NRG Energy, Inc., together with its subsidiaries, operates as an integrated power company in the United States. It operates through Texas, East, and West segments. The company is involved in producing and selling electricity and related products and services to approximately residential, commercial, industrial, and wholesale customers. It generates electricity using natural gas, coal, oil, solar, nuclear, and battery storage. The company also provides system power, distributed generation, renewable products, backup generation, storage and distributed solar, demand response, and energy efficiency and advisory services, as well as carbon management and specialty services. In addition, it trades in electric power, natural gas, and related commodities; environmental products; weather products; and financial products, including forwards, futures, options, and swaps. Further, the company procures fuels; and sells energy, services, and products and services under the NRG, Reliant, Direct Energy, Green Mountain Energy, Stream, and XOOM Energy. NRG Energy, Inc. was founded in 1989 and is headquartered in Houston, Texas.