---
schema_version: "secwatch.filing_event.v1"
accession: "0001466593-23-000165"
form_type: "8-K"
ticker: "OTTR"
cik: "0001466593"
company_name: "Otter Tail Corp"
filed_at: "2023-12-21T23:59:59+00:00"
generated_at: "2026-06-07T08:57:53.205212+00:00"
event_type: "regulatory"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Otter Tail Power proposes bifurcated resource plan, Coyote Station as emergency resource by 2029

## Summary
- Otter Tail Power submitted a supplemental IRP to the MN PUC proposing bifurcated resource planning between Minnesota and other jurisdictions.
- Preferred Minnesota plan includes repowering four wind facilities in 2025, adding ~200 MW solar in 2025 and ~150 MW wind in 2026/2032.
- Requests designation of Coyote Station coal plant as Available Maximum Emergency Resource from 2029; OTP may withdraw if major non-routine capital needed.
- New plan adjusts timing and amount of renewable additions vs. March 2023 filing; MPUC hearing scheduled for January 4, 2024.
- Bifurcated planning would serve Minnesota with dedicated resources, diverging from historical integrated approach; future filings for ND and SD planned.

## SEC filing metadata
- accession: 0001466593-23-000165
- form_type: 8-K
- ticker: OTTR
- cik: 0001466593
- company_name: Otter Tail Corp
- filed_at: 2023-12-21T23:59:59+00:00
- event_type: regulatory
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1466593/000146659323000165/0001466593-23-000165-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1466593/000146659323000165/ottr-20231215.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001466593-23-000165
- JSON: https://secwatch.observer/filing/0001466593-23-000165.json
- Plain text: https://secwatch.observer/filing/0001466593-23-000165.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.