On 1 April 2026, the European Commission proposed a targeted amendment to the EU Emissions Trading System's (EU ETS) Market Stability Reserve (MSR) Decision. The proposal would halt the existing automatic cancellation mechanism, under which all allowances in the reserve above 400 million units are permanently invalidated. Instead, these excess allowances would be retained as a strategic price-stability buffer that regulators can draw on during periods of market stress.
The Market Stability Reserve was created in 2019 to address the structural over-supply of allowances that had suppressed EU ETS prices for years. It works by withdrawing allowances from the market when total circulating supply is high, and releasing them when supply is tight. The current invalidation rule was designed to prevent the reserve from becoming an endless stockpile — but it also permanently destroys supply, which some argue risks destabilising the market at the opposite end in future phases.
The Commission's April 2026 proposal follows a direct mandate from President von der Leyen at the March European Council, where political leaders called for EU ETS reform amid concerns about energy-price pressure on households and industrial competitiveness.
Under the proposed amendment, allowances above the 400-million threshold would no longer be cancelled. They would instead be kept inside the reserve as a discretionary buffer. The Commission argues this enhances the ETS's resilience to volatility — particularly relevant as ETS2 (covering buildings and road transport) is scheduled to launch in 2027 and could face significant price swings during its initial phase.
Key implication: Stopping invalidation means the long-term supply of EU ETS allowances is larger than previously assumed. This has a modestly bearish effect on forward ETS price projections — but the Commission frames the trade-off as worth it for market stability and investor confidence in the clean energy transition.
The proposal must pass through the ordinary legislative procedure (co-decision), requiring approval from both the European Parliament and the Council of the EU. This process typically takes 12–18 months, though fast-track procedures are possible under political urgency. A comprehensive review of the EU ETS — covering the full MSR design, the linear reduction factor, and ETS2 interaction — is planned for July 2026.
The MSR amendment is a politically driven intervention designed to balance climate ambition with near-term economic pressure. For compliance entities holding EUA positions, the signal is clear: the EU is willing to adjust market mechanics to prevent price spikes, which limits the upside in crisis scenarios but also provides a floor during downturns.
For corporate buyers using ETS pricing as a reference for internal carbon prices or Article 6 valuations, this structural change warrants a reassessment of long-term price assumptions. TrustVal recommends monitoring the July 2026 comprehensive review closely — it will set the EU carbon market architecture for the 2030s.
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