Avista Corp. Colstrip Units 3 and 4 Tariff Revision - Schedule 99
Summary
The Washington UTC approved Avista Corporation's tariff revision to Schedule 99 (Colstrip Tracker) effective January 1, 2025. The revised tariff increases annual revenues by $18 million (2.7%) to reflect forecasted costs for Colstrip Units 3 and 4 for calendar year 2025. Rates are approved subject to refund pending the Commission's final determination of appropriate rates.
What changed
The Washington UTC issued an order on December 19, 2024, directing Avista Corporation to file revised tariff pages with an effective date of January 1, 2025, for Schedule 99 (Colstrip Tracker). The approved tariff increases annual revenues by $18 million, representing a 2.7% increase, with residential customers on 945 kWh/month usage seeing a $4.47 monthly increase (4.1%).
Affected parties should note that the increased rates are subject to refund pending the Commission's final determination. All parties to the proceeding must provide a status update to the UTC by March 31, 2025.
What to do next
- Monitor for final rate determination
- Provide status update to UTC by March 31, 2025
Archived snapshot
Apr 14, 2026GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.
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- UTC Case Docket Detail Page # UTC Case Docket Details
Docket Number 240891
| Docket Number | UE-240891 |
|---|---|
| Advice | |
| Company | Avista Corporation |
| DBA | Avista Utilities |
| Filing Type | Tariff Revision |
| Industry (Code) | Electric (140) |
| Status | Formal |
| Lead Staff | McGuire, Chris (UTC) |
| Filed Date | 10/31/2024 |
| Effective Date | 01/01/2025 |
| Summary | Revises Tariff WN U-28, Schedule 99, Colstrip Tracker. The purpose of this filing is to revise Schedule 99 rates to reflect forecasted costs for Colstrip Units 3 and 4 for calendar year 2025. The revised tariff would increase Avista’s annual revenues by $18 million, or 2.7 percent. A typical residential customer using 945 kWhs per month would see an increase of $4.47 per month, or 4.1 percent. (Do Not Change Summary.) |
Event History
- 02/11/2025 -- Formal
- 12/20/2024 -- Re-open
- 12/20/2024 -- Pending
- 12/19/2024 -- Continued (Commissioner Rendahl moved to issue an order:
- Directing Avista to file revised tariff pages by December 23, 2024 with an effective date of January 01, 2025 indicating the increased rates are subject to refund in this docket.
- To set the docket for adjudication.
- Pending the Commission’s final determination of appropriate rates, that approval of the rates subject to refund does not represent resolution of any matters raised in this docket.
- Require the parties to this proceeding to provide a status update to the commission by March 31, 2025. Commissioner Doumit seconded the motion. The motion carried (3:0) )
- 12/19/2024 -- Closed
- 12/19/2024 -- Open Meeting
- 11/19/2024 -- Pending
- 11/19/2024 -- Open (Docketed per request of Crystal Oliver via email. )
Named provisions
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