| Name | Country | Market Cap (US$) |
|---|
| Electricite de France SA | France | 109,828 |
| GDF Suez | France | 99,386 |
| E.ON AG | Germany | 78,188 |
| BG Group plc | United Kingdom | 64,335 |
| Enel S.p.A. | Italy | 58,324 |
| Iberdrola S.A. | Spain | 49,643 |
| RWE AG | Germany | 47,116 |
| The Tokyo Electric Power Company. Inc. | Japan | 34,559 |
| Endesa SA | Spain | 33,560 |
| Exelon Corporation | United States | 31,841 |
| National Grid PLC | United Kingdom | 27,631 |
| CEZ a.s. | Czech Republic | 26,271 |
| The Southern Company | United States | 25,631 |
| Centrica plc | United Kingdom | 22,209 |
| TransCanada Corporation | Canada | 22,127 |
| China Yangtze Power Company Limited | China | 21,976 |
| Dominion Resources, Inc. | United States | 21,967 |
| Duke Energy Corporation | United States | 21,825 |
| FPL Group, Inc. | United States | 21,692 |
| The Kansai Electric Power Co., Inc. | Japan | 21,596 |
| Alstom | France | 21,164 |
| Gas Natural SDG S.A. | Spain | 19,275 |
| Areva SA | France | 19,107 |
| Chubu Electric Power Co., Inc. | Japan | 18,449 |
| Scottish & Southern Energy | United Kingdom | 17,293 |
| EDP-Energias de Portugal SA | Portugal | 17,039 |
| Centrais Eletricas Brasileiras | Brazil | 16,605 |
| CLP Holdings Limited | Hong Kong | 16,393 |
| The Hong Kong & China Gas Co., Ltd. | Hong Kong | 16,113 |
| Public Service Enterprise Group Inc. | United States | 15,989 |
| PG&E Corporation | United States | 15,929 |
| Enbridge Inc. | Canada | 15,908 |
| Southwestern Energy Company | United States | 15,576 |
| American Electric Power Co., Inc. | United States | 15,362 |
| Federal Grid Company of Unified Energy System OJSC | Russia | 15,231 |
| Entergy Corporation | United States | 15,126 |
| Oesterreichische Elektrizitaetswirtschafts AG | Austria | 14,800 |
| Energie Baden-Württemberg AG (EnBW) | Germany | 14,586 |
| Huaneng Power International Co. | China | 14,528 |
| Sempra Energy Corporation | United States | 13,266 |
| FirstEnergy Corporation | United States | 13,157 |
| Saudi Electricity Company | Saudi Arabia | 12,277 |
| Alpiq Holding Ltd. | Switzerland | 12,188 |
| The Williams Companies, Inc. | United States | 11,972 |
| Consolidated Edison, Inc. | United States | 11,821 |
| Enersis S.A. | Chile | 11,767 |
| PPL Corporation | United States | 11,685 |
| Hongkong Electric Holdings Ltd. | Hong Kong | 11,539 |
| GAIL (India) Limited | India | 11,399 |
| Edison International | United States | 11,188 |
| Cia Energetica Minas Gerais (CEMIG) | Brazil | 11,126 |
| Progress Energy, Inc. | United States | 10,992 |
| Suez Environnement Company | France | 10,959 |
| Tenaga Nasional Bhd. | Malaysia | 10,835 |
| Tokyo Gas Co., Ltd. | Japan | 10,641 |
| RusHydro JSC | Russia | 10,541 |
| Tohoku Electric Power Company, Inc. | Japan | 10,129 |
| Kyushu Electric Power Co., Inc. | Japan | 9,829 |
| Perusahaan Gas Negara (Persero) Tbk | Indonesia | 9,528 |
| Power Grid Corporation of India Limited | India | 9,434 |
| Xcel Energy, Inc. | United States | 9,361 |
| CPFL Energia S.A. | Brazil | 9,134 |
| The AES Corporation | United States | 8,812 |
| Terna Spa (Transmissione Elettricita Rete Nazionale) | Italy | 8,286 |
| Polskie Gornictwo Naftowe I Gazownictwo SA | Poland | 8,273 |
| Edison SpA | Italy | 8,247 |
| NHPC Limited | India | 8,174 |
| Tractebel Energia, S.A. | Brazil | 8,122 |
| Osaka Gas Co., Ltd. | Japan | 7,547 |
| Reliance Power Ltd | India | 7,406 |
| International Power plc | United Kingdom | 7,223 |
| The Chugoku Electric Power Co., Inc. | Japan | 7,005 |
| El Paso Corporation | United States | 6,865 |
| The Tata Power Company Limited | India | 6,797 |
| DTE Energy Company | United States | 6,694 |
| Constellation Energy Group, Inc. | United States | 6,567 |
| Interconexion Electrica S.A. | Colombia | 6,351 |
| Shikoku Electric Power Co., Inc. | Japan | 6,293 |
| NRG Energy, Inc. | United States | 6,192 |
| Ameren Corporation | United States | 6,160 |
| GD Power Development Co., Ltd | China | 5,906 |
| AGL Energy Ltd | Australia | 5,725 |
| ONEOK Partners, L.P. | United States | 5,701 |
| Companhia Paranaense Energia (COPEL) | Brazil | 5,577 |
| Datang International Power Generation Company Limited | China | 5,517 |
| United Utilities Group PLC | United Kingdom | 5,490 |
| EQT Corp | United States | 5,458 |
| Boardwalk Pipeline Partners LP | United States | 5,446 |
| Wisconsin Energy Corporation | United States | 5,336 |
| Manila Electric Company (MERALCO) | Philippines | 5,175 |
| CenterPoint Energy | United States | 5,149 |
| Shenergy Company Limited | China | 5,096 |
| Reliance Infrastructure Ltd. | India | 5,089 |
| Calpine Corporation | United States | 4,946 |
| Canadian Utilities Ltd. | Canada | 4,806 |
| Public Power Corporation S.A. | Greece | 4,753 |
| The Hokuriku Electric Power Co. | Japan | 4,719 |
| Shanghai Chengtou Holding Co., Ltd. | China | 4,632 |
| Sociedad General de Aguas de Barcelona, S.A. | Spain | 4,427 |
| Adani Power Limited | India | 4,422 |
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