SEMCO Energy Gas Company is a regulated public utility with headquarters in Port Huron, Michigan.
SEMCO delivers natural gas to about 300,000 customers, including residential, commercial, and industrial accounts. SEMCO’s service territories are all over the state of Michigan. In the southern half of the Lower Peninsula, the energy company covers areas around Battle Creek, Albion, Niles, Holland, Port Huron, and Three Rivers. The company’s also in the eastern, central, and western parts of the state’s Upper Peninsula.