Exelon Corporation is an electricity generating and distributing company headquartered in Chicago. It was created in October, 2000 by the merger of PECO Energy Company and Unicom, of Philadelphia and Chicago respectively. Unicom owned Commonwealth Edison. Exelon has 5.2 million electricity customers and, in the Philadelphia suburbs, 460,000 natural gas customers.
On June 30, 2005 the Federal Energy Regulatory Commission approved the merger of Exelon and Public Service Enterprise Group Inc., a New Jersey utility. Under this merger, Exelon would have become the largest utility in the United States. The two companies later broke off the agreement due to pressure put on the NJ Board of Public Utilities by public interest groups, including New Jersey Citizen Action.The merger sat pending in front of the NJBPU for nineteen months before Exelon concluded that they were fighting a losing battle.
Exelon's Political Action Committee is EXELONPAC.
Exelon is a leading nuclear power plant operator in the United States.
Exelon does not own the wind farms, but has an agreement for their entire output.