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Home My WebLink About20260612Amended Tariff Sheets - 90B and 90D.pdf I ,1 RECEIVED June 12, 2026 Avista Corp. IDAHO PUBLIC 1411 East Mission Ave., P.O. Box 3727 UTILITIES COMMISSION Spokane, WA 99220-0500 Telephone: 509-489-0500 Toll Free: 800-227-9187 June 12, 2026 Commission Secretary Idaho Public Utilities Commission 11331 W. Chinden Blvd Building 8, Suite 201-A Boise, ID 83714 Re: Case No. AVU-TAE-26-03—Avista Utilities Substitute Tariff Sheets, Schedule 90 Dear Commission Secretary: On June 1, 2026, Avista Corporation, dba Avista Utilities (Avista or the Company) filed with the Idaho Public Utilities Commission (Commission) proposed tariff revisions to its electric tariff sheets, I.P.U.C. No. 28, to incorporate the mention of demand response (DR) programs and/or services within the Company's tariff Schedules 90 and 91. Upon review of the Company's filing, Commission Staff identified two typographical errors as well as a provision that, as stated, appeared inconsistent with the Company's intended revisions. Avista has corrected these inaccuracies and is requesting replacement of the previously filed Sheets 90B and 90D with the substitute sheets attached. If you have any questions regarding this filing,please contact me at(509) 495-7839 or j aime.stpeter(ae,avi stacorp.com. Sincerely, /j,/ �4� st ;VC&T Jaime St Peter Regulatory Affairs Manager Substitute Seventh Revision Sheet 90B Canceling 90B I.P.U.C. No.28 Sixth Revision Sheet 90B AVISTA CORPORATION d/b/a Avista Utilities SCHEDULE 90 — continued 5. INCENTIVES AND NONMONETARY ASSISTANCE a. FUNDING The Company shall offer incentives for projects based upon the incremental capital cost associated with the energy efficiency of the project, with energy savings calculated using the current energy rates. Incentives will be paid up to a maximum of the incremental measure cost, in accordance with the following provisions: i. The Company will make adjustments, if necessary, to the percent of incremental cost paid to attempt to obtain the greatest energy savings at the lowest cost. ii. Fuel-conversion incentives are available only for conversion to natural gas with an end-use efficiency of 44% or greater. iii. Low-income measures provided through energy efficiency programs delivered by Community Action Agencies (CAAs)—contracted by the Company to serve limited income or vulnerable customer segments, including CAA administration costs and health and human safety measures — that have a TRC of 1.0 or higher, are incentivized at 100% of the project cost. For measures that have a TRC of less than 1, the project is incentivized at an amount equal to the present value of avoided cost. The Company will actively pursue electric efficiency or demand response opportunities that may not fit within the prescribed Programs described in this tariff. In these circumstances, the Customer and the Company will enter into a site- specific (efficiency Programs) or bi-lateral (demand response) service agreement. Issued June 12, 2026 Effective July 1, 2026 Issued by Avista Utilities By Patrick Ehrbar, Director of Regulatory Affairs Substitute Sixth Revision Sheet 90D Canceling 90D I.P.U.C. No.28 Fifth Revision Sheet 90D AVISTA CORPORATION d/b/a Avista Utilities SCHEDULE 90 - continued 5. BUDGET AND REPORTING Surcharges levied within Schedule 91 will be used to fund the electric efficiency programs defined within this tariff as well as the administrative costs expended in support of electric energy efficiency and demand response programs. The Company will manage these programs to obtain resources that are cost- effective from a UCT perspective and achievable through utility intervention. Schedule 91 will be periodically reviewed and revised as necessary to provide adequate funding for electric efficiency efforts. 6. GENERAL RULES AND PROVISIONS Service under this schedule is subject to the General Rules and Provisions contained in this tariff and is limited to facilities receiving electric service from the Company. All installations and equipment must comply with all local code and permit requirements applicable and be properly inspected, if required, by appropriate agencies. The Company may establish specifications regarding any electric efficiency measures and modifications to be effected under this schedule and may conduct inspections to insure that such specifications are met. Issued June 12, 2026 Effective July 1, 2026 Issued by Avista Utilities By Patrick Ehrbar, Director of Regulatory Affairs Substitute Seventh Revision Sheet 90B Canceling 90B I.P.U.C. No.28 Sixth Revision Sheet 90B AVISTA CORPORATION d/b/a Avista Utilities SCHEDULE 90 — continued 5. INCENTIVES AND NONMONETARY ASSISTANCE a. FUNDING The Company shall offer incentives for projects based upon the incremental capital cost associated with the energy efficiency of the project, with energy savings calculated using the current energy rates. Incentives will be paid up to a maximum of the incremental measure cost, in accordance with the following provisions: i. The Company will make adjustments, if necessary, to the percent of incremental cost paid to attempt to obtain the greatest energy savings at the lowest cost. ii. Fuel-conversion incentives are available only for conversion to natural gas with an end-use efficiency of 44% or greater. iii. Low-income measures provided through energy efficiency programs delivered by Community Action Agencies (CAAs)—contracted by the Company to serve limited income or vulnerable customer segments, including CAA administration costs and health and human safety measures — that have a TRC of 1.0 or higher, are incentivized at 100% of the project cost. For measures that have a TRC of less than 1, the project is incentivized at an amount equal to the present value of avoided cost. i V. inGen s f�aomand response programs shall be allowed with a GaIGUIated value based on oPont G ed ilo or ether pnTlifnGhIlo fa GtorC Funding coUrnoc for incentives may innli Arlo external coi irnoc GUGh as gronto or the DSM Roder, to the exTon�SGribed within this cashed ilo vcnca-aT� The Company will actively pursue electric efficiency or demand response opportunities that may not fit within the prescribed Programs described in this tariff. In these circumstances, the Customer and the Company will enter into a site- specific (efficiency Programs) or bi-lateral (demand response) service agreement. Issued June 12, 2026 Effective July 1, 2026 Issued by Avista Utilities By Patrick Ehrbar, Director of Regulatory Affairs Substitute Sixth Revision Sheet 90D Canceling 90D I.P.U.C. No.28 Fifth Revision Sheet 90D AVISTA CORPORATION d/b/a Avista Utilities SCHEDULE 90 - continued 5. BUDGET AND REPORTING Surcharges levied within Schedule 91 will be used to fund the electric efficiency programs defined within this tariff as well as the administrative costs expended in support of electric energy efficiency and demand response programs. The Company will manage these programs to obtain resources that are cost- effective from a UTC UCT perspective and achievable through utility intervention. Schedule 91 will be periodically reviewed and revised as necessary to provide adequate funding for electric efficiency efforts. 6. GENERAL RULES AND PROVISIONS Service under this schedule is subject to the General Rules and Provisions contained in this tariff and is limited to facilities receiving electric service from the Company. All installations and equipment must comply with all local code and permit requirements applicable and be properly inspected, if required, by appropriate agencies. The Company may establish specifications regarding any electric efficiency measures and modifications to be effected under this schedule and may conduct inspections to insure that such specifications are met. Issued June 12, 2026 Effective July 1, 2026 Issued by Avista Utilities By Patrick Ehrbar, Director of Regulatory Affairs P&J- rD.