Exelon Corporation

Exelon Corporation is one of the nation's largest electric utilities with approximately 5.2 million customers and more than $14 billion in annual revenues. The company 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 distributes electricity to approximately 5.2 million customers in northern Illinois and Pennsylvania and gas to more than 460,000 customers in the Philadelphia area. Exelon is headquartered in Chicago and trades on the NYSE under the ticker EXC. This communication shall not constitute an offer to sell or the solicitation of an offer to buy the Senior Notes. A copy of the prospectus relating to the offering may be obtained from Citigroup Global Markets, ( www.exeloncorp.com )