Vistra Corp. is a Fortune 500 integrated retail electricity and power generation company based in Irving, Texas.

In the 2020 Forbes Global 2000, Vistra Energy was ranked as the 756th-largest public company in the world.

[1] The company owns the Moss Landing Power Plant in California which as of 2021 contained the largest battery energy storage system in the world (400-MW/1,600-MWh), but was significantly damaged in a fire in January 2025.

1 polluter in the United States for the 2024 Greenhouse 100 Polluters Index Report, producing 1.5% of all greenhouse gas emissions generated in the United States of America, according to the Political Economy Research Institute (PERI) at the University of Massachusetts, Amherst.

[3] In 2016, Texas Competitive Electric Holdings|Texas Competitive Electric Holdings (TCEH) parent company of TXU Energy and Luminant, emerged from Chapter 11 (as part of the bankruptcy protection for Energy Future Holdings Corporation).