Iron Range to Duluth

Minnesota Power and American Transmission Co. (ATC) are evaluating the joint development of a 120-mile double-circuit 345 kV line between the Mesabi Iron Range (Blackberry Substation) to the companies’ jointly owned Arrowhead Substation in Duluth, Minn. The  line is expected to be in service by the end of 2025.

Project Sponsor Line Miles Voltage (kV) From State To State Year in Service
Minnesota Power 120 345 MN MN 2025
Estimated Costs ($M) Voltage Type Project Status Project Group Origin Point Destination Point
220.5 Planned Blackberry Arrowhead
Interstate Build Start NERC ISO/RTO Country Project Partners
MRO MISO US Minnesota Power and American Transmission Company