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The AES Corporation, together with its subsidiaries, operates as a diversified power generation and utility company in the United States and internationally. The company owns and/or operates power plants to generate and sell power to customers, such as utilities, industrial users, and other intermediaries; owns and/or operates utilities to generate or purchase, distribute, transmit, and sell electricity to end-user customers in the residential, commercial, industrial, and governmental sectors; and generates and sells electricity on the wholesale market. It uses various fuels and technologies to generate electricity, such as coal, gas, hydro, wind, solar, and biomass, as well as renewables comprising energy storage and landfill gas. The company owns and/or operates a generation portfolio of approximately 34,596 megawatts and distributes power to 2.6 million customers. The company was formerly known as Applied Energy Services, Inc. and changed its name to The AES Corporation in April 2000. The AES Corporation was incorporated in 1981 and is headquartered in Arlington, Virginia.

American Water Works Company, Inc., through its subsidiaries, provides water and wastewater services in the United States. It offers water and wastewater services to approximately 1,700 communities in 14 states serving approximately 3.5 million active customers. The company serves residential customers; commercial customers, including food and beverage providers, commercial property developers and proprietors, and energy suppliers; fire service and private fire customers; industrial customers, such as large-scale manufacturers, mining, and production operations; public authorities comprising government buildings and other public sector facilities, such as schools and universities; and other utilities and community water and wastewater systems. It also provides water and wastewater services on military installations; and undertakes contracts with municipal customers, primarily to operate and manage water and wastewater facilities, as well as offers other related services. In addition, the company operates approximately 80 surface water treatment plants; 540 groundwater treatment plants; 175 wastewater treatment plants; 53,700 miles of transmission, distribution, and collection mains and pipes; 1,200 groundwater wells; 1,700 water and wastewater pumping stations; 1,100 treated water storage facilities; and 74 dams. The company was founded in 1886 and is headquartered in Camden, New Jersey.

Companhia de Saneamento Básico do Estado de São Paulo SABESP provides basic and environmental sanitation services in the São Paulo State, Brazil. The company supplies treated water and sewage services to residential, commercial, and industrial private customers, as well as public. As of December 31, 2022, it provided water services through 10.1 million water connections; and sewage services through 8.6 million sewage connections in 375 municipalities of the São Paulo State. The company was founded in 1954 and is headquartered in São Paulo, Brazil.

Essential Utilities, Inc., through its subsidiaries, operates regulated utilities that provide water, wastewater, or natural gas services in the United States. The company operates through Regulated Water and Regulated Natural Gas segments. It offers water services through operating and maintenance contract with municipal authorities and other parties. In addition, the company provides utility service line protection solutions and repair services to households. It serves approximately 5.5 million residential water, commercial water, fire protection, industrial water, wastewater, and other water and utility customers in Pennsylvania, Ohio, Texas, Illinois, North Carolina, New Jersey, Indiana, Virginia, and Kentucky under the Aqua and Peoples brands. The company was formerly known as Aqua America, Inc. and changed its name to Essential Utilities, Inc. in February 2020. Essential Utilities, Inc. was founded in 1886 and is headquartered in Bryn Mawr, Pennsylvania.