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Home My WebLink About20260924Notice_of_Application_Order_No_37185.pdf Office of the Secretary Service Date September 24,2026 BEFORE THE IDAHO PUBLIC UTILITIES COMMISSION IN THE MATTER OF INTERMOUNTAIN ) CASE NO. INT-G-26-05 GAS COMPANY'S APPLICATION FOR ) AUTHORITY TO REVISE RATE ) NOTICE OF APPLICATION SCHEDULE EE-GS—GENERAL SERVICE ) ENERGY EFFICIENCY REBATE ) NOTICE OF SUSPENSION OF PROGRAM ) PROPOSED EFFECTIVE DATE NOTICE OF INTERVENTION DEADLINE ORDER NO. 37185 On September 9, 2026, Intermountain Gas Company ("Company") applied to the Idaho Public Utilities Commission("Commission")requesting authority to revise its commercial energy efficiency program under Rate Schedule EE-GS — General Service Energy Efficiency Rebate Program("Application"). The Company requests an effective date of October 1, 2026. The Commission now issues this Notice of Application;Notice of Suspension of Proposed Effective Date; and Notice of Intervention Deadline, setting a deadline for interested persons to intervene in the case. BACKGROUND The Company previously sought to revise its Rate Schedule EE-GS program in Case No. INT-G-25-07, filed on November 21,2025. Application at 3. In Order No. 37033 the Commission denied the Company's application and ordered it to reapply with proposed changes to Rate Schedule EE-GS accounting for information exchanged during workshops held with Commission Staff("Staff").Id. NOTICE OF APPLICATION YOU ARE HEREBY NOTIFIED that the Company launched its Commercial Energy Efficiency Program in April 2021. Id. The incentive offerings under Rate Schedule EE-GS were intended to promote energy efficiency among the Company's commercial customers by providing incentives for space-heating and kitchen equipment.Id. NOTICE OF APPLICATION NOTICE OF SUSPENSION OF PROPOSED EFFECTIVE DATE NOTICE OF INTERVENTION DEADLINE ORDER NO. 37185 1 YOU ARE FURTHER NOTIFIED that the Company and its technical consultant held a workshop with Staff on May 28,2026,regarding revised program assumptions,as the Commission directed in Order No. 37033.Id. at 4. The Company states that Staff raised"[n]o major objections" to the Company's revised estimate methodology.Id. YOU ARE FURTHER NOTIFIED that, after applying the updated assumptions discussed in the workshop, the Company determined that commercial water-heating measures are not cost- effective. Id. at 6. Accordingly, the Company's proposed Rate Schedule EE-GS removes water- heating measures.Id. YOU ARE FURTHER NOTIFIED that the Company then evaluated the remainder of the program while attempting to optimize incentives at levels at or below each offering's estimated incremental cost. Id. at 7. The Company's proposed Rate Schedule EE-GS removes all offerings that did not meet cost effectiveness objectives, except for a 95%AFUE furnace incentive, which, according to the Company, garnered significant customer interest.Id. YOU ARE FURTHER NOTIFIED that while the Company proposes a Rate Schedule EE- GS portfolio that results in program-wide cost-effectiveness forecasts, the Company notes that estimates for individual measures can be sensitive to assumptions, requiring practical market learning and contractor and customer education.Id. at 7-9. YOU ARE FURTHER NOTIFIED that the legislative format of the Company's proposed Rate Schedule EE-GS is included as Exhibit No. 3 to the Application and the clean format is included as Exhibit No. 4. Id. at 9. YOU ARE FURTHER NOTIFIED that the Company's Commercial Energy Efficiency Program is funded by the Energy Efficiency Charge rider on Rate Schedule EEC-GS. Id. at 10. The Company states that the over-collected balance of the rider has reduced from $1,034,285 in December 2024 to $501,409 as of June 30, 2026. Id. According to the Company, its proposed Commercial Energy Efficiency Program has an estimated cost of$103,900 for the first year. Id. The Company will monitor the rider balance and seek to implement adjustments as needed to ensure financial balance.Id. YOU ARE FURTHER NOTIFIED that the Application and supporting documentation have been filed with the Commission and are available for public inspection during regular business hours at the Commission's office. These documents are also available on the NOTICE OF APPLICATION NOTICE OF SUSPENSION OF PROPOSED EFFECTIVE DATE