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Atlantica Sustainable Infrastructure plc owns, manages, and invests in renewable energy, storage, natural gas and heat, electric transmission lines, and water assets in North America, South America, Europe, the Middle East, and Africa. The company was formerly known as Atlantica Yield plc and changed its name to Atlantica Sustainable Infrastructure plc in May 2020. Atlantica Sustainable Infrastructure plc was incorporated in 2013 and is based in Brentford, the United Kingdom.

Black Hills Corporation, through its subsidiaries, operates as an electric and natural gas utility company in the United States. The company operates in two segments: Electric Utilities and Gas Utilities. The Electric Utilities segment generates, transmits, and distributes electricity to approximately 222,000 electric utility customers in Colorado, Montana, South Dakota, and Wyoming; and owns and operates 1,394 megawatts of generation capacity and 9,106 miles of electric transmission and distribution lines. The Gas Utilities segment distributes natural gas to approximately 1,116,000 natural gas utility customers in Arkansas, Colorado, Iowa, Kansas, Nebraska, and Wyoming; owns and operates 4,663 miles of intrastate gas transmission pipelines; 42,514 miles of gas distribution mains and service lines; seven natural gas storage sites; and approximately 50,000 horsepower of compression and 516 miles of gathering lines. It also constructs and maintains customer owned gas infrastructure facilities for gas transportation customers; and provides appliance repair services to residential utility customers, as well as electrical system construction services to large industrial customers. In addition, the company produces electric power through wind, natural gas, and coal-fired generating plants; and coal at its coal mine located near Gillette, Wyoming. Black Hills Corporation was incorporated in 1941 and is headquartered in Rapid City, South Dakota.

Companhia Energética de Minas Gerais, through its subsidiaries, engages in the generation, transmission, distribution, and sale of electricity in Brazil. The company generates electricity through renewable energy sources, such as water, wind, sun, and biomass; or non-renewable sources, including fossil and nuclear fuels. As of December 31, 2016, it operated hydroelectric plants, thermoelectric plants, and solar plants with a total installed capacity of approximately 8,000 megawatts in 10 states of Brazil. It is also involved in the telecommunications and energy solutions consulting businesses; exploitation of natural gas; sale and trading of electricity; and acquisition, transport, and distribution of gas and its subproducts and derivatives, as well as provision of technology systems and systems for operational management of public service concessions, including companies operating in electricity, gas, water and sewerage, and other utility companies. The company was founded in 1952 and is headquartered in Belo Horizonte, Brazil.

PNM Resources, Inc., through its subsidiaries, provides electricity and electric services in the United States. It operates through Public Service Company of New Mexico (PNM) and Texas-New Mexico Power Company (TNMP) segments. The PNM segment engages in the generation, transmission, and distribution of electricity. The segment owns and leases communications, office and other equipment, office space, vehicles, and real estate. It generates electricity using coal, natural gas and oil, and nuclear fuel and waste, as well as solar, wind, geothermal, and battery storage energy sources. The TNMP segment provides regulated transmission and distribution services. The segment also owns and leases vehicles, service facilities, and office locations throughout its service territory. The company serves residential, commercial, and industrial customers and end-users of electricity in New Mexico and Texas. PNM Resources, Inc. was founded in 1882 and is based in Albuquerque, New Mexico.

Portland General Electric Company, an integrated electric utility company, engages in the generation, wholesale purchase, transmission, distribution, and retail sale of electricity in the state of Oregon. It operates six thermal plants, three wind farms, and seven hydroelectric facilities. As of December 31, 2023, the company owned an electric transmission system consisting of 1,254 circuit miles, including 287 circuit miles of 500 kilovolt line, 413 circuit miles of 230 kilovolt line, and 554 miles of 115 kilovolt line; and served 934 thousand retail customers in 51 cities. It also has 28,868 circuit miles of distribution lines. Portland General Electric Company was founded in 1889 and is headquartered in Portland, Oregon.