Corporate Members

• AGL Resources
• Alagasco
• Atmos Energy
• Avista Utilities
• CenterPoint Energy - Texas
• CenterPoint Energy Minnegasco
• Chesapeake Utilities
• Citizens Gas & Coke Utility
• CPS - San Antonio
• Dominion Energy, Inc.
• DTE Energy (MichCon Gas Co.)
• Enbridge Gas Distribution Inc.
• Entergy
• Florida Public Gas Group
• Gaz Metropolitain, Inc.
• The Gas Company (Hawaii)
• KeySpan Energy Co.
• Laclede Gas Company
• Manitoba Hydro
• Mobile Gas Service Corp
• Municipal Gas Authority of Georgia
• National Fuel Gas Distribution Corp.
• Nicor Inc.
• Northwest Natural
• Oak Ridge Utility District
• Okaloosa Gas
• ONEOK - Kansas Gas
• PECO (Phil. an Exelon Energy Company)
• Peoples Energy Corp. (Chicago)
• Philadelphia Gas Works
• Piedmont Natural Gas
• PPL Gas Utilities
• PSEG - New Jersey
• Puget Sound Energy
• Questar
• Richmond, VA (City of)
• Southeast Alabama Gas District
• South Jersey Gas Co
• Southern California Gas Co.
• Southern Natural Gas Company - El Paso
• Southwest Gas Corporation
• TECO Peoples - Florida
• UGI Utilities
• Union Gas Ltd.
• VECTREN
• Yankee Gas ( Northeast Utilities)

Affiliate Members

• Advanced Mechanical Technology
• Aisin - Gas Heat Pump A/C
• American Gas Association
• Bloom Engineering
• Bradford White Corporation
• Burnaby Manufacturing
• Clayton Boilers
• Cleaver-Brooks Boilers
• Climate Energy
• Combustion & Energy
• Cross Country Home Services
• Environ
• Exhausto
• FLIR Systems (Infrared)
• FMC Corp, Lithium Division
• Frymaster
• Gas Technology Institute
• Hurst Boiler and Welding
• Integrated CHP Systems
• John Zink Company
• Lynx Professional Grills
• Metavante (GHR Systems)
• Natural Gas Technology Center (Canada)
• Natural Resources Canada (CANMET)
• Navien America
• NovelAire
• Novitherm Canada Inc
• Precision Temp
• Relms, Inc
• Rheem Water Heaters
• Rinnai
• Robur Corporation
• RPA Engineering
• SEMCO
• Schwank Heaters
• Solar Turbines
• Superior Boiler and Welding
• Team Consulting
• TEMP-Air
• TracPipe
• Waukesha
• York International