20260630Compliance Filing.pdf

RECEIVED
June 30, 2026
IDAHO PUBLIC
UTILITIES COMMISSION
11
Avista Corp.
1411 East Mission P.O. Box 3727
Spokane. Washington 99220-0500
Telephone [phone]
Toll Free 800-727-9170
Via Electronic Mail
June 30, 2026
Commission Secretary
State of Idaho
Idaho Public Utilities Commission
11331 W. Chinden Blvd. Building 8, Suite 201-A
Boise, Idaho 83702-5983
RE: Tariff I.P.U.C. No. 28 (Electric) and Tariff I.P.U.C. No. 27 (Natural Gasj
Case Nos. AVU-E-25-01 and AVU-G-25-01
Compliance Tariff Filing
Commission Order No. 36741 - Case Nos. AVU-E-25-01 and AVU-G-25-01
Enclosed for electronic filing with the Commission are the compliance tariffs per the
Commission's Order No. 36741 in Case Nos. AVU-E-25-01 and AVU-G-25-01.
Electric
Twentieth Revision Sheet 001 canceling Nineteenth Revision Sheet 001
Twentieth Revision Sheet 011 canceling Nineteenth Revision Sheet 011
Twentieth Revision Sheet 021 canceling Nineteenth Revision Sheet 021
Second Revision Sheet 023 canceling First Revision Sheet 23
Twentieth Revision Sheet 025 canceling Nineteenth Revision Sheet 025
Twenty First Revision Sheet 025P canceling Twentieth Revision Sheet 025P
Twentieth Revision Sheet 031 canceling Nineteenth Revision Sheet 031
Nineteenth Revision Sheet 042 canceling Eighteenth Revision Sheet 042
Sixteenth Revision Sheet 042A canceling Fifteenth Revision Sheet 042A
Nineteenth Revision Sheet 044 canceling Eighteenth Revision Sheet 044
Nineteenth Revision Sheet 045 canceling Eighteenth Revision Sheet 045
Nineteenth Revision Sheet 046 canceling Eighteenth Revision Sheet 046
Eighth Revision Sheet 046A canceling Seventh Revision Sheet 046A
Nineteenth Revision Sheet 047 canceling Eighteenth Revision Sheet 047
Eighteenth Revision Sheet 049 canceling Seventeenth Revision Sheet 049
Natural Gas
Twentieth Revision Sheet 111 canceling Nineteenth Revision Sheet 111
Twenty first Revision Sheet 112 canceling Twentieth Revision Sheet 112

Seventeenth Revision Sheet 146 canceling Sixteenth Revision Sheet 146
These tariff sheets have an effective date of September 1, 2026, in compliance with the Order.
Also enclosed is a copy of the workpapers supporting the rate changes within the tariffs. If you
have any questions regarding this filing,please call Joe Miller at(509) 495-4546.
Sincerely,
/s/Patrick Ehrbar
Patrick Ehrbar
Director of Rates
Enclosures

CERTIFICATE OF SERVICE
I HEREBY CERTIFY that I have this 30th day of June, 2026, served the RY2 Compliance
Filing of Avista Corporation in Case Nos. AVU-E-25-01 and AVU-G-25-01, upon the
following parties by electronically providing a copy thereof, to:
Commission Staff: Clearwater Paper:
Adam Triplett Peter J. Richardson
Deputy Attorneys General Richardson Adams
Idaho Public Utilities Commission 515 N. 271h Street
11331 W. Chinden Blvd PO Box 7218
Building 8, Suite 201-A Boise, ID 83702
Boise, ID 83714 petergrichardsonadams.com
adam.triplett(a,puc.Idaho.gov
Dr. Don Reading
Monica Barrios-Sanchez 280 S. Silverwood Way
Idaho Public Utilities Commission Eagle, ID 83616
11331 W. Chinden Blvd dreading(a,mindspring com
Building 8, Suite 201-A
Boise, ID 83714 carol.haugen(i7�,clearwater2aper.com
secretgagpuc.idaho.gov jamie.mcdonaldkclearwaterpaper.com
Idaho Forest Group: Walmart:
Andrew P. Moratzka Norman M. Semanko
Eden A. Faure Parsons Behle & Latimer
Stoel Rives LLP 800 W. Main St., Suite 1300
33 South Sixth Street, Suite 4200 Boise, ID 83702
Minneapolis, MN 55405 nsemanko(&,parsonsbehle.com
andrew.moratzkagstoel.com
eden.faure(&,stoel.com Justina A. Caviglia
Parsons Behle & Latimer
Jennifer S. Palmer 50 West Liberty Street, Suite 750
Stoel Rives LLP Reno,NV 89502
101 S. Capitol Blvd., Suite 1900 jcavi lg ia(an,parsonsbehle.com
Boise, ID 83702 rshafferkparsonsbehle.com
j enny_palmer(&,stoel.com
Dr. Jaime McGovern
Senior Manager,
Utility Partnerships
Walmart Inc.
2608 Southeast " J" Street
Bentonville, AR 72716
Jaime.mc og vem&walmart.com
Patrick Ngalamulume
Parsons Behle & Latimer 800 West
Main Street, Ste 1300
Boise, Idaho 83702
pngalamulumegparsonsbehle.com
/s/Athena Allen
Athena Allen
Regulatory Affairs Analyst