Platts changes CAC basket composition, Sept. 1

Platts, part of S&P Global Energy, has changed the composition of its CAC basket assessments, 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 change follows a proposal note published July 14, 2026, and a decision note published July 31, 2026.

This change reflects evolving market considerations around the floor price for avoidance credits, as well as Platts observations around price convergence between certain avoidance credit types. As such, Platts has revised the composition of its CAC basket assessments.

Effective Sept. 1, 2026, Platts CAC Current Year and Yr01 reflect the most competitive of the following assessments:

Platts CAC Current Year (ACACA00):

Assessment Name	Symbol
Platts Methane Management $/mtCO2e Current Year	AMECA00
Platts Household Devices $/mtCO2e Current Year	CNHDD00
Platts Industrial Pollutants $/mtCO2e Current Year	APOLA00

Platts CAC Yr01 (ACACB00):

Assessment Name	Symbol
Platts Methane Management $/mtCO2e Yr01	AMECB00
Platts Household Devices $/mtCO2e Yr01	AHDVA00
Platts Industrial Pollutants $/mtCO2e Yr01	APOLB00

As part of this change, Platts Nature-Based Avoidance Southeast Asia and Platts Nature-Based Avoidance South America are no longer included in the CAC basket.

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

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

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