Vistra Corp. is a holding company, which engages in the provision of electricity and power generation. The company is headquartered in Irving, Texas and currently employs 6,850 full-time employees. The company went IPO on 2016-09-28. The company operates a reliable power generation fleet of natural gas, nuclear, coal, solar, and battery energy storage facilities while taking an innovative, customer-centric approach to its retail business. Its segments include Retail, Texas, East, West, and Asset Closure. The Retail segment is engaged in retail sales of electricity and natural gas to residential, commercial and industrial customers. The Texas and East segments are engaged in electricity generation, wholesale energy sales and purchases, commodity risk management activities, fuel procurement, and logistics management. The West segment represents results from the CAISO market, including its battery ESS projects at its Moss Landing power plant site. The Asset Closure segment is engaged in the decommissioning and reclamation of retired plants and mines.