Maple River – Cuyuna 345 kV Transmission Line Project
Project Details
Project Name
Maple River – Cuyuna 345 kV Transmission Line Project
Applicant
Minnesota Power, Great River Energy, Otter Tail Power
Location
Crow Wing County
Description
The Project involves construction of a new 345 kV double-circuit transmission line, initially operated as a single circuit, extending from Minnesota Power’s Cuyuna Substation in Crow Wing County, Minnesota, to Otter Tail Power Company’s Maple River Substation in Cass County, North Dakota
Status
active
Project Contact
Project Summary
The Applicants seek a Certificate of Need from the Minnesota Public Utilities Commission for the Maple River–Cuyuna 345 kV Transmission Project, a new 160–180 mile double-circuit transmission line connecting substations in Minnesota and North Dakota. The line will be jointly owned by Minnesota Power, Otter Tail Power Company, and Great River Energy.
Key Project Documents
Date
|
Title
|
Description
|
|---|---|---|
02/05/2026
|
Certificate of Need Application
|
Docket Documents
View Project Documents (last 30) View All Project Documents
| Date | Document ID | On Behalf Of | Description |
|---|---|---|---|
| February 17, 2026 | 20262-228217-01 | Minnesota Power, Great River Energy, and Otter Tail Power Company | Maple River - Cuyuna Eighth Status Update |
| February 9, 2026 | 20262-227936-01 | PUC | NOTICE OF COMMENT PERIOD ON APPLICATION COMPLETENESS |
| February 6, 2026 | 20262-227901-01 | Minnesota Power, Great River Energy, Otter Tail Power Company | Affidavit of Mailing to Public Libraries - MR-C Application |
| January 30, 2026 | 20261-227646-02 | Minnesota Power, Great River Energy, Otter Tail Power Company | Certificate of Service - MR-C Application |
| January 30, 2026 | 20261-227645-06 | Minnesota Power, Great River Energy, Otter Tail Power Company | Certificate of Service - Application |
| January 30, 2026 | 20261-227645-05 | Minnesota Power, Great River Energy, Otter Tail Power Company | Appendices L through M |
| January 30, 2026 | 20261-227645-03 | Minnesota Power, Great River Energy, Otter Tail Power Company | Appendices F through K (PUBLIC) |
| January 30, 2026 | 20261-227646-01 | Minnesota Power, Great River Energy, Otter Tail Power Company | Summary of Filing - MR-C Application |
| January 30, 2026 | 20261-227645-02 | Minnesota Power, Great River Energy, Otter Tail Power Company | Application and Appendices A through E |
| January 30, 2026 | 20261-227645-01 | Minnesota Power, Great River Energy, Otter Tail Power Company | Filing Letter and Statement Regarding Trade Secret |
| January 23, 2026 | 20261-227314-01 | Minnesota Power, Great River Energy, and Otter Tail Power Company | Notice Plan Filing |
| January 23, 2026 | 20261-227314-02 | Minnesota Power, Great River Energy, and Otter Tail Power Company | Certificate of Service & Service List - Notice Plan Filing |
| January 20, 2026 | 20261-227121-01 | PUC | Comments Received Outside of Comment Period - Karen Plemel |
| December 23, 2025 | 202512-226122-01 | Minnesota Power, Great River Energy, and Otter Tail Power Company | Maple River - Cuyuna Seventh Status Update |
| December 11, 2025 | 202512-225740-01 | PUC | Introductory CN Application Meeting |
| November 10, 2025 | 202511-224784-01 | Minnesota Power, Great River Energy, and Otter Tail Power Company | Sixth Status Update |
| October 21, 2025 | 202510-224125-01 | PUC | |
| October 16, 2025 | 202510-224022-01 | PUC | October 16, 2025 Consent |
| October 16, 2025 | 202510-224007-01 | PUC | Proposed consent items |
| October 13, 2025 | 202510-223827-02 | DOC DER | on Exemption Petition |
| October 13, 2025 | 202510-223827-01 | DOC DER | on Notice Plan Petition |
| October 6, 2025 | 202510-223629-02 | Minnesota Power, Great River Energy, and Otter Tail Power Company | Certificate of Service - Notice Plan Petition |
| October 6, 2025 | 202510-223629-01 | Minnesota Power, Great River Energy, and Otter Tail Power Company | Notice Plan Petition |
| October 6, 2025 | 202510-223630-01 | Minnesota Power, Great River Energy, and Otter Tail Power Company | |
| October 6, 2025 | 202510-223630-02 | Minnesota Power, Great River Energy, and Otter Tail Power Company | Certificate of Service |
| September 26, 2025 | 20259-223337-01 | Minnesota Power, Great River Energy, and Otter Tail Power Company | Fifth Status Update |
| September 16, 2025 | 20259-223065-02 | DOC DER | Exemption Request |
| September 16, 2025 | 20259-223065-01 | DOC DER | Notice Plan |
| September 2, 2025 | 20259-222608-01 | PUC | NOTICE OF COMMENT PERIOD ON REQUEST FOR EXEMPTION FROM CERTAIN CERTIFICATE OF NEED APPLICATION CONTENT REQUIREMENTS |
| August 27, 2025 | 20258-222474-01 | Minnesota Power, Great River Energy, and Otter Tail Power Company | Maple River-Cuyuna Notice Plan Petition |