Consumers Energy Co operates as an electric and gas utility in Michigan. The business activity of the group is functioned through three segments namely Electric Utility, Gas Utility, and Enterprises, its non-utility operations and investments. The Electric Utility segment refers to the generation, purchase, transmission, distribution, and sale of electricity. The Gas Utility segment is comprised of the purchase, transmission, storage, distribution, and sale of natural gas. The group primarily serves residential, commercial, and industrial customers. Geographically, it operates through the region of Michigan, US.