Energy Transition, Emissions

June 01, 2026

New California carbon offset (CCO) symbols

The following California carbon offset (CCO) symbols have been created in the ACM (Compliance Markets) Market Data category. They will appear on the following:

Publications: Carbon Market Daily, Megawatt Daily and Platts Energy Trader

Fixed Pages: Platts Americas Gas and Power Alert page AGP2754, Platts Electricity Alert page PEA0754, Platts Energy Transition Alert page ETA2021, EVA3006 and CMA2021.

They are scheduled to begin updating on June 1, 2026.

MDC Symbol Bates Dec Freq Curr UOM Description
ACM PCCOD00 c 3 DW USD MTC Platts CCO DEBS $/mtc
ACM PCCOD03 c 3 MA USD MTC Platts CCO DEBS $/mtc MAvg

Please follow the link below for further details:

https://www.spglobal.com/energy/en/pricing-benchmarks/our-methodology/subscriber-notes/031326-platts-will-launch-additional-california-carbon-offset-assessment-update-name-specifications-for-existing-cco-current-month-assessment-june-1

If you have any comments or questions about this announcement, please contact S&P Global Energy Support team or email support.energy@spglobal.com