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.

The Southern Company, through its subsidiaries, engages in the generation, transmission, and distribution of electricity. The company also develops, constructs, acquires, owns, and manages power generation assets, including renewable energy projects and sells electricity in the wholesale market; and distributes natural gas in Illinois, Georgia, Virginia, and Tennessee, as well as provides gas marketing services, gas distribution operations, and gas pipeline investments operations. In addition, it owns and operates nuclear, coal, hydro, cogeneration, solar, wind, battery storage, and fuel cell facilities. Further, the constructs, operates, and maintains approximately 77,900 miles of natural gas pipelines and 14 storage facilities with total capacity of 157 Bcf to provide natural gas to residential, commercial, and industrial customers. The company serves approximately 8.9 million electric and gas utility customers. Further, it develops distributed energy and resilience solutions; deploys microgrids for commercial, industrial, governmental, and utility customers; and offers digital wireless communications and fiber optics services. The Southern Company was incorporated in 1945 and is headquartered in Atlanta, Georgia.

Public Service Enterprise Group Incorporated, through its subsidiaries, operates in electric and gas utility business in the United States. It operates through PSE&G and PSEG Power segments. The PSE&G segment transmits electricity; distributes electricity and natural gas to residential, commercial, and industrial customers; and appliance services and repairs to customers through its service territory, as well as invests in solar generation projects, and energy efficiency and related programs. The PSEG Power segment engages in nuclear generation businesses; and supplies power and natural gas to nuclear power plants and gas storage facilities activities. As of December 31, 2023, it had electric transmission and distribution system of 25,000 circuit miles and 866,600 poles; 56 switching stations with an installed capacity of 39,953 megavolt-amperes (MVA), and 235 substations with an installed capacity of 10,382 MVA; 109 MVA aggregate installed capacity for substations; four electric distribution headquarters and five electric sub-headquarters; 18,000 miles of gas mains, 12 gas distribution headquarters, two sub-headquarters, and one meter shop, as well as 56 natural gas metering and regulating stations; and 158 MegaWatts defined conditions of installed PV solar capacity. Public Service Enterprise Group Incorporated was founded in 1903 and is based in Newark, New Jersey.

Consolidated Edison, Inc., through its subsidiaries, engages in the regulated electric, gas, and steam delivery businesses in the United States. It offers electric services to approximately 3.7 million customers in New York City and Westchester County; gas to approximately 1.1 million customers in Manhattan, the Bronx, parts of Queens, and Westchester County; and steam to approximately 1,530 customers in parts of Manhattan. The company also supplies electricity to approximately 0.3 million customers in southeastern New York and northern New Jersey; and gas to approximately 0.2 million customers in southeastern New York. In addition, it operates 545 circuit miles of transmission lines; 15 transmission substations; 63 distribution substations; 90,051 in-service line transformers; 3,788 pole miles of overhead distribution lines; and 2,314 miles of underground distribution lines, as well as 4,363 miles of mains and 380,870 service lines for natural gas distribution. Further, the company invests in electric and gas transmission projects. It primarily sells electricity to industrial, commercial, residential, and government customers. Consolidated Edison, Inc. was founded in 1823 and is based in New York, New York.

PG&E Corporation, through its subsidiary, Pacific Gas and Electric Company, engages in the sale and delivery of electricity and natural gas to customers in northern and central California, the United States. It generates electricity using nuclear, hydroelectric, fossil fuel-fired, fuel cell, and photovoltaic sources. The company owns and operates interconnected transmission lines; electric transmission substations, distribution lines, transmission switching substations, and distribution substations; and natural gas transmission, storage, and distribution system consisting of distribution pipelines, backbone and local transmission pipelines, and various storage facilities. It serves residential, commercial, industrial, and agricultural customers, as well as natural gas-fired electric generation facilities. PG&E Corporation was incorporated in 1905 and is based in Oakland, California.

FirstEnergy Corp., through its subsidiaries, generates, transmits, and distributes electricity in the United States. It operates through Regulated Distribution and Regulated Transmission segments. The company owns and operates coal-fired, nuclear, hydroelectric, wind, and solar power generating facilities. It operates 24,080 circuit miles of overhead and underground transmission lines; and electric distribution systems, including 274,518 miles of overhead pole line and underground conduit carrying primary, secondary, and street lighting circuits. The company serves approximately 6 million customers in Ohio, Pennsylvania, West Virginia, Maryland, New Jersey, and New York. FirstEnergy Corp. was incorporated in 1996 and is headquartered in Akron, Ohio.

Korea Electric Power Corporation, an integrated electric utility company, engages in the generation, transmission, and distribution of electricity in South Korea and internationally. The company operates through Transmission and Distribution, Nuclear Power Generation, Thermal Power Generation, and Others segments. It generates power from nuclear, coal, oil, liquefied natural gas, internal combustion, combined-cycle, integrated gasification combined cycle, hydro, wind, solar, fuel cell, biogas, and other sources. As of December 31, 2023, the company had a total of 794 generation units, including nuclear, thermal, hydroelectric, and internal combustion units with an installed generation capacity of 83,235 megawatts; transmission system consisted of 35,596 circuit kilometers of lines of 765 kilovolts and others, including high-voltage direct current lines, as well as 900 substations with an installed transformer capacity of 353,166 megavolt-amperes; and distribution system included 143,349 megavolt-amperes of transformer capacity and 10,178,243 units of support with a total line length of 542,567 circuit kilometers. The company provides electricity to residential, commercial, educational, industrial, agricultural, street lighting, and overnight power usage. It also provides engineering and construction services for utility plant and others; utility plant maintenance, electric power information technology, resources development, facility maintenance, electric meter reading, and security services; and engages in nuclear fuel, fly ashes recycling, utility plants construction and operation, and wood pellet utilization businesses. Korea Electric Power Corporation was founded in 1898 and is headquartered in Naju-si, South Korea.

IDACORP, Inc., together with its subsidiaries, engages in the generation, transmission, distribution, purchase, and sale of electric energy in the United States. The company operates 17 hydropower generating plants located in southern Idaho and eastern Oregon; three natural gas-fired plants in southern Idaho; and interests in two coal-fired steam electric generating plants located in Wyoming and Nevada. As of December 31, 2023, it had approximately 4,762 pole-miles of high-voltage transmission lines; 23 step-up transmission substations located at power plants; 21 transmission substations; 11 switching stations; 30 mixed-use transmission and distribution substations; 186 energized distribution substations; and 29,714 pole-miles of distribution lines, and 131 MW of battery storage, as well as provides electric utility services to approximately 633,000 retail customers in southern Idaho and eastern Oregon. The company serves commercial and industrial customers, which involved in food processing, electronics and general manufacturing, agriculture, health care, government, and education. It also invests in housing and other real estate tax credit investments. IDACORP, Inc. was founded in 1915 and is headquartered in Boise, Idaho.