Public Service Enterprise Group Incorporated, through its subsidiaries, operates as an energy company primarily in the Northeastern and Mid-Atlantic United States. It operates through two segments, PSE&G and PSEG Power. The PSE&G segment transmits electricity; distributes electricity and gas to residential, commercial, and industrial customers, as well as invests in solar generation projects, and energy efficiency and related programs; and offers appliance services and repairs. As of December 31, 2021, it had electric transmission and distribution system of 25,000 circuit miles and 862,000 poles; 56 switching stations with an installed capacity of 39,353 megavolt-amperes (MVA), and 235 substations with an installed capacity of 9,285 MVA; four electric distribution headquarters and five electric sub-headquarters; and 18,000 miles of gas mains, 12 gas distribution headquarters, two sub-headquarters, and one meter shop, as well as 58 natural gas metering and regulating stations. Public Service Enterprise Group Incorporated was incorporated in 1985 and is based in Newark, New Jersey.