EU ETS mechanism to increase CO2 allowance invalidation threshold from 400 to 650 million units
Executive summary: The European Parliament intends to raise the threshold for the invalidation of excess CO2 allowances in the ETS from 400 million to 650 million starting in 2027. This adjustment seeks to stabilize the carbon market by providing more flexibility and preventing extreme volatility caused by supply-demand mismatches.
Who is involved: European Parliament, EU carbon market participants, and industrial emitters.
Likely next: Formal legislative approval and integration into the revised ETS framework for the 2027 period.
The European Parliament is proposing a significant adjustment to the EU Emissions Trading System (ETS) by raising the threshold for the invalidation of excess allowances. This move aims to introduce greater market flexibility and mitigate supply-demand imbalances. If implemented, the change will trigger from 2027, allowing a larger buffer of surplus credits to remain in the system before automatic cancellation occurs.
What's next — scenarios
Base: Threshold increase implemented (60%)
Increased market liquidity and potentially lower CO2 price volatility as the buffer grows.
- Final legislative vote in the EU Parliament
- Agreement between EU institutions
Downside: Threshold remains low (25%)
Higher risk of sudden price spikes due to rapid removal of excess supply from the market.
- Stronger push from climate advocacy groups for stricter supply control
Upside: Higher threshold plus increased auction volume (15%)
Significant downward pressure on carbon prices, benefiting heavy emitters but slowing decarbonization incentives.
- Economic recession lowering industrial demand for allowances
What to watch
- Final text of the EU ETS revision (2026-2027)
- EUA (European Union Allowance) future prices for December 2026
- EU Commission's guidance on market stability reserve (MSR) mechanics
Timeline
- — Ets, più quote CO2 nella riserva: la soglia sale da 400 a 650 milioni (la Repubblica — Economia)
- — CO2, come funziona il mercato e perché il prezzo è tornato a salire (Il Sole 24 Ore — Economia)
- — IA : les centres de données émettent bien plus de CO2 qu'estimé, conclut une étude (Le Figaro — Économie)
Analysis — what this means
Likely next events
- Implementation of the new 650 million threshold in 2027
Sectors affected
- Energy utilities
- Heavy industry (steel, cement)
- Aviation
- Carbon credit trading firms
Regulatory implications
- Adjustment of the Market Stability Reserve (MSR) rules under the EU ETS framework
Historical parallels
- Introduction of the EU ETS market mechanism (2005)
- Previous adjustments to the Market Stability Reserve to manage surplus (various years)
Key entities
Sources
- Ets, più quote CO2 nella riserva: la soglia sale da 400 a 650 milioni — la Repubblica — Economia
- CO2, come funziona il mercato e perché il prezzo è tornato a salire — Il Sole 24 Ore — Economia
- IA : les centres de données émettent bien plus de CO2 qu'estimé, conclut une étude — Le Figaro — Économie
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