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The six regulated utilities consist of: • The Peoples Gas Light and Coke Company, a natural gas utility serving approximately 817,400 customers in the City of Chicago. • Wisconsin Public Service Corporation, an electric and natural gas utility serving approximately 437,000 electric customers and 317,000 natural gas customers in northeastern Wisconsin and an adjacent portion of Michigan's Upper Peninsula. • Minnesota Energy Resources Corporation, a natural gas utility serving approximately 211,100 customers throughout Minnesota. • Michigan Gas Utilities Corporation, a natural gas utility serving approximately 165,400 customers in lower Michigan. • North Shore Gas Company, a natural gas utility serving approximately 157,900 customers in the northern suburbs of Chicago. • Upper Peninsula Power Company, an electric utility serving approximately 51,900 customers in Michigan's Upper Peninsula. The company’s principal nonregulated subsidiary is: • Integrys Energy Services, Inc., a diversified nonregulated energy supply and services company serving residential, commercial, industrial, and wholesale customers in developed competitive markets in the United States. |
