Energy Transition, Emissions
June 01, 2026
Description and UOM updated for CCO current-month symbols
HIGHLIGHTS
The following CCO current-month symbols have had their description and UOM updated, as summarized below.
From:
| MDC | Symbol | Bates | Dec | Freq | Curr | UOM | Description |
| ES | ARJAJ00 | lhc | 3 | DW | USD | MT | CCO Current Month Strip Current Year Vintage |
| ES | ARJAJ03 | c | 3 | MA | USD | MT | CCO Current Month Strip Current Year Vintage MAvg |
| ACM | MRJAJ00 | lhc | 3 | DW | USD | MT | CCO Current Month Strip Current Year Vintage (Mirror) |
To:
| MDC | Symbol | Bates | Dec | Freq | Curr | UOM | Description |
| ES | ARJAJ00 | lhc | 3 | DW | USD | MTC | Platts CCO $/mtc |
| ES | ARJAJ03 | c | 3 | MA | USD | MTC | Platts CCO $/mtc MAvg |
| ACM | MRJAJ00 | lhc | 3 | DW | USD | MTC | Platts CCO $/mtc (Mirror) |
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.