SEMCO Energy

Who We Are


SEMCO Energy is a subsidiary of AltaGas Services (U.S.), which owns and operates businesses involved in natural gas distribution, propane distribution, intrastate pipelines, natural gas storage, and power generation.

SEMCO Energy, headquartered in Port Huron, Michigan, is a regulated public utility that delivers natural gas to over 300,000 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.

The Company has other businesses, including a propane distribution business in Michigan's Upper Peninsula and natural gas pipeline and storage operations in Michigan.

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. In addition, we are actively looking to expand our business in other parts of the country. Our focus is on local natural gas distribution companies, gas pipeline facilities, and natural gas storage assets.

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