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CPFL Energia S.A., through its subsidiaries, generates, transmits, distributes, and commercializes electricity to residential, industrial, and commercial customers in Brazil. The company generates electricity through wind, biomass, solar, and hydroelectric power plants. It also manufactures, commercializes, rents, and maintains electro-mechanical equipment; and offers administrative, call center, collection, IT, telecommunication, energy transmission, and energy efficiency management services, as well as maintenance services for energy generation companies. As of December 31, 2018, the company distributed electricity to approximately 9.6 million customers; and had 323,979 kilometers of distribution lines, which included 464,627 distribution transformers. It also has an installed capacity of 3,272 megawatts. The company was founded in 1998 and is headquartered in Campinas, Brazil. CPFL Energia S.A. is a subsidiary of State Grid Brazil Power Participações S.A.

Engie Brasil Energia S.A., together with its subsidiaries, generates, sells, and trades in electrical energy in Brazil. The company operates 76 plants, including 11 hydroelectric power plants; 1 thermal power plants; 50 wind farms; 3 biomass; 9 photovoltaic and solar power plant; and 2 small hydroelectric plants. As of December 31, 2022, it had an installed capacity of 8,453.3 megawatts. The company also transports natural gas through 4,500 km of gas pipelines. In addition, it manufactures, wholesales, retails, operates, and maintains solar panels. The company was formerly known as Tractebel Energia S.A. and changed its name to Engie Brasil Energia S.A. in July 2016. The company was founded in 2005 and is headquartered in Florianópolis, Brazil. Engie Brasil Energia S.A. operates as a subsidiary of ENGIE Brasil Participações Ltda.

NRG Energy, Inc., together with its subsidiaries, operates as an energy and home services company in the United States and Canada. It operates through Texas; East; West/Services/Other; Vivint Smart Home; and Corporate Activities segments. The company produces and sells electricity generated using coal, oil, solar, and battery storage; natural gas; and a cloud-based home platform, including hardware, software, sales, installation, customer service, technical support, and professional monitoring solutions. It offers retail electricity and energy management, line and surge protection products, HVAC installation, repair and maintenance, home protection products, carbon offsets, back-up power stations, portable power, portable solar, and portable lighting; retail services comprising demand response, commodity sales, energy efficiency, and energy management solutions; and system power, distributed generation, renewable and low-carbon products, carbon management and specialty services, backup generation, storage and distributed solar, and energy advisory services. In addition, the company trades in power, natural gas, and related commodities; environmental products; weather products; and financial products, including forwards, futures, options, and swaps. It offers its products and services under the NRG, Reliant, Direct Energy, Green Mountain Energy, and Vivint. It serves residential, commercial, government, industrial, and wholesale customers. NRG Energy, Inc. was founded in 1989 and is headquartered in Houston, Texas.

Pinnacle West Capital Corporation, through its subsidiary, provides retail and wholesale electric services primarily in the state of Arizona. The company engages in the generation, transmission, and distribution of electricity using coal, nuclear, gas, oil, and solar generating facilities. Its transmission facilities include overhead lines and underground lines; and distribution facilities consist of overhead lines and underground primary cables. The company also owns and maintains transmission and distribution substations; and owns energy storage facilities. Pinnacle West Capital Corporation was incorporated in 1985 and is headquartered in Phoenix, Arizona.

Vistra Corp., together with its subsidiaries, operates as an integrated retail electricity and power generation company. The company operates through six segments: Retail, Texas, East, West, Sunset, and Asset Closure. It retails electricity and natural gas to residential, commercial, and industrial customers across states in the United States and the District of Columbia. In addition, the company is involved in the electricity generation, wholesale energy purchases and sales, commodity risk management, fuel production, and fuel logistics management activities. It serves approximately 4 million customers with a generation capacity of approximately 37,000 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.