European carbon allowances fell during the week ending Feb. 28, largely tracking the gas complex and further curtailments in net length from investors.

But prices did not react strongly to the news that the European Commission is looking to alter the timeline for the sale of carbon pricing certificates under its Carbon Border Adjustment Mechanism and move to a mass-based threshold to make the levy more effective and less bureaucratic.

EU Allowances for December 2025 were trading at Eur72.26/mtCO2e ($75.19/mtCO2e) at 1245 GMT Feb. 28, down around 4% since the previous week, according to Intercontinental Exchange data. Platts, part of S&P Global Commodity Insights, assessed the EUA nearest December 2025 contract at Eur72.72/mtCO2e on Feb.27.

The Dutch TTF gas front-month contract, which was down most of the week, however, rallied on Feb. 27, driven by lower wind generation and concerns surrounding storage levels across the EU, supporting EUA prices as well.