Companies Currently listed on the AGA Mutual Assistance Database 4/4/2019 Ameren Illinois Liberty Utilities Company Ameren Missouri Mears Group, Inc. American Gas Association MidAmerican Energy Company Atlanta Gas Light Montana-Dakota Utilities Co. Atmos Energy Corporation National Fuel Gas Distribution Corporation Avista National Grid BGE, An Exelon Company New Jersey Natural Gas Company Black Hills Energy New Mexico Gas Company Cascade Natural Gas Corporation New York State Electric & Gas Corporation CenterPoint Energy NIPSCO Central Hudson Gas & Electric Corporation Northern Natural Gas Company Chesapeake Utilities Corporation NPL Construction Co. Citizens Energy Group NW Natural City of Corpus Christi Oklahoma Natural Gas Colorado Springs Utilities ONE Gas, Inc. Columbia Gas of Kentucky Orange & Rockland Utilities, Inc. Columbia Gas of Maryland Pacific Gas and Electric Company Columbia Gas of Massachusetts PECO, An Exelon Company Columbia Gas of Ohio Peoples Natural Gas Columbia Gas of Pennsylvania Philadelphia Gas Works Columbia Gas of Virginia Public Service Electric and Gas Company Connecticut Natural Gas Corporation Puget Sound Energy Consolidated Edison Company of New York, Inc. Roanoke Gas Company Consumers Energy Company Rochester Gas & Electric Corporation CoServ Gas San Diego Gas & Electric Company Delmarva Power, An Exelon Company SEMCO Energy Gas Company Dominion Energy Ohio Sensit Technologies Dominion Energy Utah South Jersey Gas Company Dominion Energy West Virginia Southern California Gas Company DTE Energy Southern Company Gas DTE Gas Company Southwest Gas Corporation Duke Energy Corporation Spire Inc. Easton Utilities Susquehanna Technologies Elster Instromet, Inc. TECO Peoples Gas, an Emera Co. Enbridge Gas Inc. Texas Gas Service ENSTAR Natural Gas Company The Energy Cooperative Entergy New Orleans, LLC UGI Utilities, Inc. Equitable Gas Co. Underground Construction Co., Inc. Eversource Energy Union Gas, An Enbridge Company Florida Public Utilities Company UniSource Energy Services Gainesville Regional Utilities Unitil Corp. Greenville Utilities Valley Energy, Inc. HearthStone Utilities, Inc. Vectren Corporation Heath Consultants Incorporated Vermont Gas Systems, Inc. Honeywell Smart Energy Gas Americas Washington Gas Light Company InfraSource We Energies Intermountain Gas Company WEC Energy Group Itron, Inc. Westfield Gas & Electric Department Kansas Gas Service Xcel Energy Inc. LG&E-KU, PPL Companies.