| ACES |
| ACES Power Marketing |
| Alston & Bird LLP |
| American Midstream |
| American Public Gas Association |
| Antero Resources |
| ATMOS Energy Corporation |
| Baltimore Gas and Electric |
| Boardwalk Pipeline Partners LP |
| BP Energy |
| BP Energy Company |
| Bridgeport Utilities |
| Cardinal Gas Storage |
| CenterPoint Energy |
| CenterPoint Energy Services |
| CF Industries Inc |
| Cheniere |
| Cheniere Energy |
| Chester County Natural Gas Authority |
| Chevron |
| Citigroup |
| City of Lakeland |
| City of Tallahassee |
| Cleco Power LLC |
| Cleveland Advisory |
| CMC Gas |
| ConocoPhillips |
| ConocoPhillips Company |
| Cooperative Energy |
| Cooperative Energy Incorporated |
| Cox Enterprises, Inc. |
| Cullman-Jefferson Gas |
| Decatur Utilities |
| Defense Logistics Agency – Energy |
| Direct Energy |
| Direct Energy Business Marketing |
| DLA Energy |
| Dominion Energy |
| Dominion Energy / Atlantic Coast Pipeline |
| Dominion Energy Carolina Gas Transmission LLC |
| Dominion Energy Fuel Services, Inc. |
| Dominion Energy Transmission, Inc |
| Dominion Energy, Inc. |
| Duke Energy |
| Dynegy Inc. |
| Eastern Shore Natural Gas Company |
| Eastman Chemical Company |
| Eco-Energy |
| EDF Trading |
| EDF Trading North America, LLC |
| Emera Energy |
| EMEX Utility Group |
| Enbridge |
| Engie |
| Eni Trading & Shipping |
| Entergy Services |
| EQT Midstream |
| Florida Natural Gas |
| Florida Power & Light |
| Florida Public Utilities Company |
| Fountain Inn Natural Gas System |
| Gas South |
| General Electric Co |
| Georgia-Pacific LLC |
| Goldman Sachs / J. Aron |
| Green Plains, Inc. |
| Greenville Utilities |
| Greenville Utilities Commission |
| Greenwood CPW |
| Greer CPW |
| Henkels & McCoy |
| Henkels & McCoy – Pipeline Division |
| Hess |
| Huntsville Utilities |
| ICE |
| ICIS |
| IIR Energy |
| Infinite Energy Inc |
| International Paper Company |
| J. Aron / Goldman Sachs |
| J.M Huber Corp |
| JBS USA Food Company |
| JEA |
| Kentucky Utilities |
| Kimley-Horn |
| Kinder Morgan |
| Kinder Morgan- TGP/KMLP |
| Knoxville Utilities Board |
| Lancaster County Natural Gas Authority |
| Leaf River Energy Center LLC |
| Liberty Energy Trust & Northstar Industries |
| Mansfield Power and Gas |
| Marathon Petroleum Company |
| Marion Gas System |
| Marion Natural Gas |
| McCarter & English, LLC |
| MEAG Power |
| Memphis Light, Gas and Water Division |
| Mercuria Energy Americas |
| Mitsui & Co. Energy Marketing and Services (USA) |
| Mitsui Bussan Commodites |
| MRE Consulting |
| Munich Re Trading, LLC |
| Municipal Gas Authority of Georgia |
| Municipal Gas Authority of Mississippi |
| Natural Gas Intelligence |
| NextEra Energy |
| NextEra Energy Marketing |
| Nextera Energy Resources |
| NG Advantage |
| NG Advantage LLC |
| Northstar Industries, LLC |
| Northwest Alabama Gas District |
| Nutrien |
| Oak Ridge Utility District |
| ODEC |
| Oglethorpe Power Corporation |
| Oldcastle Inc. |
| Orlando Utilities Commission |
| Osaka Gas Trading & Export LLC |
| Oxy |
| Pacific Summit Energy |
| PBF Energy |
| Peninsula Energy Services Company (PESCO) |
| Peoples Gas System, a division of Tampa Electric |
| Piedmont Natural Gas |
| Plains Natural Gas Storage |
| Plastocor Inc. |
| PowerSouth Energy |
| PowerSouth Energy Cooperative |
| Pratt Industries |
| Prometheus Energy Group, Inc. |
| Quorum Business Solutions |
| Rainbow Energy Marketing Corportation |
| Range Resources |
| Ratio Energy, Inc. |
| Repsol |
| Rod Walker & Associates Consultancy |
| S&P Global Platts |
| SCANA Energy Marketing |
| SCE&G & PSNC Energy |
| SEGAS |
| Sequent Energy Management |
| Shell Energy North America |
| Shell Trading Risk Management |
| South Jersey Industries |
| South Jersey Resources Group |
| Southeast Gas |
| Southern Company |
| Southern Company Gas |
| Southern Company Generation |
| Southern Natural Gas Company |
| Spire |
| Spire Gulf |
| Spire Marketing |
| Spotlight Energy, LLC |
| Tampa Electric |
| Tenaska |
| Tenaska Marketing Ventures |
| Texican Natural Gas Company LLC |
| Texla Energy |
| The Energy Authority |
| TransCanada / Columbia Pipeline Group |
| Trellis Energy |
| TVA |
| Uniper Global Commodities |
| Uniper Global Commodities North America LLC |
| United Energy Trading, LLC. |
| United Utility Group |
| Upper Sands Mountain Gas District |
| Vega Energy |
| Virginia Natural Gas |
| Vulcan Materials Company |
| Washington Gas |
| WGL |
| Williams |
| Williams (Transco) |
| York County Natural Gas Authority |