OGE Energy Corp., through its subsidiary, operates as an energy services provider in the United States. The company generates, transmits, distributes, and sells electric energy. It also owns and operates coal-fired, natural gas-fired, wind-powered, and solar-powered generating assets. The company provides retail electric service to approximately 709,000 customers that covers a service area of approximately 30,000 square miles. OGE Energy Corp. was founded in 1902 and is based in Oklahoma City, Oklahoma.