Tariff Filings

Executive Summary – On August 31, 2026, Northern made a tariff filing to update, remove and add negotiated rate agreements to be effective September 1, 2026.

Executive Summary – On August 27, 2026, Northern made a tariff filing to remove a non-conforming agreement to be effective September 28, 2026.

Executive Summary – On August 17, 2026, Northern made a tariff filing to incorporate into Northern’s Tariff the North American Energy Standards Board Version 4.0 revisions of the business practice standards to be effective January 1, 2027.

Executive Summary – On August 12, 2026, Northern made a tariff filing pursuant to Section 29.3.B. of the General Terms and Conditions of the Tariff to reflect the reallocation of Carlton Sourcers’ flow obligation for the 2026/2027 heating season to be effective November 1, 2026.

Executive Summary – On August 11, 2026, Northern made a tariff filing to revise the URL link to Northern’s website for the system maps referenced in Northern’s tariff. The proposed revisions are required as a result of Northern’s recent migration to a new web platform.

Executive Summary – On August 5, 2026, Northern made a tariff filing to add and update negotiated rate agreements to be effective August 6, 2026.

Executive Summary – On July 31, 2026, Northern made a tariff filing to add a new negotiated rate agreement to be effective August 2, 2026.

Executive Summary – On July 31, 2026, Northern made a tariff filing to update and add negotiated rate agreements to be effective August 1, 2026.

Executive Summary – On June 30, 2026, Northern made a tariff filing to update, add and remove negotiated rate agreements to be effective July 1, 2026.

Executive Summary – On June 1, 2026, Northern submitted its annual report setting forth the Carlton Resolution buyout, surcharge and penalty dollars reimbursed to the Carlton Sourcers on their May reservation invoices for the 2025-2026 heating season.

Executive Summary – On May 29, 2026, Northern made a tariff filing to add, remove and update negotiated rate agreements to be effective June 1, 2026.

Executive Summary – On May 20, 2026, Northern made a tariff filing to add and remove negotiated rate agreements to be effective May 21, 2026.

On April 30, 2026, Northern made a tariff filing to add, remove and update negotiated rate agreements to be effective May 1, 2026.

Executive Summary – On April 30, 2026, Northern filed its annual report of its Operational Purchases and Sales of Gas for the twelve-month period ended December 31, 2025.

Executive Summary – On March 31, 2026, Northern made a tariff filing to remove, add and update negotiated rate agreements to be effective April 1, 2026.

Executive Summary – On March 18, 2026, Northern made a tariff filing to update a negotiated rate agreement to be effective March 19, 2026.

Executive Summary – On March 17, 2026, Northern submitted to the Federal Energy Regulatory Commission a Stipulation and Agreement of Settlement in Northern’s rate case at Docket No. RP25-989-007.