Platts proposes to launch Transco, station 45 natural gas index

Platts, part of S&P Global Commodity Insights, proposes to launch a new Transco, station 45 daily and monthly natural gas index effective Oct. 1, 2025.

The new Transco, station 45 index location would be defined as follows: Transactions at Transcontinental Gas Pipe Line's Zone 2 Station 45 Pooling Point in Beauregard Parish, Louisiana.

The methodology for the Transco, zone 2 (IGBBU00) index location would remain unchanged, and Station 45 trades would continue to be included in the Transco, zone 2 index.

This proposal follows a market consultation and review announced in May, which can be found here, and it is similar to Platts methodology changes in Transco Zone 3, described here.

Market feedback and analysis support the launch of a new index to reflect trades done solely at Station 45, as a capacity constraint has led to pricing disparities between trades done at Station 45 and trades done farther upstream within Zone 2.

Platts has been excluding some Zone 2 trades from its Transco, zone 2 price index due to significantly lower pricing than trades done at Station 45. Upon the launch of the new Transco, station 45 index, Platts would no longer exclude those discounted trades from the Transco, zone 2 index, while still applying editorial judgment.

The table below demonstrates what the price difference would have been had the anomalous trades been included in the Transco, zone 2 index.

Please send questions or comments to AmericasGasPricing@spglobal.com and pricegroup@spglobal.com by Aug. 15.

For written comments, please provide a clear indication if comments are 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.