WEC Energy Group, Inc. was a diversified holding company with natural gas and electric utility operations, an approximately 60% equity ownership interest in American Transmission Company LLC, and non-utility electric operations through its We Power business, as of December 31, 2016. Its segments include Wisconsin; Illinois; Other States; Electric Transmission; We Power, and Corporate and Other. Wisconsin includes the electric and natural gas utility operations of Wisconsin Electric Power Company, Wisconsin Gas LLC, and Wisconsin Public Service Corporation, including WE's and WPS's electric and natural gas operations in the state of Michigan. Illinois includes the natural gas utility and non-utility operations of The Peoples Gas Light and Coke Company and North Shore Gas Company. Other states includes the natural gas utility and non-utility operations of Minnesota Energy Resources Corporation and Michigan Gas Utilities Corporation.