Public Service Enterprise Group Incorporated (PSEG) is a holding company. The Company also operates as an energy company that is consisting primarily of a regulated electric and gas utility and a nuclear generation business. The Company principally conducts its business through two direct wholly owned subsidiaries, Public Service Electric and Gas Company (PSE&G) and PSEG Power LLC (PSEG Power). Its segments include PSE&G and PSEG Power. Its PSE&G segment is principally engaged in the transmission of electricity and distribution of electricity and natural gas in certain areas of New Jersey. PSE&G segment also invests in regulated solar generation projects and energy-related programs in New Jersey. PSEG Power segment is an energy supply company that integrates the operations of its merchant nuclear and fossil generating assets with its fuel supply functions through energy sales in energy markets through its principal direct wholly owned subsidiaries.