Metropolitan Edison Company. The Group's principal activities are the distribution and sale of electric energy in an area of approximately 3,300 square miles in eastern Pennsylvania. The Group also sells, purchases and interchanges electric energy with other electric companies. The Group's retail customers are metered on a cycle basis. Revenue is recognized for unbilled electric service through the end of the year. The Group is a wholly owned electric utility operating subsidiary of FirstEnergy Corp. The Group became a wholly owned subsidiary of FirstEnergy Corp on the merger of FirstEnergy Corp and GP, Inc on 01-Nov-2001.