Platts amends El Paso, South Mainline daily natural gas index methodology

Platts, part of S&P Global Energy, has changed its El Paso, South Mainline natural gas daily index methodology to include all locations on the South Mainline west of Cornudas station, excluding Ehrenberg. The changes took effect with day-ahead trading on Jan. 30, for delivery Feb. 1-2.

This change aligns the methodology with Platts' treatment of these trades, and follows a decision published Dec. 24, 2025.

The new methodology definition is: Deliveries on El Paso's south mainline west of the Cornudas station in West Texas, but not including Ehrenberg, AZ.

Please contact AmericasGasPricing@spglobal.com with any questions or comments.

For written comments, please clearly indicate if any portion is not intended for publication by Platts for public viewing. Platts will consider all comments received and will make comments not marked as confidential available upon request.