---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-22-154072"
form_type: "8-K"
ticker: "UTL"
cik: "0000755001"
company_name: "UNITIL CORP"
filed_at: "2022-05-18T23:59:59+00:00"
generated_at: "2026-06-25T10:36:57.004288+00:00"
event_type: "regulatory"
sentiment: "positive"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# NHPUC approves $5.9M permanent rate increase for Unitil Energy, 9.2% ROE

## Summary
- Permanent distribution rate increase of $5.9M effective June 1, 2022, reconciled back to June 2021 temporary rates.
- Return on equity approved at 9.2%; capital structure set at 52% equity, 48% long-term debt.
- Multi-year rate plan includes step adjustments for 2022 and 2023; no base rate case before January 2024.
- New revenue decoupling mechanism (RDM) adopted with a 3% cap on distribution revenue adjustments.
- Approved up to $2.362M for EV make-ready infrastructure and $5.28M for storm resiliency/vegetation programs.

## SEC filing metadata
- accession: 0001193125-22-154072
- form_type: 8-K
- ticker: UTL
- cik: 0000755001
- company_name: UNITIL CORP
- filed_at: 2022-05-18T23:59:59+00:00
- event_type: regulatory
- sentiment: positive
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 7.01, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/755001/000119312522154072/0001193125-22-154072-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/755001/000119312522154072/d344598d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-22-154072
- JSON: https://secwatch.observer/filing/0001193125-22-154072.json
- Plain text: https://secwatch.observer/filing/0001193125-22-154072.txt

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