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