Washington / electric
Avista Corporation
Rate cases before the Washington Utilities and Transportation Commission.
Avista Corporation has 14 pending rate cases before the Washington Utilities and Transportation Commission.
The requested increase has not yet been extracted from the filed application for these cases.
No decision date has been scheduled on the record yet.
Rate cases (14)
WA UE-260007 Active
General Rate Case.
- Filed
- 2026-01-02
- Requested increase
- not yet extracted
- Decision expected
- not scheduled
- Last filing
- 2026-06-23
WA UE-240006 Active
General Rate Case to increase rates and charges in a Two-Year Rate Plan which would begin with new base rates effective December 2024 (Rate Year 1) and December 2025 (Rate Year 2). (Do Not Change Summary.)
- Filed
- 2024-01-03
- Requested increase
- not yet extracted
- Decision expected
- not scheduled
- Last filing
- 2026-07-10
WA UE-220053 Active
General Rate Case for a Two-Year Rate Plan which would begin with new base rates effective in December 2022 (Rate Year 1) and December 2023 (Rate Year 2). For Rate Year 1, the proposed increases reflect an electric base rate relief of approximately $52.9 million, or 9.6%. Concurrent with the effective date of this rate case, the Company proposes to return to customers estimated incremental deferred Customer Tax Benefits of approximately $25.5 million for electric over a two-year amortization period, through Tariff Schedule 78 titled “Residual Tax Customer Credit” -offsetting in part the Company’s requested electric Rate Year 1 base rate relief in effect from December 2022 and continuing through the two-year Rate Plan. The overall net increase for Rate Year 1 on a billed basis, after reflecting the “Residual Tax Customer Credit” offset, would be 7.4% for electric operations. For Rate Year 2 of the Two-Year Rate Plan, the proposed increases reflect an electric base rate relief of $17.1 million, or 2.8%, effective December 2023. The Company’s request is based on a proposed rate of return of 7.31% with a common equity ratio of 48.5% and a 10.25% return on equity. (Do Not Change Summary)
- Filed
- 2022-01-21
- Requested increase
- not yet extracted
- Decision expected
- not scheduled
- Last filing
- 2026-04-21
WA UE-200900 Dormant
General Rate Case for electric operations, Avista is proposing an overall increase in electric base revenues of $44.2 million or 8.3 percent. On a billed revenue basis the increase in revenue is 0.0 percent, after taking into account the Tax Customer Credit. (Do Not Change Summary)
- Filed
- 2020-10-30
- Requested increase
- not yet extracted
- Decision expected
- not scheduled
- Last filing
- 2023-06-02
WA UE-190334 Recently active
General rate case for electric service, Tariff WN U-28, to implement a Two-Year Rate plan with new rates effective April 1, 2020 and April 1, 2021, respectively. The rate plan proposes an increase 9.1 percent in base rates or $45.8 million for RY 1, and an increase of 3.3 percent in base rates or $18.9 million for RY 2. (Do Not Change Summary)
- Filed
- 2019-04-30
- Requested increase
- not yet extracted
- Decision expected
- not scheduled
- Last filing
- 2026-03-18
WA UE-170485 Dormant
Revises Tariff WN U-28 reflecting a general rate increase for Washington State customers. The Company's request is based on a proposed rate of return of 7.76 percent with a common equity ratio of 50.0 percent and a 9.9 percent return on equity.
- Filed
- 2017-05-26
- Requested increase
- not yet extracted
- Decision expected
- not scheduled
- Last filing
- 2023-02-08
WA UE-160228 Dormant
General Rate Case to revise Tariff No. WN U-28 to increase electric revenues $38.6 million (7.8 percent) in the first year of an 18 month rate plan plus a revenue increase of $10.3 million (3.9 percent) for the last six months offset by refunds from the Energy Recovery Mechanism.
- Filed
- 2016-02-19
- Requested increase
- not yet extracted
- Decision expected
- not scheduled
- Last filing
- 2021-01-05
WA UE-150204 Dormant
General rate increase for electric services RE: Tariff WN U-28, which proposes an overall increase in electric base revenues of $33.2 million or 6.6% (6.7% in billed rates) effective March 12, 2015.
- Filed
- 2015-02-09
- Requested increase
- not yet extracted
- Decision expected
- not scheduled
- Last filing
- 2020-07-06
WA UE-110876 Dormant
A general rate increase of 8.7 percent or $38.3 million. If granted, an average residential customer using 977 kilowatt-hours per month would receive an increase of $7.13, or 9.3 percent. Other customer class customers would receive increases of 7.5 to 9.1 percent. Avista serves 235,493 electricity customers in eastern Washington.
- Filed
- 2011-05-16
- Requested increase
- not yet extracted
- Decision expected
- not scheduled
- Last filing
- 2020-06-10
WA UE-100467 Dormant
General rate increase to recover increased electric cost. Annual revenue impact is approximately $55.3 Million (13.4 percent).
- Filed
- 2010-03-23
- Requested increase
- not yet extracted
- Decision expected
- not scheduled
- Last filing
- 2014-06-09
WA UE-090134 Dormant
General rate increase to recover increased costs. Annual revenue impact is approximately $69.8 Million (16 percent)
- Filed
- 2009-01-23
- Requested increase
- not yet extracted
- Decision expected
- not scheduled
- Last filing
- 2015-02-17
WA UE-080416 Dormant
General rate increase to recover increased costs. Annual revenue impact is approximately $36.6 Million (10.3 percent).
- Filed
- 2008-03-04
- Requested increase
- not yet extracted
- Decision expected
- not scheduled
- Last filing
- 2010-04-02
WA UE-060665 Dormant
Petition for an accounting order to defer the cost of loans made to the regional transmission organization, Grid West, and to defer consideration of amortization and cost recovery in a future general rate case.
- Filed
- 2006-04-27
- Requested increase
- not yet extracted
- Decision expected
- not scheduled
- Last filing
- 2006-07-26
WA UE-011595 Recently active
General rate increase of 18 percent including an interim rate increase of 10 percent. Filing also includes subsequent reduction in the power cost surcharge rate of 8 percent and a 5-year extension of the surcharge.
- Filed
- 2001-12-03
- Requested increase
- not yet extracted
- Decision expected
- not scheduled
- Last filing
- 2026-01-15
Activity status is derived from filing activity on the state portal, not an official commission status designation.
The full procedural schedule is part of RateDocket Pro
- Every intervention, testimony, hearing and briefing deadline, with the page of the order it came from
- Email and webhook alerts 30 and 7 days before each intervener deadline
- Authorized and requested ROE, test year, and revenue-requirement detail
- Party and intervenor lists
- The cross-state board of every active rate case