Duluth Loop Reliability Project
Project Details
Project Name
Duluth Loop Reliability Project
Applicant
Minnesota Power
Location
St. Louis County
Description
On October 21, 2021, Minnesota Power (Applicant) submitted a Certificate of Need (CN) Application and a high voltage transmission line (HVTL) Route Permit Application (RPA) to the Minnesota Public Utilities Commission (Commission). The RPA is submitted under the alternative review process (Minnesota Statute 216E.04; Minnesota Rule 7850.2800-3900).
Status
active
Project Contact
Project Summary
On April 3, 2023, the Commission issued an order authorizing Minnesota Power to construct and operate:
- approximately 14 miles of new 115 kilovolts (kV) transmission line between the Ridgeview, Haines Road, and Hilltop Substations;
- construction of a new approximately one-mile extension connecting an existing 230 kV transmission line to the Arrowhead Substation;
- upgrades to the Ridgeview, Hilltop, Haines Road, and Arrowhead substations; and
- reconfiguration, rebuild, and upgrade to existing transmission lines and communications infrastructure in the Project area – located in the cities of Duluth and Hermantown, St. Louis County, Minnesota.
Thermal upgrades to the existing 98 Line would be located within the city of Proctor and Midway Township, St. Louis County, Minnesota.
Interactive Map
Key Project Documents
Date
|
Title
|
Description
|
|---|---|---|
02/11/2026
|
Order Granting Certificate of Need and Issuing Route Permit
|
|
07/12/2022
|
Environmental Assessment - Duluth Loop Reliability Project
|
|
10/25/2021
|
Minnesota Power Duluth Loop Reliability Project - HVTL Route Permit Application
|
Docket Documents
View Project Documents (last 30) View All Project Documents
| Date | Document ID | On Behalf Of | Description |
|---|---|---|---|
| February 9, 2026 | 20262-227937-01 | Minnesota Power | Duluth Loop - January 2026 Monthly Status Report |
| January 9, 2026 | 20261-226719-01 | Minnesota Power | December 2025 Complaint Report |
| December 10, 2025 | 202512-225694-01 | Minnesota Power | Filing Report and Complaint Report for November 2025 |
| November 7, 2025 | 202511-224744-01 | Minnesota Power | Filing Report and Complaint Report for October 2025 |
| October 9, 2025 | 202510-223724-01 | Minnesota Power | Filing Report and Complaint Report for September 2025 |
| September 5, 2025 | 20259-222735-01 | Minnesota Power | August 2025 Complaint Report |
| August 11, 2025 | 20258-221960-01 | Minnesota Power | July 2025 Complaint Report and Status Report |
| July 17, 2025 | 20257-221089-01 | Minnesota Power | June 2025 Complaint Report and Status Report |
| June 9, 2025 | 20256-219726-01 | Minnesota Power | Route Permit Compliance Filing Report and Complaint Report for June 2025 |
| May 7, 2025 | 20255-218692-01 | Minnesota Power | Filing Report and Complaint Report for May 2025 Duluth Loop Reliability Project |
| April 11, 2025 | 20254-217558-01 | Minnesota Power | Duluth Loop - April 2025 Compliance Filing |
| March 12, 2025 | 20253-216322-01 | Minnesota Power | 2025 03 12 Duluth Loop - March Compliance Filing |
| February 10, 2025 | 20252-215153-01 | Minnesota Power | Duluth Loop - February 2025 Filing |
| January 10, 2025 | 20251-213810-01 | Minnesota Power | January 2025 Duluth Loop Status Report |
| January 9, 2025 | 20251-213718-01 | PUC | Letter to Minnesota Power |
| December 12, 2024 | 202412-212964-01 | Minnesota Power | 2024 12 12 Duluth Loop - December 2024 Compliance Filing |
| November 27, 2024 | 202411-212489-01 | DOC EERA | Transmission Line Plan and Profile |
| November 26, 2024 | 202411-212464-01 | Minnesota Power | Amended Maps to Nov 11 Filing |
| November 13, 2024 | 202411-211903-01 | MINNESOTA POWER | 2024 11 13 DULUTH LOOP_COMPLIANCE FILING NOVEMBER 2024 |
| November 11, 2024 | 202411-211792-01 | MINNESOTA POWER | FILING LETTER - TRANSMISSION LINE PLAN AND PROFILE FILING |
| November 11, 2024 | 202411-211792-02 | MINNESOTA POWER | ATTACHMENT A - PROOF OF VMP AND FIELD REP MAILNG 101524 |
| November 11, 2024 | 202411-211792-03 | MINNESOTA POWER | ATTACHMENT B - PART 1 OF 2 |
| November 11, 2024 | 202411-211792-04 | MINNESOTA POWER | ATTACHMENT B - PART 2 OF 2 |
| October 14, 2024 | 202410-210931-01 | MINNESOTA POWER | ROUTE PERMIT SECTIONS 6.2 AND 6.5 CONSTRUCTION PROGRESS |
| October 8, 2024 | 202410-210820-01 | MINNESOTA POWER | SEPTEMBER 2024 COMPLAINT REPORT |
| September 10, 2024 | 20249-210092-01 | MINNESOTA POWER | STATUS REPORT |
| August 9, 2024 | 20248-209383-01 | MINNESOTA POWER | AUGUST 2024 COMPLAINT REPORT |
| June 3, 2024 | 20246-207330-01 | PUC | TO MINNESOTA POWER |
| May 31, 2024 | 20245-207268-01 | DOC EERA | HILLTOP SUBSTATION |
| May 23, 2024 | 20245-207065-01 | MINNESOTA POWER | PLAN AND PROFILE FILING - HILLTOP SUBSTATION |