A registration statement describing the Exchange Offer was declared effective by the Securities and Exchange Commission on Dec. 7, 2012. This press release shall not constitute an offer to sell or the solicitation of an offer to buy any of the new notes or any other security, and shall not constitute an offer, solicitation or sale in any jurisdiction in which, or to any persons to whom, such offering, solicitation or sale would be unlawful.Exelon Corporation (NYSE:EXC) is the nation’s leading competitive energy provider, with approximately $33 billion in annual revenues. Headquartered in Chicago, Exelon has operations and business activities in 47 states, the District of Columbia and Canada. Exelon is the largest competitive U.S. power generator, with approximately 35,000 megawatts of owned capacity comprising one of the nation’s cleanest and lowest-cost power generation fleets. The company’s Constellation business unit provides energy products and services to approximately 100,000 business and public sector customers and approximately 1 million residential customers. Exelon’s utilities deliver electricity and natural gas to more than 6.6 million customers in central Maryland (BGE), northern Illinois (ComEd) and southeastern Pennsylvania (PECO).