20251202Decision Memo.pdf

DECISION MEMORANDUM
TO: COMMISSIONER LODGE
COMMISSIONER HAMMOND
COMMISSIONER HARDIE
COMMISSION SECRETARY
COMMISSION STAFF
LEGAL
FROM: JASON TALFORD, COMMISSION STAFF
JEFFREY R. LOLL, DEPUTY ATTORNEY GENERAL
DATE: DECEMBER 2, 2025
SUBJECT: IN THE MATTER OF THE APPLICATION OF INTERMOUNTAIN GAS
COMPANY FOR A DETERMINATION OF 2023 ENERGY EFFICIENCY
EXPENSES AS PRUDENTLY INCURRED AND APPROVAL OF RATE
SCHEDULE EE-RS; CASE NO. INT-G-24-05.
On December 20, 2024, Intermountain Gas Company ("Company") applied to the Idaho
Public Utilities Commission ("Commission") requesting an order: (1) designating $ 3,846,358 of
the 2023 energy efficiency expenditures as prudently incurred by the Company; (2) approving the
proposed revisions to Rate Schedule EE-RS; and(3) approving the Company's use of the deemed
savings methodology for evaluating the cost-effectiveness of the Energy Efficiency Program("EE
Program") ("Application"). The Company's Application included its 2023 Energy Efficiency
Annual Report; an Evaluation, Measurement, and Verification Study; and proposed revised Rate
Schedule EE-RS.
On October 14, 2025, the Commission issued Order No. 36797. In its Order, the
Commission approved the Company's proposal to retire the Storage Water Heater,Tankless Water
Heater Tier II, Whole Home Tier II, and Smart Thermostat rebates; accepted the Company's
proposal to reduce the Furnace—95% AFUE rebate from $350 to $275; directed the Company to
continue to offer the current rebate amounts for the Whole Home 1, Combination Boiler,Boiler-
95%AFUE, and Tankless Water Heater Tier 1 programs, and directed the Company to notify the
Commission concerning the timeline and results of its EE Program Audit.
DECISION MEMORANDUM - I - DECEMBER 2, 2025

On November 21, 2025, the Company submitted a compliance filing updating the Rate
Schedule EE-RS—Residential Energy Efficiency Rebate Program tariff and providing notification
and results of its internal EE Program Audit in compliance with the Commission Order. Staff has
reviewed the attached tariffs and verified that the proposed adjustments are consistent with the
Commission's Order. Additionally, the Company's notification meets the direction of the
Commission's Order.
STAFF RECOMMENDATION
Staff recommends the Commission approve the Company's compliance filing as written
and acknowledge the Company's notification.
COMMISSION DECISION
Does the Commission wish to approve the Company's compliance filing as written and
acknowledge the Company's notification?
Jason Talford
Commission Staff
I:\Uti1ity\UDMEM0S\INT-G-24-05 Decision Memo.docx
DECISION MEMORANDUM - 2 - DECEMBER 2, 2025