Constellation ended 2013 serving two-thirds of the Fortune 100, more than 100,000 business customers and approximately 1 million residential customers, delivered 150 terawatt hours of power load and 1.4 TCF of gas supply across the commercial platform.

Constellation also strengthened its relationships with public customers including the U.S. Postal Service, Federal Bureau of Prisons, U.S. Naval Academy, Social Security Administration, U.S. General Services Administration and Fort Meade. The company retains its high profile in the public sector market, serving 350 agencies and institutions that also include the U.S. Capitol, Smithsonian, FBI and the Federal Reserve.