FirstEnergy Corp. (NYSE: FE), is a iversified energy company headquartered in Akron, Ohio. Its subsidiaries and affiliates are involved in the generation, transmission, and distribution of electricity, as well as energy management and other energy-related services. Its seven electric utility operating companies comprise the nation’s fifth largest investor-owned electric system, based on serving 4.5 million customers within a 36,100-square-mile (93,000 km²) area of Ohio, Pennsylvania, and New Jersey; and its generation subsidiaries control more than 14,000 megawatts of capacity. In 2007, FirstEnergy ranked 212 on the Fortune 500 list of the largest public corporations in America.