20250522Notice_of_ Petition_Order_No_36606.pdf

Office of the Secretary
Service Date
May 22,2025
BEFORE THE IDAHO PUBLIC UTILITIES COMMISSION
IN THE MATTER OF IDAHO POWER ) CASE NO. IPC-E-25-21
COMPANY'S PETITION TO UPDATE )
COLSTRIP-RELATED ADJUSTABLE ) NOTICE OF PETITION
PORTION OF AVOIDED COST RATES FOR )
EXISTING PURPA CONTRACTS ) NOTICE OF MODIFIED
PROCEDURE
ORDER NO. 36606
On May 1,2025,Idaho Power Company("Company")petitioned the Idaho Public Utilities
Commission("Commission") for an order updating the annual Colstrip-related adjustable portion
of the published avoided cost rates for existing Public Utility Regulatory Policies Act of 1978
("PURPA") contracts.
The Commission has established a method for determining the annual adjustable-rate
portion of avoided costs for those contracts using variable cost data from Avista Corporation's
("Avista") Federal Energy Regulatory Commission ("FERC") Form 1 associated with Colstrip—
a coal-fired generating facility in southeast Montana. Order No. 28708, Case No. GNR-E-99-01.
NOTICE OF PETITION
YOU ARE HEREBY NOTIFIED that the Company represents that it has calculated that
the Colstrip-related adjustable rate will change from 22.74 mill/kilowatt hour ("kWh") to 24.56
mill/kWh, effective July 1, 2025. Petition at 2. The Company submitted the relevant pages from
Avista's FERC Form I as Attachment A to the Petition.Id.
COLSTRIP ADJUSTABLE RATE CALCULATION
For Period 7/1/2025-6/30/2026
Colstrip Fuel Cost Data
Fuel $30,975,829
Net Generation(kWh) 1,373,013,000
Fuel Cost per kWh $0.022560
Fuel Cost per MWh $22.5605
Variable O&M,Taxes,and Line Loss Cost per MWh $2.00
Total Colstrip Adjustable Rate $24.5605
*Colstri p fuel cost data sourced from Avista FERC Form 1 for CY 2024;Page
402-403,Lines 12 and 20.
NOTICE OF PETITION
NOTICE OF MODIFIED PROCEDURE
ORDER NO. 36606 1

YOU ARE FURTHER NOTIFIED that the Company represents that because Avista's
ownership stake in the Colstrip facility will be transferred to NorthWestern Corporation d/b/a
Northwestern Energy ("NorthWestern") as of December 31, 2025, and Avista will no longer
include Colstrip data in its FERC Form 1, the Company intends to use Colstrip data from
NorthWestern's FERC Form I for future annual updates. Id. at 3.
YOU ARE FURTHER NOTIFIED that the Company represents that if it is unable to access
necessary data after NorthWestern assumes Avista's interest in the Colstrip facility or if the
Company suspects the NorthWestern data results in a skewed update due to ownership and
reporting differences, the Company will work with Commission Staff to find a dataset or
mechanism that leads to an adjustable rate that meets the intent of the prior Commission orders.
Id.
YOU ARE FURTHER NOTIFIED that the Petition and supporting documents are
available for public inspection during regular business hours at the Commission's office. The
Petition is 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 Petition
may file a written comment explaining why the person supports or opposes the Petition. 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
NOTICE OF PETITION
NOTICE OF MODIFIED PROCEDURE
ORDER NO. 36606 2

must do so within 21 days of the issuance of this order. Comments must be filed through the
Commission's website or by e-mail unless computer access is unavailable. To comment
electronically, please access the Commission's website at hqp://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 Megan Goicoechea Allen
Idaho Public Utilities Commission Donovan Walker
P.O. Box 83720 Idaho Power
Boise, ID 83720-0074 1221 West Idaho Street(83702)
secretgU&puc.idaho._og_v P.O. Box 70
Boise, Idaho 83707
Street Address for Express Mail: mgoicoecheaallen&idahopower.com
dwalkergidahopower.com
11331 W. Chinden Blvd. energycontracts&idahopower.com
Building 8, Suite 201-A docketsgidahopower.com
Boise, ID 83714
YOU ARE FURTHER NOTIFIED that the Company must file any reply comments within
28 days of the issuance of this order.
NOTICE OF PETITION
NOTICE OF MODIFIED PROCEDURE
ORDER NO. 36606 3

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.
ORDER
IT IS HEREBY ORDERED that the Petition be processed by Modified Procedure. Persons
interested in filing written comments must do so within 21 days of the issuance of this order. The
Company must file any reply comments within 28 days of the issuance of this order.
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 22°d day of
May 2025. /
G
EDWARD LODGE, P SIDENT
gtll�
4RHAMMOND JR., COMMISSIONER
1
DAYN HA DIE, COMMISSIONER
ATTEST:
P.- f)
Commission Secre
I:\Legal\ELECTRIC\IPC-E-25-21_colstrip\orders\IPCE2521_Ntc_Ptn_Mod j l.docx
NOTICE OF PETITION
NOTICE OF MODIFIED PROCEDURE
ORDER NO. 36606 4