PUBLIC NOTICE - - - NOTICE Notice is hereby given, pursuant to article IV, section 21(D)(1) of the Louisiana Constitution, that on October 1, 2025, Delta North Louisiana Gas Company, LLC (“Delta North”), a natural gas public utility having facilities to permit the local distribution of natural gas to residential and commercial customers in the parishes listed below, filed with the Louisiana Public Service Commission (“LPSC”) its Evaluation Report pursuant to its Gas Operation Rate Stabilization Plan (“RSP”) Rider for the test year ended June 30, 2025 (“TY 2025”), in accordance with LPSC Order No. U-37346. Delta North’s Gas Operations RSP filing, if approved by the LPSC as filed, will result in a rate increase of approximately $6.3 million annually inclusive of impacts due to the Tax Cuts and Jobs Act (“TCJA”), effective as of December 30, 2025. Affected Parishes: Bienville, Bossier, Caddo, Claiborne, De Soto, Jackson, Lincoln, Ouachita, Union, and Webster Delta North’s RSP filing for the 2025 Test Year reflects an Earned Return on Equity (“EROE”) of 6.50% and pursuant to the RSP’s cost of service sharing mechanism, the EROE requires a rate adjustment by Delta North. It is estimated that the requested net rate increase will have the following effect on average monthly bills: a Residential customer using 39 CCF will increase approximately $3.08; a Small Commercial-Firm Service customer using 225 CCF will increase approximately $17.75. The Company’s filing and its attachments may be viewed in the Records Division of the LPSC at the following address: Records Division 602 N. 5th Street, 12th Floor Baton Rouge, Louisiana 70802 Telephone: (225) 342-3157 Toll Free (800) 256-2397 DELTA NORTH LOUISIANA GAS COMPANY, LLC 161419-OCT 7-1T $250