Docket No:  ADV 1818 Docket Name:  AVISTA ADVICE NO. 25-12-G UM 779 COMPLIANCE Submit Public Comment Subject Company:  AVISTA UTILITIES     Avista's Advice No. 25-12-G. The purpose of the requested tariff modifications is to reflect the annual customer deposit interest rate of 3.5 percent for calendar year 2026. This filing includes a Less Than Statutory Notice (LSN). Filing Date:  12/2/2025 Advice No: 25-12-G       Effective:  1/1/2026 Expiration:   Status:  PENDING Case Manager:  MADISON BOLTON Phone:  503-508-0722 Email:   madison.bolton@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)

ACTIONS SERVICE LIST SCHEDULE Public Comments Date/Time Event Description 1/1/2026 EFFECTIVE DATE/ STATUTORY DEADLINE