Dynegy Inc., through its subsidiaries, produces and sells electric energy, capacity, and ancillary services in the United States. It operates in three segments, Coal, IPH, and Gas. The company sells its services on a wholesale basis from its power generation facilities. It has a fleet of 15 power plants in 5 states totaling approximately 13,000 megawatts of generating capacity. The company serves a range of customers, including regional transmission organizations, independent system operators, integrated utilities, municipalities, electric cooperatives, transmission and distribution utilities, and power marketers; financial participants, such as banks and hedge funds; and residential, commercial, and industrial end-users. Dynegy Inc. was founded in 1984 and is headquartered in Houston, Texas.