Business: Public Service Enterprise Group, Inc. is an integrated generation and energy company headquartered in Newark, New Jersey. Its main subsidiaries are: Public Service Electric and Gas Company (PSE&G), PSEG Power LLC, and PSEG Energy Holdings LLC. PSE&G is a regulated New Jersey utility delivering gas and electric safely and reliably to about 70% of New Jersey's population. PSEG Power is a major wholesale energy supplier in the Northeast with three main subsidiaries. PSEG Energy Holdings is a company with domestic investments and has two main energy-related businesses.