NRG Energy, Inc. engages in the production, sale, and distribution of energy and energy services. The company is headquartered in Houston, Texas and currently employs 18,131 full-time employees. The company went IPO on 2004-02-05. The Company’s businesses are the sale of electricity and natural gas to residential, commercial and industrial and wholesale customers, supported by its wholesale electric generation, as well as the sale of smart home products and services. Across the United States and Canada, the Company delivers sustainable solutions, predominately under the brand names such as NRG, Reliant, Direct Energy, Green Mountain Energy and Vivint. The firm's segments include Texas, East, West/Services/Other, Vivint Smart Home and Corporate activities. The company sells a variety of products to residential and small commercial customers, including retail electricity and energy management, natural gas, carbon offsets, back-up power stations, portable power, portable solar and portable lighting. The firm owns and leases a diversified wholesale generation portfolio with approximately 13 gigawatts of fossil fuel and renewable generation capacity at 19 plants.