Platts launches new Transco, station 45 natural gas index

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

Platts has also left the existing Transco, zone 2 methodology unchanged.

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

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 announcement follows the Aug. 22 methodology change decision found here: https://www.spglobal.com/commodity-insights/en/pricing-benchmarks/our-methodology/subscriber-notes/082225-platts-to-launch-new-transco-station-45-natural-gas-index .

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

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.