Platts changes timestamps for Voluntary Carbon Market price assessments

Platts, part of S&P Global Commodity Insights, has changed the timestamps for its daily Voluntary Carbon Market (VCM) price assessments, effective June 2, 2025.

Platts has shifted all assessments from a single global timestamp of 12:00 GMT to one of three, most relevant regional timestamps:

• 17:30 Singapore Time
• 16:30 London Time
• 14:30 Eastern Standard Time

These changes are intended to align the VCM Market on Close assessment period with the most relevant regional timestamp, to better reflect geographic differences in market activity for all carbon market segments.

Previously, all Platts VCM assessments reflected market value at a 12:00 GMT close. To better capture the concentration of liquidity at particular times of day for these increasingly regional markets, however, Platts has changed its assessment timestamps and holiday calendars as follows:

For further details of Platts publishing calendars, please see the Platts Pricing Holiday Schedule here.

These changes follow a proposal and feedback period, details of which can be found here, as well as a decision note, which can be found at the subscriber note linked here.

In addition, Platts has renamed some of its Voluntary Carbon Credit assessments, effective June 2, 2025. This affects several of the assessments outlined above, details of which are available here.

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

For written comments, please provide a clear indication if 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.