20241015Compliance Filing(Redacted).pdf

11
RECEIVED
Tuesday, October 15, 2024
Avista Corp. IDAHO PUBLIC
1411 East Mission P.O. Box 3727 UTILITIES COMMISSION
Spokane, Washington 99220-0500
Telephone [phone]
Toll Free 800-727-9170
October 15, 2024
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 September 2024
Pursuant to Order No. 36339, enclosed is an electronic copy of Avista's electric Power Cost
Adjustment(PCA)report for quarter ended September 30, 2024.
As identified within the Order, the Company is including two additional files:
1. Attachment A—Q3 2024 -Power Transaction Register("PTR")
2. Attachment B —Q3 2024 - 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 September 30,2024,total power supply expenses were lower than authorized
for the Idaho jurisdiction by$1,802,476,as shown on page 55 (line 351)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$1,839,726 (page 52).
In anticipation of Commission Order for the 2024 PCA annual rate adjustment filing,Avista made
adjustments to its prior PCA year deferral balance in the August 2024 journal related to Clearwater
Paper and Chelan/Columbia Basin Hydro (CBH) in the amounts of $741,563 and $581,315
respectively.
1 Total of July,August,and September values on line 35.

If you have any questions,please contact Ryan Finesilver at [phone].
Sincerely,
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Patrick D. Ehrbar
Director of Regulatory Affairs