Platts to launch new Transco, station 45 natural gas index

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

Platts will also leave the existing Transco, zone 2 methodology unchanged.

The new daily and monthly Transco, station 45 index location will be defined as follows: Transactions at Transcontinental Gas Pipe Line's Zone 2 Station 45 pooling point in Beauregard Parish, Louisiana.

A capacity constraint on Transco has led to pricing disparities between trades done at Station 45 and trades done farther upstream within Zone 2. Market feedback and internal analysis support the launch of a new index that reflects trades done solely at Station 45.

With the new Transco, station 45 index, Platts will no longer exclude discounted non-Station 45 trades from the Transco, zone 2 index, but will continue to screen for outliers and apply editorial discretion. Trades at Station 45 will continue to be included in the Transco, zone 2 index methodology.

This decision follows a methodology proposal published July 28, 2025, linked here

For the daily market, the changes will take effect for next-day trades on Sept. 30 for Oct. 1 delivery. For the monthly market, the changes will take effect for trades done during October bidweek, which begins Sept. 24.

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

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.