20250731Q2 Cover Letter 6-2025.pdf

11
Avista Corp.
1411 East Mission P.O. Box 3727
Spokane, Washington 99220-0500
Telephone [phone]
Toll Free 800-727-9170
July 15, 2025
Monica Barrios-Sanchez
Commission Secretary
Idaho Public Utilities Commission
11331 W. Chinden Blvd. Bldg. 8 Suite 201-A
Boise, Idaho 83714
Dear Commission Secretary,
Purchase Cost Adjustment(PCA) Report for the Quarter Ended June 2025
Pursuant to Order No. 36339, enclosed is an electronic copy of Avista's electric Power Cost
Adjustment(PCA)report for quarter ended June 30, 2025.
As identified within the Order, the Company is including two additional files:
1. Attachment A—Q2 2025 -Power Transaction Register("PTR")
2. Attachment B—Q2 2025 - Gas Accounting Data Download("GADD")
The provided attachments contain TRADE SECRET, PROPRIETARY or CONFIDENTIAL
information and are filed under IDAPA 31.01.01, Rule 067 and 233, and Section 9-340D, Idaho
Code.
For the quarter ended June 30, 2025, total power supply expenses were higher than authorized for
the Idaho jurisdiction by $420,8721 as shown on page 43 (line 352) of the attached report. For the
July 2024 through June 2025 PCA reporting period, when including the impact of the EIM O&M
deferral, WA I-937 renewable energy credit benefits, and interest the total deferral is currently a
rebate of$7,913,979 (page 41).
If you have any questions,please contact Ryan Finesilver at [phone].
1 Excluding adjustments related to EIM expenses
2 Total of April,May,and June values on line 35.

Sincerely,
IS/Patrick D. El-w-b-cw
Patrick D. Ehrbar
Director of Regulatory Affairs