Platts discontinues California Carbon Offset Next Month, Next December contract assessments, June 1

Platts, part of S&P Global Energy, has discontinued its California Carbon Offset Next Month and Next December future contract assessments, effective June 1, 2026.

This follows a proposal published on Feb. 23 and a decision note published March 13.

This discontinuation reflects a lack of market activity for forward delivery of CCO offset contracts within the California compliance scheme.

The last publication date for the CCO Next Month and Next December contracts was May 29, 2026.

The symbols that have been discontinued are as follows:

The CCO Current Month strip assessment (ARJAJ00) and its corresponding monthly average (ARJAJ03) are unaffected by this change, but Platts has updated their names to Platts CCO and Platts CCO MAvg, respectively.

The discontinued assessments appeared in Carbon Markets Daily, Megawatt Daily, and Energy Trader, as well as fixed pages PEA0754, AGP2754, CMA2021, ETA2021 and EVA3006.

Details regarding the methodology for Platts Carbon assessments can be found here.

Please send all comments, feedback, and questions to platts_carbon@spglobal.com and pricegroup@spglobal.com.

For 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 will make comments not marked as confidential available upon request.