20260811Decision Memo.pdf

DECISION MEMORANDUM
TO: COMMISSIONER LODGE
COMMISSIONER HAMMOND
COMMISSIONER HARDIE
COMMISSION SECRETARY
COMMISSION STAFF
LEGAL
FROM: ERIKA K. MELANSON
DEPUTY ATTORNEY GENERAL
DATE: AUGUST 11, 2027
SUBJECT: IN THE MATTER OF IDAHO POWER COMPANY'S PETITION TO
EVALUATE CLASS COST-OF-SERVICE METHODOLOGY, CONSIDER
ALTERNATIVE CLASS COST-OF-SERVICE STUDIES, AND
DETERMINE COST OF SERVICE CONSIDERATIONS FOR NEW
LARGE-LOAD CUSTOMERS; CASE NO. IPC-E-26-07.
On March 31, 2026, Idaho Power Company ("Company") petitioned the Idaho Public
Utilities Commission ("Commission") requesting to initiate a docket to evaluate and develop a
record on the Company's Class Cost-of-Service ("CCOS") methodology including consideration
of alternative methodologies ("Petition").
On April 13, 2026, the Commission issued a Notice of Petition and Notice of Intervention
Deadline. Order No. 36998. The Commission granted intervention to: Ruveon LLC, an affiliate of
Bayer Corporation ("Bayer"), the city of Boise City ("Boise City" or "City"), Clean Energy
Opportunities for Idaho ("CEO"), the United States Department of Energy, on behalf of itself and
other federal executive agencies ("FEA"), Idaho Irrigation Pumpers Association, Inc. ("IIPA"),
the Industrial Customers of Idaho Power ("ICIP"), Micron Technology, Inc. ("Micron"), and the
Northwest Energy Coalition("NWEC"). Order Nos. 36997, 37019, 37032, 37040, and 37052. The
Commission issued a Notice of Parties on May 12, 2026, and an Amended Notice of Parties on
June 1, 2026.
THE PETITION AND SCHEDULING CONSIDERATIONS
The Company's Petition arises from the Stipulation and Settlement ("Stipulation")
approved by the Commission in the Company's 2025 General Rate Case("GRC"). Case No. IPC-
E-25-16. Under the Stipulation, the Company agreed to "initiate a single-issue case related to
DECISION MEMORANDUM 1

CCOS methodology for the Commission's consideration in advance of filing a Notice of Intent for
its next GRC . . .."Id., Order No. 36892. In approving the Stipulation, the Commission found that
"a focused, single-issue proceeding will provide the Company, [Commission] Staff, and
intervening parties with the most effective forum to collaborate, develop a robust record, and
examine the CCOS methodology."Id.
Since the Petition was filed, Commission Staff ("Staff") has facilitated two full-day
workshops involving the Company and the intervening parties. These workshops provided the
parties with an opportunity to define the purpose and scope of the proceeding,establish the desired
outcomes, examine the Company's current CCOS methodology, exchange information and data,
and collaboratively evaluate potential alternative methodologies.
STAFF RECOMMENDATION
Staff, intervenors, and the Company have communicated regarding a proposed procedural
schedule for processing this case. Staff recommends the Commission issue a Scheduling Order
establishing:
• September 23, 2026: Company Comments/Testimony/Proposal
• November 25, 2026: Staff and Intervenor Comments/Testimony/Proposals
• December 14, 2026: Public Comment Deadline
• January 13, 2027: All Party Written Testimony
• Week of January 18, 2027: Technical Hearing at a time and place to be set by
Order of the Commission.
0 30-minute opening statements/presentation of proposal
o Questions to presenting party following opening statements
o Witness testimony
o Questions to witnesses
COMMISSION DECISION
Does the Commission with to issue a Scheduling Order establishing the above procedural
schedule?
0A&
En' a K. Melanson
Deputy Attorney General
I TegaRELECTRIC\IPC-E-26-07_CCOS\memos\IPCE2607_dec3_sched_em.docx
DECISION MEMORANDUM 2