Minnesota Power outlines 160‑mile Maple River–Cuyuna transmission project, says PUC route permits supersede local zoning
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Summary
Minnesota Power presented the Maple River–Cuyuna (MRC) transmission project — roughly 160 miles of single‑circuit 345 kV line on double‑circuit capable structures — and said the Certificate of Need and route permitting processes are planned this year with construction possible in 2029 and in‑service by 2033.
Drew Jane Key, environmental compliance specialist with Minnesota Power, briefed the Becker County Board on the Maple River–Cuyuna transmission project, an approximately 160‑mile single‑circuit 345 kilovolt line designed on double‑circuit‑capable steel monopoles.
Key said the project was included in MISO’s tranche 2.1 approvals in December 2024 and that Minnesota Power, Otter Tail Power and Great River Energy will co‑own the line. He described the routing and permitting schedule: a certificate of need application expected by January/early February and a route permit application planned for August. Key said permitting will occur in both Minnesota and North Dakota and that roughly 95% of the line is expected to be in Minnesota. He noted opportunities for the public to comment during the route permitting process and said the company plans a third round of public open houses in late March to present a preferred route.
On local authority, Key said: “The Public Utilities Commission route permit typically supersedes local zoning ordinances.” He added that Minnesota Power seeks to co‑locate new lines alongside existing high‑voltage corridors where feasible and described structure designs (monopoles 120–180 feet tall; right‑of‑way widths of about 150 feet for a standalone 345 kV line, with up to 30 feet overlap in co‑location scenarios).
Board members asked about condemnation authority, reliability benefits, and whether the project will ease outages; Key replied that PUC permits can trigger condemnation authority but that the company tries to avoid that by working with landowners and that the project aims to improve regional reliability and relieve congestion. He estimated construction could begin in 2029 with service by no later than 2033, subject to routing and permitting.