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Based in Chicago , Exelon has operations and projects in 47 states , the District of Columbia , and Canada and operates regulated utilities in Illinois , Pennsylvania , and Maryland . The company has approximately 35,000 megawatts of owned capacity and 7.8 million customers . Exelon also has full or majority ownership of 17 nuclear reactors in 10 nuclear power plants . The company was created in October 2000 by the merger of PECO Energy Company and Unicom . Christopher Crane currently serves as president and CEO . Exelon ’ s Constellation business unit provides energy products and services to approximately 100,000 business and public sector customers and approximately 1 million residential customers .

www . exeloncorp . com

36 July 2014

Exelon ’ s current head office