Docket No:  ADV 1840 Docket Name:  NW NATURAL ADVICE NO. 26-01 AR 671 COMPLIANCE Submit Public Comment Subject Company:  NORTHWEST NATURAL     NW Natural's Advice No. 26-01. The purpose of this filing is to update certain pages of NW Natural’s tariff to reflect the changes and updates made to Oregon Administrative Rules (OAR) Chapter 860, Division 21 approved by the Public Utility Commission of... Filing Date:  2/2/2026 Advice No: 26-01       Effective:  3/18/2026 Expiration:   Status:  PENDING Case Manager:  CHARLES LOCKWOOD Phone:  503-559-7752 Email:   charles.lockwood@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: 2/2/2026 Action:  INITIAL UTILITY FILING      Description NW Natural's Advice No. 26-01. The purpose of this filing is to update certain pages of NW Natural’s tariff to reflect the changes and updates made to Oregon Administrative Rules (OAR) Chapter 860, Division 21 approved by the Public Utility Commission of Oregon through Order No. 25-543 on December 31, 2025, in docket AR 671.