Inspects, tests, disassembles, adjusts, repairs, installs, and assembles electrical, mechanical, hydraulic, vacuum, and pneumatic parts and units of gasoline, diesel, hydraulic, and electric-powered automotive, construction, and material handling equipment. Headquartered in Akron, Ohio, FirstEnergy includes one of the nation''s largest investor-owned electric systems, more than 24,000 miles of transmission lines that connect the Midwest and Mid-Atlantic regions, and a regulated generating fleet with a total capacity of more than 3,500 megawatts.