Exelon’s Constellation Business Acquiring Integrys Energy Services to Grow Competitive Retail Energy Supply Business

CHICAGO--(BUSINESS WIRE)--Exelon Corporation (NYSE: EXC) and Integrys Energy Group, Inc. (NYSE: TEG) today announced they have entered into a definitive agreement for Exelon to purchase Integrys Energy Services Inc., a competitive retail electricity and natural gas subsidiary serving approximately 1.2 million commercial, industrial, public sector and residential customers across 22 Midwest, mid-Atlantic and Northeastern states and the District of Columbia. Integrys Energy Services will become part of Exelon’s Constellation business unit, strengthening Constellation’s retail power and gas business, serving approximately 2.5 million residential and business customers across the continental United States.