Constellation Completes Acquisition of Integrys Energy Services

BALTIMORE--(BUSINESS WIRE)--Constellation, a subsidiary of Exelon Corporation (NYSE: EXC), and Integrys Energy Services, Inc., a subsidiary of Integrys Energy Group, Inc. (NYSE: TEG), today announced that Constellation has completed its acquisition of Integrys Energy Services, 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.