American Transmission Company provides the pathway for power into communities in portions of Wisconsin, Michigan, Minnesota and Illinois. The company owns, builds, maintains and operates the high-voltage electric transmission systems the keeps the lights on, business running and communities strong. Founded in 2001 as one of the first multistate transmission-only utility companies, American Transmission Company is backed by equity owners that transferred transmission assets or cash to the company. It is a transmission-owning member of the Midwest Independent Transmission System Operator and Mid-American Interconnected Network. The company is headquartered in Peaukee, Wis., and employs nearly 400 people. American Transmission company holds nearly $1.3 billion in assets. It also maintains operations in De Pere, Wis.