Service area
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.
Helping to keep the lights on, businesses running and communities strong®
P.O. Box 47, Waukesha, WI 53187-0047 | (866) 899-3204
© 2023 American Transmission Co. All Rights Reserved.
