PSE&G, or Public Service Electricity & Gas, is the largest utility in New Jersey. It serves about 55% of the electricity customers in the state.
The Public Service Corporation was formed in 1903 by amalgamating more than 400 gas, electric and transportation companies in New Jersey. It was renamed Public Service Electric and Gas Company in 1948. The transportation operations of PSE&G were purchased by New Jersey Transit in 1980, leaving PSE&G exclusively in the utility business. In 1985, Public Service Enterprise Group (PSEG) formed as a holding company, and in 1989 established Enterprise Diversified Holdings Inc. (now PSEG Energy Holdings), to begin consolidation of its unregulated businesses. In 2000, PSE&G split its unregulated national power generation assets to form PSEG Power, while PSE&G continued operating in New Jersey as a regulated gas and electric delivery company.
In June 2005, the acquisition of PSEG by Exelon, a Chicago and Philadelphia based utility conglomerate, was approved by the Federal Energy Regulatory Commission; however, the deal was never consummated and eventually dissolved after it became clear that it would not win state regulatory approval from the New Jersey Board of Public Utilities.
In 2009, PSEG began installing solar panels on 200,000 utility poles in its service area in a project costing $773 million, the largest such project in the world. The Solar 4 All project increased the capacity for renewable energy in New Jersey and was completed in 2013. In addition, PSEG is building four solar farms in Edison, Hamilton, Linden, and Trenton.