Name
 | URL | Country
| Market Cap (US$)
|
|---|
| BP plc | http://www.bp.com | United Kingdom | 151,247 |
| BG Group plc | http://www.bg-group.com/ | United Kingdom | 49,304 |
| GDF Suez | http://www.gdfsuez.com | France | 47,098 |
| National Grid PLC | http://www.nationalgrid.com | United Kingdom | 24,613 |
| Centrica plc | http://www.centrica.co.uk | United Kingdom | 19,445 |
| TransCanada PipeLines Limited | http://www.tcpipelineslp.com/ | Canada | 16,903 |
| Tokyo Gas Co., Ltd. | http://www.tokyo-gas.co.jp | Japan | 13,308 |
| Enbridge Inc. | http://www.enbridge.com | Canada | 12,326 |
| Southwestern Energy Company | http://www.swn.com | United States | 10,674 |
| The Hong Kong & China Gas Co., Ltd. | http://www.hkcg.com | Hong Kong | 10,665 |
| Sempra Energy Corporation | http://www.sempra.com | United States | 10,659 |
| Osaka Gas Co., Ltd. | http://www.osakagas.co.jp/ | Japan | 9,875 |
| Snam Rete Gas SpA | http://www.snamretegas.it | Italy | 9,784 |
| The Williams Companies, Inc. | http://www.williams.com/ | United States | 8,813 |
| Edison SpA | http://www.edison.it | Italy | 6,810 |
| Distrigaz SA | http://www.distri.be | Belgium | 6,583 |
| A2A SpA | http://www.a2a.eu | Italy | 5,653 |
| GAIL (India) Limited | http://www.gailonline.com | India | 5,346 |
| Toho Gas Co., Ltd. | http://www.tohogas.co.jp | Japan | 3,665 |
| Integrys Energy Group Inc | http://www.integrysgroup.com | United States | 3,380 |
|
