Name
 | URL | Country
| Market Cap (US$)
|
|---|
| Royal Dutch/Shell Group of Companies | http://www.shell.com | Netherlands | Private |
| Talisman Energy Inc. | http://www.talisman-energy.com/ | Canada | 10,736 |
| Progress Energy, Inc. | http://www.progress-energy.com | United States | 10,695 |
| Spectra Energy Corp. | http://www.spectraenergy.com/ | United States | 10,119 |
| Enterprise Products Partners LP | http://www.eprod.com | United States | 9,830 |
| UGI Corporation | http://www.ugicorp.com | United States | 2,666 |
| Dynegy, Inc. | http://www.dynegy.com | United States | 2,006 |
| Vermilion Energy Trust | http://www.vermilionenergy.com | Canada | 1,546 |
| Peyto Energy Trust | http://www.peyto.com/ | Canada | 917 |
| Atlas Energy Resources LLC | http://www.atlasenergyresources.com | United States | 893 |
| Petronet LNG Ltd | http://www.petronetlng.com/ | India | 554 |
| Clean Energy Fuels Corp | http://www.cleanenergyfuels.com | United States | 318 |
| Indus Gas Limited | NA | United Kingdom | 315 |
| Quicksilver Gas Services LP | http://www.qrinc.com | United States | 239 |
| Energy World Corporation Ltd | NA | Australia | 229 |
| Gulfsands Petroleum PLC | http://www.gulfsands.net/ | United Kingdom | 223 |
| Star Gas Partners, L.P. | http://www.star-gas.com | United States | 177 |
| VNIPIgazdobycha | NA | Russia | 165 |
| Siamgas and Petrochemicals PCL | http://www.siamgas.com | Thailand | 127 |
| Sydney Gas Ltd | http://www.sydneygas.com | Australia | 117 |
|
