UTC Case Docket Details

Docket Number 260438

Case Docket Details Table
Docket Number UG-260438
Advice
Company Avista Corporation
DBA Avista Utilities
Filing Type Tariff Revision
Industry (Code) Natural Gas (150)
Status Closed
Lead Staff Koenig, Paul (UTC)
Filed Date 05/29/2026
Effective Date 08/01/2026
Summary Revises Tariff No. WN U-29 for approval of a proposed increase in rates and charges in Schedule 191. The estimated annual revenue change associated with this filing is an increase of approximately $6.3 million, or an increase of 2.4% in overall billed rates to be effective August 1, 2026. The proposed rate will have an average monthly bill impact to residential natural gas customers (using 61 therms) of $2.41, or 2.6%, to their bill. The proposed rate change will vary based on a customer’s usage and service schedule.

Event History

  • 07/30/2026 -- Allowed (The Commissioners took no action, thereby allowing revisions to Tariff WN U-29 filed by Avista in Docket UG-260438 on May 29, 2026, to become effective August 1, 2026, by operation of law.)
  • 07/31/2026 -- Closed
  • 07/30/2026 -- Open Meeting
  • 05/29/2026 -- Pending
  • 05/29/2026 -- Open