20260723Decision Memo.pdf

DECISION MEMORANDUM
TO: COMMISSIONER LODGE
COMMISSIONER HAMMOND
COMMISSIONER HARDIE
COMMISSION SECRETARY
COMMISSION STAFF
LEGAL
FROM: MICHAEL ELDRED, COMMISSION STAFF
CHRIS BURDIN,DEPUTY ATTORNEY GENERAL
DATE: JULY 23, 2026
SUBJECT: IN THE MATTER OF THE APPLICATION OF AVISTA CORPORATION
FOR THE AUTHORITY TO INCREASE ITS RATES AND CHARGES FOR
ELECTRIC AND NATURAL GAS SERVICE TO ELECTRIC AND
NATURAL GAS CUSTOMERS IN THE STATE OF IDAHO; CASE NOS.
AVU-E-25-01 AND AVU-G-25-01.
BACKGROUND
On January 31,2025,Avista Corporation("Company")applied to the Idaho Public Utilities
Commission ("Commission") requesting authorization to increase its rates for both Electric and
Natural Gas service ("Application"). The Company requested a Two-Year Rate Plan with a Rate
Year 1 effective date of September 1,2025, and a Rate Year 2 effective date of September 1,2026.
On June 9, 2025,the Company filed a Stipulation and Settlement("Proposed Settlement")
signed by Clearwater,IFG,Walmart,the Company,and Staff—all the parties to this case("Signing
Parties"). See IDAPA 31.01.01.056, .272, and.274. The Signing Parties agree that the Settlement
resolves the outstanding issues in this case.
On August 29, 2025, the Commission issued Order No. 36741 approving the Proposed
Settlement as filed. Order No. 36741 approved rate changes effective September 1, 2025, and
September 1,2026. On August 29,2025,the Company submitted a compliance filing that included
the tariffs approved in Order No. 36741 with an effective date of September 1, 2025, and the
Commission approved these tariffs in Order No. 36776.
DECISION MEMORANDUM - 1 - JULY 23, 2026

STAFF REVIEW
On June 30, 2026, the Company submitted a compliance filing that included tariffs with
the rate changes approved in Order No. 36741 with an effective date of September 1, 2026. Staff
reviewed the tariffs included in the Company's compliance filing and confirmed the tariffs are
consistent with the Commission's order.
STAFF RECOMMENDATION
Staff recommends the Commission approve the tariffs submitted on June 30,2026,as filed.
COMMISSION DECISION
Does the Commission wish to approve the tariffs submitted on June 30, 2026, as filed?
4 t,
Michael Eldred
Commission Staff
I:\Uti1ity\UDMEM0S\AVU-E-25-01 and AVU-G-25-01 Decision Memo.docx
DECISION MEMORANDUM - 2 - JULY 23, 2026