Connecticut:Connecticut Light & PowerThe United Illuminating CompanyDelaware:Delmarva PowerDelaware Electric Co-OpMaine:Central Maine PowerBangor Hydro Electric CompanyMaryland:Baltimore Gas and ElectricSouthern Maryland Electric CooperativePotomac EdisonChoptank Electric CooperativeMassachusetts:National Grid (Boston Gas)NSTAR (Boston Edison)Northeast Utilities (Western Massachusetts Electric)New Hampshire:Public Service of New Hampshire (Northeast Utilities)Unitil EnergyNew Hampshire Electric Co-OpLiberty UtilitiesNational GridNew Jersey:Jersey Central Power & LightPSEG (Public Service Electric and Gas)Atlantic City ElectricRockland Electric Company (Pike County Light & Power Co.)New York:Consolidated EdisonLong Island Power AuthorityCentral Hudson Gas & ElectricNew York State Electric & GasRockland Electric Company (Pike County Light & Power Co.)Rochester Gas & ElectricNational GridNorth Carolina:Duke EnergyDominion North CarolinaProgress Energy CarolinasPennsylvania:PPL ElectricPECORhode Island:National Grid Rhode IslandSouth Carolina:South Carolina Electric & GasProgress Energy CarolinasVirginia:Dominion Virginia PowerAppalachian PowerWashington, D.C.:Pepco
Connecticut Light & PowerThe United Illuminating Company
Delmarva PowerDelaware Electric Co-Op
Central Maine PowerBangor Hydro Electric Company
Baltimore Gas and ElectricSouthern Maryland Electric CooperativePotomac EdisonChoptank Electric Cooperative
National Grid (Boston Gas)NSTAR (Boston Edison)Northeast Utilities (Western Massachusetts Electric)
Public Service of New Hampshire (Northeast Utilities)Unitil EnergyNew Hampshire Electric Co-OpLiberty UtilitiesNational Grid
Jersey Central Power & LightPSEG (Public Service Electric and Gas)Atlantic City ElectricRockland Electric Company (Pike County Light & Power Co.)
Consolidated EdisonLong Island Power AuthorityCentral Hudson Gas & ElectricNew York State Electric & GasRockland Electric Company (Pike County Light & Power Co.)Rochester Gas & ElectricNational Grid
Duke EnergyDominion North CarolinaProgress Energy Carolinas
PPL ElectricPECO
National Grid Rhode Island
South Carolina Electric & GasProgress Energy Carolinas
Dominion Virginia PowerAppalachian Power
Pepco