Alliance Pipeline, Inc.
Ameren Services Co.
Anadarko Petroleum Corp.
Atlas Pipeline Mid-Continent, LLC
Atmos Energy
Avista Corporation
Big Horn
Black Hills Corp.
Blueknight Energy
BP Pipeline
Boardwalk Pipeline
Buckeye Pipe Line Company
CenterPoint Energy
ChevronTexaco
Citgo Petroleum
Citgo Refinery—Corpus Christi
Colonial Pipeline Company
ConocoPhillips
Consumers Energy
Copano Energy
CPS Energy
DCP Midstream
Denbury Onshore, LLC.
Devon Energy Corporation
Distrigas of Massachusetts, LLC
Duke Energy
El Paso Natural Gas
Enbridge Energy Partners
Enbridge Gas Transportation
EnCana Oil & Gas (USA) Inc.
EOG Resources
Enterprise
EQT Corporation
Equistar Chemicals, LP
Explorer Pipeline Company
ExxonMobil Beaumont Refinery
ExxonMobil Production
ExxonMobil Pipeline
Flint Hills Resources, LP
Freeport LNG Development
Golden Pass LNG, LLC
Gulf South Pipeline Company, LP.
Gulfstream Natural Gas
Holly Energy Partners
Jayhawk Pipeline, L.L.C.
Kern River Gas Transmission
Koch Industries Inc.
Kinder Morgan, Inc.
Laser Northeast Gathering Co., LLC.
Loop, Inc.
Louis Dreyfus
Magellan Midstream Partners, L.P.
Marathon Petroleum Company, LLC
