Dynegy Inc., through its subsidiaries, engages in the production and sale of electric energy, capacity, and ancillary services in the United States. It sells electric energy, capacity, and ancillary services on a wholesale basis from its natural gas-fired, coal-fired, and oil-fired power generation facilities. As of December 31, 2008, the company had a fleet of 27 operating power plants in 13 states totaling approximately 18,000 megawatts of generating capacity. Its customers include regional transmission organizations, independent system operators, integrated utilities, municipalities, electric cooperatives, transmission and distribution utilities, industrial customers, power marketers, other power generators, commercial end-users, and financial participants, such as banks and hedge funds. The company was founded in 1985 and is based in Houston, Texas.