Docket No:  UG 529 Docket Name:  AVISTA ADVICE NO. 26-02-G 2026 PGAS Submit Public Comment Subject Company:  AVISTA UTILITIES     In the Matter of AVISTA CORPORATION dba AVISTA UTILITIES, 2026 Annual Natural Gas Cost Adjustment Filing. Filed by Athena Allen. Copies served to Gas List. Filing Date:   Advice No: 26-02-G       Effective:  10/31/2026 Expiration:   Status:  PENDING Case Manager:  ANNA KIM Phone:  971-239-2887 Email:   anna.kim@puc.oregon.gov Staff Contact:  ZHUOYI ZHAO Phone:   Email:   zhuoyi.zhao@puc.oregon.gov Email Service List (semi-colon delimited)      Email Service List (comma delimited)   If you experience problems with the above 'Email Service List' links, please try one of these: Service List Popup (semi-colon delimited)     Service List Popup (comma delimited) General information about Tariff Filings.

ACTIONS SERVICE LIST SCHEDULE Public Comments Sort By Date        Sort By Type Date: 9/15/2026 Action:  PETITION TO INTERVENE      Description AWEC's Petition to Intervene, with contacts of Chad Stokes and Elise Koepke. Filed by Chad Stokes.   Date: 9/11/2026 Action:  REPLACEMENT SHEETS, ADDITIONAL MATERIAL      Description Avista's Supplemental Filing of Advice No. 26-02-G. The Company has updated commodity costs to reflect index purchases based on 60-day basin-weighted average prices and executed hedges as of August 31, 2026. Supplemental Tariff Sheets 461 and 461A reflect these updates. This filing also include Newspaper Advertisement Draft and PGA Summary Sheet. Confidential saved to Agency Folder.   Date: 8/18/2026 Action:  HUDDLE REQUEST      Description CUB's Request for Huddle Access, filed by Lizzie Lesch-Abhaya.   Date: 8/18/2026 Action:  GPO SIGNATORY PAGE      Description CUB's Signatory Page related to General Protective Order No. 23-132, filed by Claire Valentine-Fossum. Persons qualified under Paragraph 10: Claire Valentine-Fossum, Bob Jenks, Jennifer Hill-Hart, Sarah Wochele, Ryan Tran, Sharif Morton, Emily Dougan, and Lizzie Lesch-Abhaya.   Date: 8/18/2026 Action:  CUB NOTICE OF INTERVENTION      Description CUB's Notice of Intervention, with contacts of Claire Valentine-Fossum, Bob Jenks, and Emily Dougan. Filed by Claire Valentine-Fossum.   Date: 8/5/2026 Action:  SERVICE LIST CHANGE      Description CUB's Request to update Service List to add Bob Jenks, Emily Dougan, Lizzie Lesch-Abhaya as Interested Parties; filed by Lizzie Lesch-Abhaya.   Date: 7/31/2026 Action:  GPO SIGNATORY PAGE      Description Avista's List of Signatories related to General Protective Order No. 23-132. Persons qualified thereunder: Pat Ehrbar, Shawn Bonfield, Joe Miller, Marcus Garbarino, and Athena Allen. See 7/31/26 Notice.   Date: 7/31/2026 Action:  NOTICE      Description Avista's Notice of Use of General Protective Order No. 23-132. Filed by Athena Allen.   Date: 7/31/2026 Action:  INITIAL UTILITY FILING      Description In the Matter of AVISTA CORPORATION dba AVISTA UTILITIES, 2026 Annual Natural Gas Cost Adjustment Filing. Filed by Athena Allen. Copies served to Gas List.