American Electric Power Company, Inc., an electric public utility holding company, engages in the generation, transmission, and distribution of electricity for sale to retail and wholesale customers in the United States. It operates through Vertically Integrated Utilities, Transmission and Distribution Utilities, AEP Transmission Holdco, and Generation & Marketing segments. The company generates electricity using coal and lignite, natural gas, nuclear, and hydroelectric, as well as solar, wind, and other energy sources. It also supplies and markets electric power at wholesale to other electric utility companies, rural electric cooperatives, municipalities, and other market participants. The company owns, leases, or controls approximately 4,004 railcars, 468 barges, 8 towboats, and a coal handling terminal with approximately 18 million tons of annual capacity. American Electric Power Company, Inc. was founded in 1906 and is headquartered in Columbus, Ohio.