NOTICE OF INTERVENTION DEADLINE ORDER NO. 37185 2 Commission's website at www.puc.idaho.gov. Click on the"NATURAL GAS"icon, select"Open Cases," and click on the case number as shown on the front of this document. YOU ARE FURTHER NOTIFIED that the Commission has jurisdiction over the Company, its filing, and the issues pertaining to this case pursuant to 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 SUSPENSION OF PROPOSED EFFECTIVE DATE YOU ARE FURTHER NOTIFIED that the Company filed its Application on September 9, 2026,proposing an October 1, 2026, effective date. The Commission finds that the Company's proposed effective date does not provide adequate time for Staff, and interested persons, to evaluate the Company's proposal. Pursuant to Idaho Code § 61-622, the Commission suspends the proposed changes for 30 days and five months or until the Commission enters an order accepting, rejecting, or modifying the proposed revisions to Rate Schedule EE-GS. As the Company's requested effective date does not provide the required 30 days' notice under Idaho Code § 61-307, the Commission finds the suspension date effective from 30 days after the Application was filed (October 9, 2026) by operation of Idaho Code § 61-307 and IDAPA 31.01.01.123.01. NOTICE OF INTERVENTION DEADLINE YOU ARE FURTHER NOTIFIED that persons desiring to intervene in this matter to obtain parties' rights of participation must file a Petition to Intervene with the Commission pursuant to this Commission's Rules of Procedure 71-73, IDAPA 31.01.01.071-073. Persons who wish to intervene as a party must file a Petition to Intervene no later than 21 days after the date of service of this Order. Persons desiring to present their views without parties' rights of participation do not have to intervene and may present their comments without prior notification to the Commission or the parties. YOU ARE FURTHER NOTIFIED that the Commission Secretary shall issue a Notice of Parties after the deadline for intervention has passed. The Notice of Parties shall assign exhibit numbers to each party in this proceeding. NOTICE OF APPLICATION NOTICE OF SUSPENSION OF PROPOSED EFFECTIVE DATE NOTICE OF INTERVENTION DEADLINE ORDER NO. 37185 3 YOU ARE FURTHER NOTIFIED that once the Notice of Parties has issued, Staff will informally confer with the parties to discuss a schedule to process this case and other issues as may be raised by the parties. YOU ARE FURTHER NOTIFIED that the following persons are designated as the Company's representatives in this matter: Preston N. Carter Michael Parvinen Givens Pursley LLP Director—Regulatory Affairs 601 W. Bannock St. Intermountain Gas Company Boise, Idaho 83702 Post Office Box 7608 prestoncarter(a),givenspursley.com Boise, Idaho 83707 stephaniew&aivenspursley.com michael.parvinen(kcn cg com igcre ug latory(aint ag s.com ORDER IT IS HEREBY ORDERED that the Company's proposed effective date,which is deemed to be 30 days after the Application was filed by operation of Idaho Code § 61-307 and IDAPA 31.01.01.123.01, is suspended for 30 days plus five months or until the Commission enters an earlier order accepting, rejecting, or modifying the proposed revisions to Rate Schedule EE-GS— General Service Energy Efficiency Rebate Program. IT IS FURTHER ORDERED that persons desiring to intervene in this case for the purpose of obtaining parties' rights of participation must file a Petition to Intervene with the Commission, under Rules 71-73, IDAPA 31.01.01.071-073, no later than 21 days after the service date of this Order. IT IS FURTHER ORDERED that, after the Notice of Parties has issued, Staff will informally confer with the parties to discuss the appropriate scheduling of this case. 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. 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. NOTICE OF APPLICATION NOTICE OF SUSPENSION OF PROPOSED EFFECTIVE DATE NOTICE OF INTERVENTION DEADLINE ORDER NO. 37185 4 DONE by Order of the Idaho Public Utilities Commission at Boise, Idaho this 24th day of September 2026. G EDWARD LODGE, PR IDENT J R. HAMMOND JR., COMMISSIONER DAYN HA IE, COMMISSIONER ATTEST: o i a anchez Commission Secretary 1\Lega1\GAS\INI'G2605_EE-GS\orders\INTG2605_ntc_app_int_sus_j l.docx NOTICE OF APPLICATION NOTICE OF SUSPENSION OF PROPOSED EFFECTIVE DATE NOTICE OF INTERVENTION DEADLINE ORDER NO. 37185 5