Exelon Corporation is an American energy company headquartered in Chicago, Illinois. It was founded in February 2000 by the merger of PECO Energy Company and Unicom Corp. At the time of the merger, it was the largest electric utility in the United States based on the number of customers served. The company operates in 48 states in the US and Canada, with a portfolio that includes nuclear, gas, and renewable energy facilities.
Exelon Corporation's business segments include Exelon Generation, Exelon Power, and Exelon Utilities. Exelon Generation is responsible for the company's energy production, operating over 20,000 megawatts of capacity across a diverse mix of sources, including nuclear, gas, hydro, solar, and wind power. Exelon Power markets energy, capacity, and ancillary services to utilities, independent power producers, municipalities, and industrial customers. Exelon Utilities operates six regulated utilities in Illinois, Maryland, and Pennsylvania, serving more than 10 million customers.
Exelon Corporation went public on December 1, 2000, following the merger of PECO Energy Company and Unicom Corp. Its shares are traded on the New York Stock Exchange (NYSE) under the ticker symbol EXC. The initial public offering (IPO) of Exelon Corporation raised approximately $12.2 billion in gross proceeds, making it one of the largest IPOs in US history at the time.
Exelon Corporation is one of the largest producers of clean energy in the United States. The company's nuclear facilities generate approximately 55% of its electricity and have among the lowest greenhouse gas emissions of any electricity source.