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.

UGI Corporation, together with its subsidiaries, distributes, stores, transports, and markets energy products and related services in the United States and internationally. The company operates through four segments: AmeriGas Propane, UGI International, Midstream & Marketing, and UGI Utilities. It distributes propane to approximately 1.3 million residential, commercial/industrial, motor fuel, agricultural, and wholesale customers through 1,400 propane distribution locations. The company distributes liquefied petroleum gases (LPG) to residential, commercial, industrial, agricultural, wholesale and automobile fuel customers; and provides logistics, storage, and other services to third-party LPG distributors. In addition, it engages in the retail sale of natural gas, liquid fuels, and electricity to approximately 12,400 residential, commercial, and industrial customers at 42,000 locations. Further, the company distributes natural gas to approximately 677,000 customers in eastern and central Pennsylvania counties through its distribution system of approximately 12,500 miles of gas mains; and supplies electricity to approximately 62,600 customers in northeastern Pennsylvania through 2,560 miles of lines and 14 substations. Additionally, it operates electric generation facilities, which include coal-fired, landfill gas-fueled, solar-powered, and natural gas-fueled facilities; a natural gas liquefaction, storage, and vaporization facility; propane storage and propane-air mixing stations; and rail transshipment terminals. It manages natural gas pipeline and storage contracts; develops, owns, and operates pipelines, gathering infrastructure, and gas storage facilities. UGI Corporation was incorporated in 1882 and is headquartered in King of Prussia, Pennsylvania.

New Jersey Resources Corporation, an energy services holding company, distributes natural gas. The company operates through four segments: Natural Gas Distribution, Clean Energy Ventures, Energy Services, and Storage and Transportation. The Natural Gas Distribution segment offers regulated natural gas utility services to approximately 576,000 customers in Burlington, Middlesex, Monmouth, Morris, Ocean, and Sussex counties in New Jersey; provides capacity and storage management services; and participates in the off-system sales and capacity release markets. The Clean Energy Ventures segment invests in, owns, and operates clean energy projects, including commercial and residential solar installation situated in New Jersey, Rhode Island, New York, Connecticut, Michigan, and Indiana. The Energy Services segment maintains and operates natural gas transportation and storage capacity contracts, as well as provides physical wholesale energy, retail energy and energy management services in the United States and Canada. The Storage and Transportation segment invests in invests in energy-related ventures. It provides heating, ventilation, and cooling services; sales and installation of appliances; offers solar equipment installation, and plumbing repair and installation services; and holds commercial real estate properties. The company was incorporated in 1981 and is headquartered in Wall, New Jersey.

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.

NorthWestern Energy Group, Inc. provides electricity and natural gas to residential, commercial, and various industrial customers. It generates, purchases, transmits, and distributes electricity; and produces, purchases, stores, transmits, and distributes natural gas, as well as owns municipal franchises to provide natural gas service in the communities. The company operates 6,600 miles of electric transmission and 18,674 miles of electric distribution lines with approximately 395 transmission and distribution substations; and 2,235 miles of natural gas transmission and 5,155 miles of natural gas distribution lines with approximately 133 city gate stations in Montana. It also operates 1,310 miles of electric transmission and 2,365 miles of electric distribution lines in South Dakota with approximately 124 transmission and distribution substations; and 55 miles of natural gas transmission and 2,573 miles of natural gas distribution lines in South Dakota and Nebraska. The company provides electricity and/or natural gas to approximately 775,300 customers in Montana, South Dakota, Nebraska, and Yellowstone National Park. NorthWestern Energy Group, Inc. was founded in 1923 and is based in Sioux Falls, South Dakota.

MGE Energy, Inc., through its subsidiaries, operates as a public utility holding company primarily in the United States. It operates through Regulated Electric Utility Operations; Regulated Gas Utility Operations; Nonregulated Energy Operations; Transmission Investments; and All Other segments. The company generates, purchases, and distributes electricity and natural gas in Wisconsin and Iowa; owns and leases electric generating capacity; and plans, constructs, operates, maintains, and expands transmission facilities to provide transmission power services. It generates electricity from coal-fired, gas-fired, and renewable energy sources. As of December 31, 2023, the company owned and operated 835 miles of overhead electric distribution lines; 1,330 miles of underground electric distribution cables; 49 substations with an installed capacity of 1.2 million kVA; and gas facilities, including 3,066 miles of distribution mains, as well as supplied electric service to approximately 163,000 customers. MGE Energy, Inc. founded in 2001 and is headquartered in Madison, Wisconsin.

Everus Construction Group, Inc. provides utility construction services. It offers electrical line construction, pipeline construction, inside electrical wiring and cabling, and mechanical services. The company also involves in the manufacture and distribution of specialty equipment, and electrical control panel; and installation and maintenance of automatic fire sprinkler systems in Las Vegas and Reno. The company was incorporated in 1995 and is based in Bismarck, North Dakota.

MYR Group Inc., through its subsidiaries, provides electrical construction services in the United States and Canada. It operates in two segments, Transmission and Distribution, and Commercial and Industrial. The Transmission and Distribution segment offers a range of services on electric transmission and distribution networks, and substation facilities, including design, engineering, procurement, construction, upgrade, maintenance, and repair services with primary focus on construction, maintenance, and repair to customers in the electric utility industry; and services, including construction and maintenance of high voltage transmission lines, substations, and lower voltage underground and overhead distribution systems, clean energy projects, and electric vehicle charging infrastructure services, as well as emergency restoration services in response to hurricane, wildfire, ice, or other related damages. This segment serves as a prime contractor to customers, such as investor-owned utilities, cooperatives, private developers, government-funded utilities, independent power producers, independent transmission companies, industrial facility owners, and other contractors. The Commercial and Industrial segment provides a range of services, including design, installation, maintenance, and repair of commercial and industrial wiring; and installation of intelligent transportation systems, roadway lighting, and signalization for airports, hospitals, data centers, hotels, stadiums, commercial and industrial facilities, clean energy projects, manufacturing plants, processing facilities, water/waste-water treatment facilities, mining facilities, intelligent transportation systems, roadway lighting, signalization, and electric vehicle charging infrastructure. This segment serves general contractors, commercial and industrial facility owners, governmental agencies, and developers. The company was founded in 1891 and is headquartered in Thornton, Colorado.