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Vistra Energy is one of the largest power producers and retail energy providers in the US Following the 2024 Energy Harbor acquisition, Vistra owns 41 gigawatts of nuclear, coal, natural gas, and solar power generation along with one of the largest utility-scale battery projects in the world. Its 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. It acquired Dynegy in 2018.

NRG Energy is one of the largest retail energy providers in the US, with 6 million customers. Vivint Smart Home, which NRG acquired in 2023, has 2 million home services customers. NRG also is one of the largest US independent power producers, with 13 gigawatts of coal, gas, and oil power generation capacity primarily in Texas. NRG exited Chapter 11 bankruptcy as a stand-alone entity in December 2003.

New Fortress Energy is an integrated gas-to-power company. Its business model spans the entire production and delivery chain from natural gas procurement and liquefaction to logistics, shipping, terminals, and conversion or development of a natural gas-fired generation. It has invested in floating, liquefied natural gas vessels to both lower the cost of acquiring gas while securing a long-term supply for its terminals. Its segments include terminals and infrastructure, or T&I, and ships.

Edison International is an electricity generation, distribution, and wholesale utility in Southern California. About 20% of sales are from owned generation. EIX is a leader in renewable energy. It does not use coal in its fuel mix and plans to be net-zer0 by 2045. The utility's 2023 delivered power fuel mix is 10% natural gas, 9% nuclear, 20% solar, 5% hydro, 12% wind, and 26% mixed CAISO sources. It has two subsidiaries: Southern California Edison (SCE), an electric utility serving 15 million people in Southern California (excluding San Diego and Los Angeles), and Trio, formerly Edison Energy, an energy and sustainability advisory company that provides data to commercial and industrial users. SCE has about five million customer accounts in Central and Coastal Southern California. Its service area is about 50,000 square miles and the subsidiary typically accounts for about 99% of overall revenue. Edison has had litigation issues. It recently settled a range of claims, including $52 million for discrepancies in the distribution of energy-efficient lightbulbs, $1.16 billion in subrogation claims for a 2017 wildfire, and $2.2 billion in damages from the Wolsey Fire. The company is headquartered in Rosemead, California, and is a component of the S&P 500. EIX's market cap is about $33 billion.