Centrais Elétricas Brasileiras S.A. - Eletrobrás, through its subsidiaries, engages in the generation, transmission, and commercialization of electricity in Brazil. The company generates electricity through hydroelectric, thermoelectric, nuclear, wind, and solar plants. As of December 31, 2023, it owned and operated 44 hydroelectric plants with a total capacity of 42,293.5 megawatt (MW); 5 thermal plants, including coal and gas power generation units with a total installed capacity of 1,632 MW; and two nuclear power plants comprising Angra 1 with an installed capacity of 657 MW and Angra 2 with an installed capacity of 1350 MW. It also owns and operates 66,539.17 kilometers of transmission lines. The company was incorporated in 1962 and is based in Rio De Janeiro, Brazil.

YPF Sociedad Anónima, an energy company, engages in the oil and gas upstream and downstream activities in Argentina. Its upstream operations include the exploration, exploitation, and production of crude oil, and natural gas. The company's downstream operations include petrochemical production and crude oil refining; transportation and distribution refined and petrochemical products; commercialization of crude oil, petrochemical products, and specialties. Its gas and power operations include transportation, commercialization, and distribution of natural gas; operation of regasification terminals; conditioning, processing, and separation of natural gas; and power generation. The company had interests in oil and gas fields. It also had a retail distribution network and retail service stations. In addition, the company owns and operates refineries, as well as maintains terminal facilities Argentine ports. Further, it participates in power generation plants; offers diesel, fertilizers, lubricants, phytosanitary products, and ensiling bags; and supplies diesel, gasoline, fuel oil, coal, asphalts, paraffin, and sulfur, CO2, decanted oil, and aromatic extract. The company was incorporated in 1977 and is based in Buenos Aires, Argentina.

Enel Chile S.A., an electricity utility company, engages in the generation, transmission, and distribution of electricity in Chile. It operates through Generation, and Distribution and Networks Segments. The company generates electricity through various sources, such as hydroelectric, solar, wind, thermal, and geothermal power plants; and distributes electricity in various municipalities of the Santiago metropolitan region. It serves residential, commercial, industrial, and other customers. The company was formerly known as Enersis Chile S.A. and changed its name to Enel Chile S.A. in October 2016. Enel Chile S.A. was incorporated in 2016 and is headquartered in Santiago, Chile. Enel Chile S.A. operates as a subsidiary of Enel S.p.A

Pampa Energía S.A. operates as an integrated power company in Argentina. The company operates through Electricity Generation, Oil and Gas, Petrochemicals, and Holding and Other Business segments. It generates electricity through thermal plants, hydroelectric plants, and wind farms with a 5,332 megawatt (MW) installed capacity. The company also explores for and produces oil and gas in the provinces of Neuquén and Río Negro. In addition, it produces petrochemicals, such as styrene, synthetic rubber, and polystyrene. Further, the company operates and maintains a 22,391 km high-voltage electricity transmission network in Argentina. Additionally, it holds a concession for the transportation of natural gas with 9,248 km of gas pipelines in the center, west, and south of Argentina; and processes and sells natural gas liquids in Bahía Blanca in the Province of Buenos Aires, as well as offers related advisory services. The company was formerly known as Pampa Holding S.A. and changed its name to Pampa Energía S.A. in September 2008. Pampa Energía S.A. was incorporated in 1945 and is based in Buenos Aires, Argentina.

Companhia Paranaense de Energia - COPEL engages in the generation, transformation, distribution, and sale of electricity to industrial, residential, commercial, rural, and other customers in Brazil. The company operates through Power Generation and Transmission, Power Distribution, GAS, Power Sale, and Holding and Services segments. It is also involved in the piped natural gas distribution. The company operates hydroelectric, wind, and thermoelectric plants; and owns and operates transmission and distribution lines. It holds concessions to distribute electricity in municipalities in the State of Paraná and in the municipality of Porto União in the State of Santa Catarina. Companhia Paranaense de Energia – COPEL was founded in 1954 and is headquartered in Curitiba, Brazil.

Companhia Paranaense de Energia - COPEL engages in the generation, transformation, distribution, and sale of electricity to industrial, residential, commercial, rural, and other customers in Brazil. The company operates through Power Generation and Transmission, Power Distribution, GAS, Power Sale, and Holding and Services segments. It is also involved in the piped natural gas distribution. The company operates hydroelectric, wind, and thermoelectric plants; and owns and operates transmission and distribution lines. It holds concessions to distribute electricity in municipalities in the State of Paraná and in the municipality of Porto União in the State of Santa Catarina. Companhia Paranaense de Energia – COPEL was founded in 1954 and is headquartered in Curitiba, Brazil.

Transportadora de Gas del Sur S.A. engages in transportation of natural gas, and production and commercialization of natural gas liquids in Argentina and internationally. The company operates through four segments: Natural Gas Transportation Services; Liquids Production and Commercialization; Midstream; and Telecommunications. The Natural Gas Transportation segment transports natural gas through pipeline system to distribution companies, power plants, and industrial customers. It provides operation and maintenance services for the natural gas transportation facilities. The Liquids Production and Commercialization segment produces and commercializes natural gas liquids, such as ethane, liquid petroleum gas, natural gasoline, propane, and butane. This segment offers certain related services comprising reception, storage, and dispatch of the liquids. The Midstream segment provides natural gas conditioning services; treatment, removal of impurities and natural gas compression, including the collection and transport of natural gas; and inspection and maintenance of pipelines and compressor plants services. In addition, this segment offers steam generation for electricity production and management services for expansion works and steam generation for the production of electricity. The Telecommunications segment offers data transmission services through a network of digital terrestrial radio relay. It serves residential, commercial, industrial, and electric power generation end users. The company was incorporated in 1992 and is headquartered in Buenos Aires, Argentina. Transportadora de Gas del Sur S.A. is a subsidiary of Compañía de Inversiones de Energía S.A.

Empresa Distribuidora y Comercializadora Norte Sociedad Anónima is involved in the distribution and sale of electricity in Argentina. The company was incorporated in 1992 and is based in Buenos Aires, Argentina. Empresa Distribuidora y Comercializadora Norte Sociedad Anónima operates as a subsidiary of Empresa de Energía del Cono Sur S.A..