Platts proposes to change Platts CAC basket composition, Sept. 1

Platts, part of S&P Global Energy, proposes to change the composition of its Platts CAC basket assessment, effective Sept. 1, 2026.

Platts CAC reflects the most competitive of a number of Platts carbon price assessments, reflecting credits from projects that reduce or avoid carbon emissions.

This proposed change reflects evolving market considerations around the floor price for avoidance credits, as well as Platts observations around price convergence between credit types.

Effective Sept. 1, Platts CAC Current Year and Yr01 would reflect the most competitive of the following assessments:

As a result, Platts Nature-Based Avoidance Southeast Asia and Platts Nature-Based Avoidance South America would no longer be included in the Platts CAC basket from this date. The last day reflecting these assessments in the Platts CAC basket would be Aug. 31, 2026.

These daily assessments are published in Carbon Markets Daily and S&P Global Energy Core in the service lines ETA and CMA.

Further details on Platts' carbon assessment specifications can be found here.

Please send any feedback, questions, and comments regarding this proposal to platts_carbon@spglobal.com and pricegroup@spglobal.com by July 24, 2026.

For those providing written comments, please indicate clearly if your comments are not intended for publication by Platts for public viewing. Platts will consider all comments received, and comments not marked as confidential will be made available upon request.