Vistra Corp., together with its subsidiaries, engages in the electricity business in the United States. It operates through six segments: Retail, Texas, East, West, Sunset, and Asset Closure. The company retails electricity and natural gas to residential, commercial, and industrial customers across 20 states in the United States and the District of Columbia. It is also involved in the electricity generation, wholesale energy sales and purchases, commodity risk management, fuel production, and fuel logistics management activities. The company serves approximately 4.5 million residential, commercial, and industrial customers. It has a generation capacity of approximately 38,700 megawatts with a portfolio of natural gas, nuclear, coal, solar, and battery energy storage facilities. The company was formerly known as Vistra Energy Corp. and changed its name to Vistra Corp. in July 2020. Vistra Corp. was founded in 1882 and is based in Irving, Texas.