OGE Energy Corp. (OGE Energy) is an energy and energy services provider offering physical delivery and related services for both electricity and natural gas in the south central United States. The Company operates through two business segments: electric utility and natural gas midstream operations. The electric utility segment generates, transmits, distributes and sells electric energy in Oklahoma and western Arkansas. Its operations are conducted through Oklahoma Gas and Electric Company (OG&E), a wholly owned subsidiary of the Company and an electric utility-based in Oklahoma with its franchised service territory at the Fort Smith, Arkansas area. The natural gas midstream operations segment through its investment in Enable Midstream Partners, LP (Enable), through its wholly owned subsidiary OGE Holdings, which is engaged in the business of gathering, processing, transporting and storing natural gas.