SEMCO ENERGY Gas Company, headquartered in Port Huron, Michigan, is a regulated public utility that delivers natural gas to a ... pproximately 310,000 residential, commercial, and industrial customers in service territories in the southern half of the state's Lower Peninsula (including in and around the cities of Albion, Battle Creek, Holland, Niles, Port Huron, and Three Rivers) and in the central, eastern, and western parts of the state's Upper Peninsula. SEMCO ENERGY is regulated by the Michigan Public Service Commission. Among other things, this agency sets the prices charged by the Company and the other terms and conditions of service to our customers. The Company's overall strategy is to provide excellent customer service and to grow our existing businesses. SEMCO Energy Gas Company is an indirect wholly-owned subsidiary of AltaGas Ltd. www.altagas.ca read more