---
schema_version: "secwatch.filing_event.v1"
accession: "0001466593-24-000149"
form_type: "8-K"
ticker: "OTTR"
cik: "0001466593"
company_name: "Otter Tail Corp"
filed_at: "2024-12-31T23:59:59+00:00"
generated_at: "2026-05-28T21:38:08.179148+00:00"
event_type: "regulatory"
sentiment: "positive"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Otter Tail Power gets $13.1M rate increase in North Dakota settlement

## Summary
- NDPSC approved settlement on Dec 30, 2024 granting $13.1M (6.18%) annual base rate revenue increase.
- Allowed return on equity of 10.10% on 53.5% equity ratio; revenue requirement cut $3M for tax credits and load adjustments.
- Earnings-sharing provision: above 10.20% ROE, 70% refunded to customers, OTP retains 30%.
- New base rates expected to be implemented in Q1 2025.

## SEC filing metadata
- accession: 0001466593-24-000149
- form_type: 8-K
- ticker: OTTR
- cik: 0001466593
- company_name: Otter Tail Corp
- filed_at: 2024-12-31T23:59:59+00:00
- event_type: regulatory
- sentiment: positive
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1466593/000146659324000149/0001466593-24-000149-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1466593/000146659324000149/ottr-20241230.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001466593-24-000149
- JSON: https://secwatch.observer/filing/0001466593-24-000149.json
- Plain text: https://secwatch.observer/filing/0001466593-24-000149.txt

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