Illinois: Commonwealth Edison ComEd, Ameren Illinois, Nicor Gas, North Shore Gas, Peoples Gas Maryland: Delmarva Power, Pepco, Baltimore Gas & Electric (BGE), Potomac Edison New York: Central Hudson, Con Edison (ConEd), National Grid/Keyspan, National Grid/Niagara Mohawk, National Fuel Gas, NYSEG, Orange & Rockland, Rochester Gas & Electric (RG&E) New Jersey: Atlantic City Electric (ACE), JCP&L, New Jersey Natural Gas (NJNG), PSE&G, Rockland Electric Co., South Jersey Gas (SJG) Ohio: AEP – Columbus Southern Power, AEP – Ohio Power Company, Cleveland Electric Illuminating Co. (CLI), Columbia Gas (COH), Duke Energy (DUKE), Ohio Edison (OHIOED), Toledo Edison (TOLEDOED) Pennsylvania: Columbia Gas PA (CPA), Duquesne Light, Met-Ed, National Fuel Gas, PECO, Penelec, Penn Power, PPL, UGI Utilities, West Penn/Allegheny Washington D.C.: PEPCO – DC, DCPSC How to Choose, SCPSC Compare Offers, Washington Gas