FirstEnergy Corp. engages in the generation, transmission, and distribution of electricity, as well as energy management and other energy-related services through its subsidiaries. It operates through the following business segments: Regulated Distribution, Regulated Transmission, and Competitive Energy Services (CES). The Regulated Distribution segment distributes electricity through FirstEnergy's utility operating companies, serving various customers within Ohio, Pennsylvania, West Virginia, Maryland, New Jersey and New York. The Regulated Transmission segment transmits electricity through transmission facilities owned and operated by FirstEnergy's utilities and the regulatory assets. The CES segment supplies electricity to end-use customers through retail and wholesale arrangements, including competitive retail sales to customers primarily in Ohio, Pennsylvania, Illinois, Michigan, New Jersey and Maryland, and the provision of partial POLR and default service for some utilities in Ohio, Pennsylvania and Maryland, including the utilities. The company was founded in 1996 and is headquartered in Akron, OH.