Exelon Generation – The largest competitive power generator in the U.S. and in Illinois accessing about 35,000 megawatts of owned and contracted electricity supply. Exelon Generation operates nuclear, solar, and natural gas facilities in Illinois with over 12,000 skilled employees. Constellation is Exelon Generation’s competitive retail and wholesale energy business through which Constellation provides an array of innovative energy solutions that help customers buy, manage, and use electricity and natural gas. Constellation serves approximately 100,000 business and public sector customers.
Exelon Nuclear – responsible for operating the largest nuclear fleet in the United States and 17 nuclear units, located in Illinois, Pennsylvania and New Jersey, have a total net generating capacity of about 17,500. The Illinois units are located in Braidwood, Byron, Clinton, Dresden (near Morris), LaSalle (near Seneca), and Quad Cities (near Cordova).