The European Union’s carbon market will see a reduction in permit auctions over the coming year after a persistent surplus of emissions allowances triggered an automatic intervention under the bloc’s market stabilization mechanism, according to an announcement made at the end of last week.
The European Commission said the total number of allowances in circulation, or TNAC, under the EU Emissions Trading System (EU ETS) reached 1.02 billion in 2025, remaining above the threshold that requires excess permits to be withdrawn from the market.
The figure serves as the key benchmark for operating the Market Stability Reserve (MSR), a tool designed to prevent oversupply from weakening carbon prices.
As a result, 190.5 million emissions allowances will be transferred into the reserve between September 2026 and August 2027.
The move is expected to reduce the number of permits available through public auctions, with updated auction schedules due to be published around July.
The EU ETS, the world’s largest carbon market, requires power producers, manufacturers and other covered industries to surrender allowances corresponding to their carbon emissions.
By limiting permit supply, policymakers seek to maintain a meaningful carbon price and encourage investment in lower-emission technologies.
The MRS was established to address large imbalances between permit supply and demand. When surplus allowances exceed specified levels, permits are removed from circulation and placed in the reserve. Conversely, allowances can be released if the market faces shortages.
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The Commission said the reserve held 400 million allowances at the start of 2026. Under current rules, permits held above that level are automatically invalidated.
However, Brussels proposed changes in April that would end the automatic cancellation mechanism, potentially preserving more allowances within the system as policymakers seek to improve market stability and limit price volatility.
The latest adjustment underscores the growing role of market management tools as European officials balance climate ambitions with concerns about industrial competitiveness and energy costs.
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