| Name | Country | Market Cap (US$) |
|---|
| Empire Oil Co | United States | Private |
| Empire Petroleum Marketing Llc | United States | Private |
| Empresa Boliviana de Distribucion S.A. | Bolivia | Private |
| Empresa Colombiana De Gas | Colombia | Private |
| Empresa Colombiana de Petroleos (ECOPETROL) | Colombia | Private |
| EMPRESA DE ELECTRICIDADE E AGUA ELECTRA S A | Cape Verde | Private |
| Empresa De Gas De La V Region S.A. | Chile | Private |
| Empresa Electrica Alto Cachapoal, Srl | Chile | Private |
| Empresa Nacional Del Petroleo | Chile | Private |
| EN.TRA. SPA | Italy | Private |
| ENAJI ENGINEERING K.K. | Japan | Private |
| EnAlpin AG | Switzerland | Private |
| Enap Refinerias S.A. | Chile | Private |
| Enbridge (U.S.) Inc | United States | Private |
| Enbridge Energy Distribution Inc | Canada | Private |
| Enbridge Gas New Brunswick Inc | Canada | Private |
| Enbridge Gas Services Us Inc | United States | Private |
| Enbridge Pipelines (NW) Inc | Canada | Private |
| Enbridge Pipelines (Saskatchewan) Inc | Canada | Private |
| Enbridge Pipelines (Virden) Inc | Canada | Private |
| Encal Energy Ltd. | Canada | Private |
| Encana (U K) Ltd | United Kingdom | Private |
| Encana Oil & Gas | Canada | Private |
| EnCana Oil & Gas (USA) Inc. | United States | Private |
| Encore Coring & Drilling Inc | Canada | Private |
| Encounter Energy Ltd. | Canada | Private |
| Endeavor Energy Resources, Lp | United States | Private |
| ENDESA ENERGIA S.A. | Spain | Private |
| Endev Energy Inc. | Canada | Private |
| Endless Energy Corporation | United States | Private |
| Enduring Resources, LLC | United States | Private |
| Enec Energie Infra Utrecht N.V. | Netherlands | Private |
| Eneco Energie Delfland N.V. | Netherlands | Private |
| ENEL RETE GAS SPA | Italy | Private |
| ENEL SOLE SRL | Italy | Private |
| Enel Trade SpA | Italy | Private |
| ENEMALTA CORPORATION | Malta | Private |
| ENEOS FRONTIER CORPORATION | Japan | Private |
| Enerchem Access Ltd | United States | Private |
| Enerco B.V. | Netherlands | Private |
| Enercrest Inc | United States | Private |
| Energas Company | United States | Private |
| ENERGAS SUEDGAS | Italy | Private |
| Energen Resources Corporation | United States | Private |
| Energen Resources Inc | United States | Private |
| ENERGETICOS ALMERIA SA | Spain | Private |
| ENERGETICOS ANDALUCIA SL | Spain | Private |
| Energéticos Centrífugados Del Norte, S.A. de C.V. | Mexico | Private |
| ENERGETICOS DE LA MANCHA SA | Spain | Private |
| Energi Benzin Vindeballe ApS Under Konkurs | Denmark | Private |
| Energi Randers Supply A/S | Denmark | Private |
| ENERGIA PETROLI 2000 SRL | Italy | Private |
| Energie AG Iserlohn-Menden | Germany | Private |
| Energie AG Oberösterreich | Austria | Private |
| Energie Beheer Nederland B.V. | Netherlands | Private |
| Energie und Wasser Lübeck GmbH | Germany | Private |
| Energie und Wasser Potsdam gMBh | Germany | Private |
| Energie und Wasserversorgung Bonn/Rhein-Sieg GmbH (EnW Bonn/Rhei | Germany | Private |
| Energie Wasser Niederrhein GmbH | Germany | Private |
| Energie- und Wasserversorgung Altenburg GmbH | Germany | Private |
| Energie- und Wasserversorgung Altenburg GmbH | Germany | Private |
| Energie- und Wasserversorgung Bünde Gesellschaft mit beschränkte | Germany | Private |
| Energie- und Wasserversorgung Hamm GmbH | Germany | Private |
| Energiebedrijf Midden-Holland N.V. | Netherlands | Private |
| ENERGIECOMFORT Energie- und Gebäudemanagement GmbH | Austria | Private |
| Energieversorgung Apolda GmbH | Germany | Private |
| Energieversorgung Greiz GmbH | Germany | Private |
| Energieversorgung Inn-Salzach GmbH | Germany | Private |
| Energieversorgung Leverkusen GmbH & Co. KG (EVL) | Germany | Private |
| Energieversorgung Nordhausen GmbH | Germany | Private |
| Energieversorgung Selb-Marktredwitz GmbH | Germany | Private |
| Energieversorgung Sylt GmbH | Germany | Private |
| Energotrans A.S. | Czech Republic | Private |
| ENERGY ADVANCE CO.,LTD. | Japan | Private |
| Energy Africa Ltd. | South Africa | Private |
| Energy Alloys Services Llc | United States | Private |
| ENERGY COAL SPA | Italy | Private |
| Energy Corporation of America | United States | Private |
| Energy Financing Team (Switzerland) AG | Switzerland | Private |
| Energy Maintenance Services Group I, LLC | United States | Private |
| Energy Merchant, Llc | United States | Private |
| Energy North Inc. | Canada | Private |
| ENERGY NORTH SEA LTD | United Kingdom | Private |
| ENERGY PARTNERSHIP (GAS) PTY LIMITED | Australia | Private |
| Energy Resources Technology Inc | United States | Private |
| Energy River Corporation | United States | Private |
| Energy Search, Inc. | United States | Private |
| ENERGY SERVICE SRL | Italy | Private |
| Enerji Yatirimlari AS | Turkey | Private |
| EnerMark Inc | Canada | Private |
| ENERPETROLI SRL | Italy | Private |
| Enerpro Midstream Company | Canada | Private |
| ENERPULP - COGERAÇAO ENERGETICA DE PASTA, S.A. | Portugal | Private |
| Enerquest Corporation | United States | Private |
| Enersul Limited Partnership | Canada | Private |
| ENERTICA - DISTRIBUIÇAO DE COMBUSTIVEIS, SOCIEDADE UNIPESSOAL, L | Portugal | Private |
| Enervest Management Partners, Ltd. | United States | Private |
| Enervest Operating Llc | United States | Private |
| ENEX INC. | Japan | Private |
| ENEX Resources Corporation | United States | Private |
|
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