Corporate Members

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

Affiliate Members

• Advanced Mechanical Technology
• Aisin - Gas Heat Pump A/C
• American Gas Association
• Armstrong International
• Bloom Engineering
• Bradford White Corporation
• Burnaby Manufacturing
• Clayton Industries
• Cleaver-Brooks Boilers
• Combustion & Energy
• ECR International-Freewatt
• Ecoalign
• Enershield
• Environ
• Exhausto
• FMC Corp, Lithium Division
• Fulton Thermal
• Frymaster
• Gas Technology Institute
• GREFFEN Systems
• Hurst Boiler and Welding
• Insultech (Shannon Enterprises)
• John Zink
• Lynx Professional Grills
• Metavante (GHR Systems)
• Miura Boiler
• Natural Gas Technology Center (Canada)
• Natural Resources Canada (CANMET)
• NovelAire
• Novitherm Canada Inc
• Precision Temp
• Relms, Inc
• Rheem Water Heaters
• Rinnai
• Robur Corporation
• RPA Associates Inc
• Robur
• SEMCO
• Schwank Heaters
• Sidel Systems USA Inc
• SOFAME
• Solar Turbines
• Superior Boiler and Welding
• TAS
• Team Consulting
• Tecogen
• TEMP-Air
• York International