20260814Notice_Of_Application_Order_No_37132.pdf

Office of the Secretary
Service Date
August 14,2026
BEFORE THE IDAHO PUBLIC UTILITIES COMMISSION
IN THE MATTER OF AVISTA ) CASE NO. AVU-E-26-05
CORPORATION'S POWER COST )
ADJUSTMENT ANNUAL RATE ) NOTICE OF APPLICATION
ADJUSTMENT FILING )
NOTICE OF MODIFIED
PROCEDURE
ORDER NO. 37132
On July 31, 2026, Avista Corporation ("Company") applied to the Idaho Public Utilities
Commission ("Commission") requesting approval of the proposed Power Cost Adjustment
("PCA") surcharge for recovery of deferred power costs for the period July 1, 2025, through June
30, 2026, effective October 1, 2026 ("Application").
On August 6, 2026, the Company amended its Application to correct scriveners errors
("Amended Application").
With this Order we issue notice of the Company's Application and set public comment and
Company reply deadlines.
BACKGROUND
The PCA is a mechanism that monitors changes in revenues and costs associated with
hydroelectric generation, secondary market prices, thermal fuel costs, and revenues and expenses
from power contracts. Amended Application at 2. The current PCA rebate rate is 0.3010 per
kilowatt-hour ("kWh"), based on an overall rebate of approximately $9.6 million, which the
Commission approved in Order No. 36777, effective October 1, 2025, through September 30,
2026.
NOTICE OF APPLICATION
YOU ARE HEREBY NOTIFIED that the Company represents that the proposed PCA rate
adjustment of 0.1570 per kWh would surcharge approximately $14.6 million to customers
effective October 1, 2026. Amended Application at 3.
YOU ARE FURTHER NOTIFIED that the Company states that the proposed surcharge is
explained by the expiration of the existing rebate rate and power supply costs that exceeded the
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ORDER NO. 37132 1

costs embedded in retail rates. Id. The Company attributes the higher costs primarily to lower
market energy prices, the exclusion of certain wind generation resources from the authorized base
for September 2025 through August 2026,and higher customer loads during several months of the
year. Id.
YOU ARE FURTHER NOTIFIED that the Company anticipates that the average
Residential customer using an average of 939 kWh per month would see their monthly bill increase
$4.31. or 3.6%,per month.Id. at 6. Other customer classes would experience differing impacts as
a percentage of their monthly bills due to the uniform cents per kWh application of the PCA. Id.
at 5.
YOU ARE FURTHER NOTIFIED that the Amended Application and attachments are
available for public inspection during regular business hours at the Commission's office. The
Amended Application and attachments are also available on the Commission's website at
www.puc.idaho.gov. Click on the `ELECTRIC" icon, select"Open Cases," and click on the case
number as shown on the front of this document.
YOU ARE FURTHER NOTIFIED that all proceedings in this case will be held pursuant
to the Commission's jurisdiction under Title 61 of the Idaho Code, and that all proceedings in this
matter will be conducted pursuant to the Commission's Rules of Procedure, IDAPA 31.01.01.000
et seq.
NOTICE OF MODIFIED PROCEDURE
YOU ARE FURTHER NOTIFIED that the Commission has determined that the public
interest may not require a formal hearing in this matter, and that it will proceed under Modified
Procedure pursuant to the Commission's Rules of Procedure 201-204, IDAPA 31.01.01.201-.204.
The Commission notes that Modified Procedure and written comments have proven to be an
effective means for obtaining public input and participation.
YOU ARE FURTHER NOTIFIED that persons desiring to state a position on this
Amended Application may file a written comment explaining why the person supports or opposes
the Amended Application. Persons who would like a hearing must specifically request a hearing
in their written comments and explain why written comments alone are insufficient. Persons
interested in filing written comments, must do so by September 9, 2026. Comments must be
filed through the Commission's website or by e-mail unless computer access is unavailable. To
NOTICE OF APPLICATION
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ORDER NO. 37132 2

comment electronically,please access the Commission's website at www.puc.idaho.gov. Click the
"Case Comment Form" and complete the form using the case number as it appears on the front of
this document.
To file by e-mail,persons must e-mail the comments to the Commission Secretary and all
parties at the e-mail addresses listed below. Persons submitting a comment by e-mail must provide
their name, address, and the Case Number under which they are commenting. Persons submitting
a comment by e-mail also acknowledge that submitting a comment in an open case constitutes a
public record under Idaho Code § 74-101(13), and all information provided by such person is
available for public and media inspection.
If computer access is unavailable, then comments may be mailed to the Commission and
the Parties at the addresses below.Persons submitting a comment by mail must provide their name,
address, and the Case Number under which they are commenting. Persons submitting a comment
by mail also acknowledge that submitting a comment in an open case constitutes a public record
under Idaho Code§74-101(13),and all information provided by such person is available for public
and media inspection.
For the Idaho Public Utilities For the Company:
Commission:
Commission Secretary Anni Glogovac
Idaho Public Utilities Commission Counsel for Regulatory Affairs
P.O. Box 83720 Annette Brandon
Boise, ID 83702-0074 Strategic Initiatives Manager
secretM(ibpuc.idaho.gov 1411 E. Mission Avenue, MSC 27
Spokane, Washington 99220
anni.glo og vackavistacorp.com
annette.brandongavi stacorp.com
AvistaDockets(a)avistacorp.com
YOU ARE FURTHER NOTIFIED that the Company must file any reply comments by
September 16, 2026.
YOU ARE FURTHER NOTIFIED that if no written comments or protests are received
within the time limit set, the Commission will consider this matter on its merits and enter its final
order without a formal hearing. If written comments are received within the time limit set, the
Commission will consider them and, in its discretion, may set the same for formal hearing.
NOTICE OF APPLICATION
NOTICE OF MODIFIED PROCEDURE
ORDER NO. 37132 3

ORDER
IT IS HEREBY ORDERED that the Amended Application be processed under Modified
Procedure. Persons interested in submitting written comments must do so by September 9, 2026.
The Company must file any reply comments by September 16, 2026.
IT IS FURTHER ORDERED that parties comply with Order No. 35375, issued April 21,
2022. Generally, all pleadings should be filed with the Commission electronically and will be
deemed timely filed when received by the Commission Secretary.See Rule 14.02. Service between
parties should continue to be accomplished electronically when possible. However, voluminous
discovery-related documents may be filed and served on CD-ROM or a USB flash drive.
DONE by Order of the Idaho Public Utilities Commission at Boise, Idaho this 14th day of
August 2026.
G
EDWARD LODGE, PR&91DENT
(7-
R. HAMMOND JR., COMMISSIONER
DAYN HA DIE, COMMISSIONER
ATTEST:
om a anchez
Commission Secretary
IALegal\ELECTRICW VU-E-26-05_PCA\orders\AWE2605_ntc_app_mod_em.docx
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