Exelon Corporation is one of the nation's largest electric utilities with approximately $19 billion in annual revenues. We distribute electricity to approximately 5.4 million customers in Illinois (ComEd) and Pennsylvania (PECO), and gas to 485,000 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. We are headquartered in Chicago and trade on the NYSE under the ticker symbol EXC.