electricas del Sur Dos Ltda | Chile | Private |
| Solar˛ AG | Germany | Private |
| Solv-Ex Corporation | United States | Private |
| Southeastern Electric Cooperative, Inc. | United States | Private |
| Specialty Oil Company, Inc. | United States | Private |
| STATOIL Asia Pacific Pte. Ltd. | Singapore | Private |
| Techem AG & Co | Germany | Private |
| Tersus Energy Plc | United Kingdom | Private |
| The Pittsburg & Midway Coal Mining Co | United States | Private |
| Tidal Energy Marketing Inc | Canada | Private |
| Triam Automotive Inc. | Canada | Private |
| TTG Europe plc | United Kingdom | Private |
| Tung Ding Resources, Inc. | Canada | Private |
| United Refining Company | United States | Private |
| US Bioenergy Corporation | United States | Private |
| Usina Termoeletrica de Anapolis Ltda. | Brazil | Private |
| Valiant Energy Inc. | Canada | Private |
| Vector Wind Energy Inc | Canada | Private |
| Vycon, Inc. | United States | Private |
| Wabash Valley Power Association Inc | United States | Private |
| Weesbach Energietechnologie GmbH | Germany | Private |
| Wind Save Ltd | United Kingdom | Private |
| Windsor Energy Resources, Inc. | United States | Private |
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