Public Service Enterprise Group Incorporated (PSEG) is a holding company. The Company is an energy company with operations located primarily in the Northeastern and Mid-Atlantic United States. The Company's segments include Public Service Electric and Gas Company (PSE&G) and PSEG Power LLC (PSEG Power). PSEG is engaged in the transmission of electricity and distribution of electricity and natural gas in certain areas of New Jersey. PSE&G is also the provider of last resort for gas and electric commodity service for end users in its service territory. Power is a multi-regional energy supply company that integrates the operations of its merchant nuclear and fossil generating assets with its power marketing businesses and fuel supply functions primarily in the Northeast and Mid-Atlantic United States through its principal subsidiaries. In addition, Power owns and operates solar generation in various states.