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Minnesota Power outlines 345 kV Maple River–Cuyuna transmission proposal, schedules public engagement and permitting
Summary
Minnesota Power told the Clay County Board of Commissioners it proposes a roughly 160‑mile, 345 kV transmission line between Maple River and Cuyuna substations to improve regional reliability; company plans a certificate‑of‑need filing early next year and a separate route permit later in the year, with construction targeted to begin in 2029 and service by 2033.
Drew Janke, an environmental compliance specialist with Minnesota Power, told the Clay County Board of Commissioners on Nov. 25 that the Maple River–Cuyuna (MRC) transmission project would be a new 345‑kilovolt single‑circuit overhead line on double‑circuit capable structures, about 160 miles long, designed to increase capacity and regional reliability.
“We’re building the project to enhance the reliability of the regional transmission system and to enable cost‑effective bulk power transfer,” Janke said, describing the line as bidirectional so energy can flow in either direction depending on demand. He said Midcontinent Independent System Operator (MISO) approved the project in…
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