Platts to launch weekly, monthly, and quarterly averages for existing daily European Allowances assessments

Platts, part of S&P Global Commodity Insights, will launch weekly, monthly, and quarterly averages for its existing daily EU Emissions Allowance assessments, effective May 1, 2025.

Platts will begin publishing the weekly average on May 2, the monthly average on May 1, and the quarterly average on July 1.

The weekly average will be calculated as the mean of the daily assessments published during any given calendar week. Similarly, the monthly and quarterly averages will be calculated as the mean of the daily assessments published during a given calendar month or quarter, respectively.

The first weekly average will take into account all of the business days of that week. The first monthly average will take into account all of the business days of the month of April. Likewise, the first quarterly average will take into account all of the days of the second quarter of 2025.

For all daily assessments, three values will be calculated: the weekly, monthly, and quarterly averages of the EUA Nearest December, EUA Nearest December +1, and EUA Nearest December +2 assessments, respectively.

This decision comes amid the upcoming implementation of the EU's Carbon Border Adjustment Mechanism (CBAM), which will use the weekly average of EU emissions trading system prices as an input to calculate the price of CBAM certificates in the next few years. Once CBAM is implemented, there is expectation that the quarterly EUA average price will be used as an input in the interim.

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