Platts to amend El Paso, South Mainline daily natural gas index methodology

Platts, part of S&P Global Energy, will change its El Paso, South Mainline natural gas daily index methodology to include all locations on the South Mainline west of Cornudas station, excluding Ehrenberg.

This change will align the methodology with Platts' treatment of these trades, and follows a proposal published Dec. 9, 2025.

The current methodology definition is: Deliveries on El Paso's south mainline at points between Cornudas station in West Texas, to but not including Ehrenberg, AZ.

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

These changes will take effect on trade date Jan. 30, 2026, for delivery Feb. 1-2, 2026.

Please submit any questions or comments to AmericasGasPricing@spglobal.com and pricegroup@spglobal.com.

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.