NextEra Energy, Inc., through its subsidiaries, generates, transmits, distributes, and sells electric power to retail and wholesale customers in North America. The company generates electricity through wind, solar, nuclear,natural gas, and other clean energy. It also develops, constructs, and operates long-term contracted assets that consists of clean energy solutions, such as renewable generation facilities, battery storage projects, and electric transmission facilities; sells energy commodities; and owns, develops, constructs, manages and operates electric generation facilities in wholesale energy markets. The company had approximately 33,276 megawatts of net generating capacity; approximately 90,000 circuit miles of transmission and distribution lines; and 883 substations. It serves approximately 12 million people through approximately 5.9 million customer accounts in the east and lower west coasts of Florida. The company was formerly known as FPL Group, Inc. and changed its name to NextEra Energy, Inc. in 2010. NextEra Energy, Inc. was founded in 1925 and is headquartered in Juno Beach, Florida.

Duke Energy Corporation, together with its subsidiaries, operates as an energy company in the United States. It operates through two segments: Electric Utilities and Infrastructure (EU&I), and Gas Utilities and Infrastructure (GU&I). The EU&I segment generates, transmits, distributes, and sells electricity in the Carolinas, Florida, and the Midwest. It generates electricity through coal, hydroelectric, natural gas, oil, solar and wind sources, renewables, and nuclear fuel. This segment also engages in the wholesale of electricity to municipalities, electric cooperative utilities, and load-serving entities. The GU&I segment distributes natural gas to residential, commercial, industrial, and power generation natural gas customers; and invests in pipeline transmission projects, renewable natural gas projects, and natural gas storage facilities. The company was formerly known as Duke Energy Holding Corp. and changed its name to Duke Energy Corporation in April 2006. Duke Energy Corporation was founded in 1904 and is headquartered in Charlotte, North Carolina.

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 5 million customers with a generation capacity of approximately 41,000 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.

WEC Energy Group, Inc., through its subsidiaries, provides regulated natural gas and electricity, and renewable and nonregulated renewable energy services in the United States. It operates through Wisconsin, Illinois, Other States, Electric Transmission, and Non-Utility Energy Infrastructure segments. The company generates and distributes electricity from coal, natural gas, oil, and nuclear, as well as renewable energy resources, including wind, solar, hydroelectric, and biomass; and distributes and transports natural gas. It also owns, maintains, monitors, and operates electric transmission systems; and generates, distributes, and sells steam. As of December 31, 2023, the company operated approximately 35,500 miles of overhead distribution lines and 36,500 miles of underground distribution cables, as well as 430 electric distribution substations and 523,700 line transformers; approximately 46,400 miles of natural gas distribution mains; 1,700 miles of natural gas transmission mains; 2.4 million natural gas lateral services; 490 natural gas distribution and transmission gate stations; and 69.3 billion cubic feet of working gas capacities in underground natural gas storage fields. The company was formerly known as Wisconsin Energy Corporation and changed its name to WEC Energy Group, Inc. in June 2015. WEC Energy Group, Inc. was founded in 1896 and is headquartered in Milwaukee, Wisconsin.

Avangrid, Inc., an energy services holding company, engages in the regulated energy transmission and distribution, and renewable energy generation businesses in the United States. The company operates through Networks and Renewables segments. It is involved in the generation, transmission, and distribution of electricity; and distribution, transportation, and sale of natural gas. In addition, the company operates renewable energy generation facilities primarily using onshore wind power, as well as solar, biomass, and thermal power. Further, it delivers natural gas and electricity to residential, commercial, and institutional customers through its regulated utilities in New York, Maine, Connecticut, and Massachusetts; and sells its output to investor-owned utilities, public utilities, and other credit-worthy entities, as well as generates and provides power and other services to federal and state agencies, institutional retail, and joint action agencies. Additionally, the company delivers thermal output to wholesale customers in the Western United States. It owns eight electric and natural gas utilities, serving 3.3 million customers in New York and New England, as well as owns and operates 9.3 gigawatts of electricity capacity primarily through wind power in 22 states. Avangrid, Inc. was incorporated in 1997 and is headquartered in Orange, Connecticut. The company operates as a subsidiary of Iberdrola, S.A.

Genie Energy Ltd., through its subsidiaries, engages in the supply of electricity and natural gas to residential and small business customers in the United States and internationally. It operates in two segments, GRE and Genie Renewables. The company also develops, constructs, and operates solar energy projects for commercial and industrial customers, as well as its own portfolio; provides energy brokerage and advisory services; markets community solar energy solutions; and manufactures and distributes solar panel, as well as engages in solar installation design and project management activities. Genie Energy Ltd. was incorporated in 2011 and is headquartered in Newark, New Jersey.

Clean Energy Technologies, Inc. designs, produces, and markets clean energy products and integrated solutions that focuses on energy efficiency and renewable energy in the United States. It operates through four segments: Clean Energy HRS and CETY Europe, CETY Renewables Waste to Energy Solutions, engineering and Manufacturing Business, and CETY HK. The company offers Clean Cycle, which generates electricity by recycling wasted heat produced in manufacturing, waste to energy, and power generation facilities. It also converts waste products created in manufacturing, agriculture, wastewater treatment plants, and other industries to electricity, renewable natural gas, hydrogen, and bio char. In addition, the company offers engineering, consulting, and project management solutions. Further, the company is involved in the sourcing and suppling of liquefied natural gas to industries and municipalities located in the southern part of Sichuan Province and portions of Yunnan Province. The company was formerly known as Probe Manufacturing, Inc. and changed its name to Clean Energy Technologies, Inc. in November 2015. Clean Energy Technologies, Inc. was founded in 1993 and is headquartered in Irvine, California. Clean Energy Technologies, Inc. is a subsidiary of MGW Investment I Ltd.

Via Renewables, Inc., through its subsidiaries, operates as an independent retail energy services company in the United States. It operates through two segments, Retail Electricity and Retail Natural Gas. The Retail Electricity segment engages in the transmission and sale of electricity to residential and commercial customers. The Retail Natural Gas segment is involved in the transportation, distribution, and sale of natural gas to residential and commercial customers. It also provides broker services for retail energy customers; and wireless services and equipment to wireless customers. The company offers its services under the Electricity Maine, Electricity N.H., Major Energy, Provider Power Massachusetts, Spark Energy, and Verde Energy brand names. It operates in 104 utility service territories across 20 states and the District of Columbia; and has approximately 335,000 residential customer equivalents. The company was formerly known as Spark Energy, Inc. and changed its name to Via Renewables, Inc. in August 2021. Via Renewables, Inc. was founded in 1999 and is headquartered in Houston, Texas. As of June 13, 2024 Via Renewables, Inc operates as a subsidiary of NuRetailco LLC.