Esser Steel/Nashwauk Line

The Esser Steel/Nashwauk project involves the construction of three new 230-kV transmission lines, including one five-mile segment of double-circuit 230-kV line and the removal of another 230-kV line near the Duluth, MN, area. The project are being built to provide power for the Esser Steel taconite mine as well as the rest of the Nashwauk, MN, region. The project also involves a new 115-kV line that has yet to be completed and a second 115-kV line which will be re-routed around the Essar property to tie a Great River Energy circuit to the Minnesota Power 115-kV system. Work on the 230-kV lines was completed March 8 while remaining work on the 115-kV line will be completed by mid April, 2013. As part of the project, the new McCarthy Lake substation will serve the taconite plant and the new Calumet substation will serve the mine area. Substation construction began in August 2011 and was completed in early March.

Project Sponsor Line Miles Voltage (kV) From State To State Year in Service
Minnesota Power 28 230 MN MN 2013
Estimated Costs ($M) Voltage Type Project Status Project Group Origin Point Destination Point
56 Operating McCarthy Lake Calumet
Interstate Build Start NERC ISO/RTO Country Project Partners
2011 MRO MISO US