NRG Energy, Inc. engages in the production, sale, and distribution of energy and energy services. It operates through the following segments: Generation, Retail, and Corporate. The Generation segment includes all power plant activities, domestic and international, as well as renewables. The Retail segment includes mass customers and business solutions, and other distributed and reliability products. The Corporate segment includes residential solar and electric vehicle services. The company was founded in 1989 and is headquartered in Houston, TX.