Otter Tail Power files supplemental IRP; plans 200 MW solar, 200 MW wind, potential Coyote Station exit

Otter Tail Corp

Plans to add ~200 MW solar (2027-2028) and ~200 MW wind (2029) plus LNG storage at Astoria Station in 2026.
Repowering four existing wind facilities in 2024-2025; seeks to create regulatory asset for potential Coyote Station exit.
Potential withdrawal from 35% ownership in Coyote Station coal plant if major non-routine capital needed; estimated costs $68.5M at end-2028.
Filing updates 2022 IRP; cites MISO reserve margins, Inflation Reduction Act tax credits, Minnesota Clean Energy Bill, market volatility.

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