Headquartered in Pewaukee, Wis., ATC owns and operates the electric transmission system in portions of Wisconsin, Michigan, Minnesota and Illinois. The red dots on the map indicate ATC offices.
Sign up for email updates
P.O. Box 47, Waukesha, WI 53187-0047 | (866) 899-3204
© 2022 American Transmission Co. All Rights Reserved.
Data Privacy Commitment Statement