---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-26-015443"
form_type: "8-K"
ticker: "AVA"
cik: "0000104918"
company_name: "AVISTA CORP"
filed_at: "2026-01-16T23:59:59+00:00"
generated_at: "2026-05-16T09:42:37.852578+00:00"
event_type: "regulatory"
sentiment: "neutral"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# Avista files 4-year rate plan with Washington regulator seeking $111M electric, $12M gas hike in 2027

## Summary
- Requests $111M electric (+13.9%) and $12M natural gas (+4.7%) base revenue increase for 2027.
- Proposes overall rate of return 7.5%, 48.5% common equity, 10.2% ROE in 2027; rising to 7.67% and 10.5% ROE in 2029.
- Key 2027 cost drivers: $46M electric resource costs, $29M capital additions, $7M employee benefits, $4M wildfire costs.
- Seeks changes to baseline power supply cost calculation and new deferral mechanism for employee benefits costs.
- WUTC has up to 11 months to review and issue a decision on the rate plan.

## SEC filing metadata
- accession: 0001193125-26-015443
- form_type: 8-K
- ticker: AVA
- cik: 0000104918
- company_name: AVISTA CORP
- filed_at: 2026-01-16T23:59:59+00:00
- event_type: regulatory
- sentiment: neutral
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/104918/000119312526015443/0001193125-26-015443-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/104918/000119312526015443/ava-20260116.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-26-015443
- JSON: https://secwatch.observer/filing/0001193125-26-015443.json
- Plain text: https://secwatch.observer/filing/0001193125-26-015443.txt

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