20260612Staff Comments.pdf

RECEIVED
June 12, 2026
ERIKA K. MELANSON IDAHO PUBLIC
DEPUTY ATTORNEY GENERAL UTILITIES COMMISSION
IDAHO PUBLIC UTILITIES COMMISSION
PO BOX 83720
BOISE, IDAHO 83702
[phone]
IDAHO BAR NO. 11560
Attorney for the Commission Staff
BEFORE THE IDAHO PUBLIC UTILITIES COMMISSION
IN THE MATTER OF IDAHO POWER )
COMPANY'S PETITION TO UPDATE THE ) CASE NO. IPC-E-26-14
COLSTRIP-RELATED ADJUSTABLE )
PORTION OF AVOIDED COST RATES FOR )
EXISTING PURPA CONTRACTS ) COMMENTS OF THE
COMMISSION STAFF
COMMISSION STAFF ("STAFF") OF the Idaho Public Utilities Commission
("Commission"), by and through its attorney of record, Erika K. Melanson, Deputy Attorney
General, submits the following comments.
BACKGROUND
On May 1, 2026, Idaho Power Company ("Company") petitioned the Commission
requesting an update to the Colstrip-related adjustable portion of the avoided cost rates for certain
Public Utility Regulatory Policies Act("PURPA") contracts ("Petition").
The Commission has established a method for determining the annual adjustable portion
of avoided cost rates for certain contracts, using variable cost data of Colstrip from Avista
Corporation's Federal Energy Regulatory Commission("FERC") Form 1. Order No. 28708 at 8.
The Company proposes to update the Colstrip-related adjustable portion of the avoided
cost rate from 24.56 mill/kilowatt hour("kWh")to 24.40 mill/kWh,effective July 1,2026.Petition
at 2. The Company submitted the relevant pages from Avista Corporation's FERC Form I used
to calculate the proposed rate.
STAFF COMMENTS I DUE JUNE 18, 2026

STAFF ANALYSIS
Staff believes the Company's proposed Colstrip-related adjustable rate of 24.40 mills/kWh
is correct and recommends approval. To ensure that the proposed Colstrip-related adjustable rate
is correct, Staff needed to determine if the calculations used to determine the rate was based on the
method authorized by the Commission through Order No. 28708 and that the inputs in the
calculation were the correct variable cost data from Avista Corporation's FERC Form 1. Through
its review, Staff verified that the Company's method used to calculate the rate complies with Order
No. 28708 and that the data used was the correct data.
STAFF RECOMMENDATION
Staff recommends the Commission approve the Colstrip-related adjustable rate of 24.40
mills/kWh, with an effective date of July 1, 2026.
Respectfully submitted this 12th day of June 2026.
Erika K. Melanson
Deputy Attorney General
Technical Staff. Yao Yin
I:\Utility\UMISC\COMMENTS\IPC-E-26-14 Comments.docx
STAFF COMMENTS 2 DUE JUNE 18, 2026

CERTIFICATE OF SERVICE
I HEREBY CERTIFY THAT I HAVE THIS 12th DAY OF JUNE 2026, SERVED
THE FOREGOING COMMENTS OF THE COMMISSION STAFF, IN CASE NO. IPC-
E-26-14, BY E-MAILING A COPY THEREOF, TO THE FOLLOWING:
DONOVAN E. WALKER CAMILLE CHRISTEN
LISA C. LANCE IDAHO POWER COMPANY
REGULATORY DOCKETS PO BOX 70
IDAHO POWER COMPANY BOISE ID 83707-0070
PO BOX 70 E-MAIL:
BOISE ID 83707 cchristengidahopower.com
E-MAIL:
dwalkergidahopower.com
llancegidahopower.com
mgoicoecheaallengidahopower.com
dockets(aidahopower.com
PATRICIA JORDAII, SECRETARY
CERTIFICATE OF SERVICE