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Vistra Corp. is one of the largest power producers and retail energy providers in the US. It owns 44 gigawatts of generation capacity, including natural gas (27 GW), nuclear (6.5 GW), coal (8.7 GW), and solar and battery storage (1.3 GW). The Cogentrix acquisition will add 5.5 GW of gas generation. Vistra's retail electricity business serves 5 million customers in 20 states, including almost a third of all Texas electricity consumers. Vistra emerged from the Energy Future Holdings bankruptcy as a stand-alone entity in 2016.

Shell is an integrated oil and gas company that explores for, produces, and refines oil around the world. In 2023, it produced 1.5 million barrels of liquids and 7.3 billion cubic feet of natural gas per day. At end-2023, reserves stood at 9.6 billion barrels of oil equivalent, 49% of which, consisted of liquids. Its production and reserves are in Europe, Asia, Oceania, Africa, and North and South America. The company operates refineries with capacity of 1.6 mmb/d located in the Americas, Asia, Africa, and Europe and sells about 12 million tons per year of chemicals. Its largest chemical plants, often integrated with its local refineries, are in Central Europe, China, Singapore, and North America.