Platts removes ONEOK WesTex Transmission from Waha natural gas index

Platts, part of S&P Global Commodity Insights, has excluded ONEOK WesTex Transmission (OWT) from the Waha daily (IGBAD00) and monthly (IGBAD03) natural gas index methodology.

The exclusion of OWT trades from the Waha monthly index has taken effect for month-ahead trades during April bidweek (March 25-27, 2025) for delivery April 1-30, 2025.

For the daily index, the changes will take effect for next-day trading on March 31, 2025, for delivery April 1, 2025.

Platts started a formal review of its Waha natural gas index methodology by inviting feedback to a consultation(opens in a new tab) on Aug. 21, 2024. As a result of market feedback and engagement, Platts published a proposal(opens in a new tab) to exclude OWT on Feb. 11, 2025.

The decision(opens in a new tab) to remove OWT was based on our analysis that it consistently trades differently to other locations mapped to the Waha index and was reflected in significant market feedback that it should be removed to maintain the integrity of the Waha index.

Please send any questions or comments to AmericasGasPricing@spglobal.com and pricegroup@spglobal.com. Feedback not marked as confidential may be made available for public viewing upon request.