Exelon Corporation is one of the nation's largest electric utilities. Exelon distribute electricity to customers in Illinois (ComEd) and Pennsylvania (PECO), and gas to customers in the Philadelphia area (PECO). In addition, for energy delivery Exelon's operations include energy generation and power marketing.
Exelon has one of the industry's largest portfolios of electricity generation capacity, with a nationwide reach and strong positions in the Midwest and Mid-Atlantic. Exelon operates the largest and most efficient nuclear fleet in the United States and the third largest commercial nuclear fleet in the world.
Headquartered in Chicago, Exelon trades on the NYSE under the ticker symbol EXC.