Xcel Energy Inc., through its subsidiaries, engages in the generation, purchasing, transmission, distribution, and sale of electricity. It operates through Regulated Electric Utility, Regulated Natural Gas Utility, and All Other segments. The company generates electricity through wind, nuclear, hydroelectric, biomass, and solar energy sources, as well as coal, natural gas, oil, wood, and refuse-derived fuels. It also purchases, transports, distributes, and sells natural gas to retail customers, as well as transports customer-owned natural gas. In addition, the company develops and leases natural gas pipelines, and storage and compression facilities; and invests in rental housing projects and nonregulated assets, as well as procures equipment for the construction of renewable generation facilities. It serves residential, commercial, and industrial customers in the portions of Colorado, Michigan, Minnesota, New Mexico, North Dakota, South Dakota, Texas, and Wisconsin. The company was incorporated in 1909 and is headquartered in Minneapolis, Minnesota.

PPL Corporation, an energy company, focuses on providing electricity and natural gas to approximately 3.6 million customers in the United States. It operates through three segments: Kentucky Regulated, Pennsylvania Regulated, and Rhode Island Regulated. The company delivers electricity to customers in Pennsylvania, Kentucky, Virginia, and Rhode Island; delivers natural gas to customers in Kentucky and Rhode Island; and generates electricity from power plants in Kentucky. PPL Corporation was founded in 1920 and is headquartered in Allentown, Pennsylvania.

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.

Clearway Energy, Inc. operates in the renewable energy business in the United States. The company operates through Conventional and Renewables segments. It has approximately 6,000 net MW of installed wind, solar, and energy generation projects; and approximately 2,500 net MW of natural gas-fired generation facilities. The company was formerly known as NRG Yield, Inc. and changed its name to Clearway Energy, Inc. in August 2018. Clearway Energy, Inc. was incorporated in 2012 and is based in Princeton, New Jersey. Clearway Energy, Inc. operates as a subsidiary of Clearway Energy Group LLC.

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 Fuels Corp. provides natural gas as alternative fuels for vehicle fleets and related fueling solutions in the United States and Canada. It supplies renewable natural gas (RNG), compressed natural gas (CNG), and liquefied natural gas (LNG) for medium and heavy-duty vehicles; and offers operation and maintenance services for public and private vehicle fleet customer stations. The company also designs, builds, operates, and maintains vehicle fueling stations; and sells and services compressors and other equipment that are used in RNG production and fueling stations. In addition, it transports and sells CNG, RNG, and LNG through virtual natural gas pipelines and interconnects; sells U.S. federal, state, and local government credits, such as RNG as a vehicle fuel, including Renewable Identification Numbers and Low Carbon Fuel Standards credits; and obtains federal, state, and local credits, grants, and incentives. Further, the company focuses on developing, owning, and operating dairy and other livestock waste RNG projects. It serves heavy-duty trucking, airports, refuse, public transit, industrial, and institutional energy users, as well as government fleets. Clean Energy Fuels Corp. was incorporated in 2001 and is headquartered in Newport Beach, California.

Montana Technologies Corporation operates as an atmospheric renewable energy and water harvesting technology company. It provides energy and dehumidification, evaporative cooling, and atmospheric water generation through its AirJoule technology. The company is headquartered in Ronan, Montana.

RGC Resources, Inc., through its subsidiaries, operates as an energy services company. It sells and distributes natural gas to residential, commercial, and industrial customers in Roanoke, Virginia, and the surrounding localities. It operates approximately 1,180 miles of transmission and distribution pipeline; and a liquefied natural gas storage facility, as well as owns and operates eleven metering stations. The company also produces biogas. RGC Resources, Inc. was founded in 1883 and is based in Roanoke, Virginia.