MEPs clash over ETS stability ahead of today's Market Stability Reserve vote: what the rift means for carbon price planning

Centrist parties in the European Parliament called for stability in the revision of the EU Emissions Trading System and clashed fiercely with carbon market sceptic lawmakers during a debate in Strasbourg on Monday evening, Carbon Pulse reported. The exchange came at the start of a plenary week in which Parliament is due to endorse several climate files, including its negotiating mandate on the Market Stability Reserve and an update to the carbon border adjustment mechanism. The immediate test is today's vote on the reserve.

The substance is narrower than the rhetoric. On 17 July the Commission proposed to stop invalidating allowances held in the reserve above its 400 million threshold and to halve the intake rate from 24 to 12 percent, arguing the reserve is now large enough. On 10 September the environment committee rejected the end of invalidation by 62 votes to 8 and instead proposed keeping the cancellation mechanism but lifting the threshold from 400 million to 650 million allowances from 1 March 2027. If plenary confirms that mandate today, Parliament will enter trilogues defending a tighter reserve than the Commission or Berlin wants: Germany's leaked position, reported last week, opposes halving the intake rate and would only pause it to 2030.

That vote sits alongside the wider ETS revision. Peter Liese, the lead MEP, published his draft report on Friday with a slower cap decline than the Commission, 3.4 percent a year from 2031 and 2.3 percent from 2036 against 3.7 and 1.7, and a requirement that governments spend 75 percent of auction revenue on decarbonising ETS industries. Parliament and the Council both aim to fix their positions by December before negotiations start. Monday's debate suggests that even the parts of the package that centrist groups treat as housekeeping will be contested on the floor.

For compliance teams and CFOs, the reserve decision is the one to watch this week. The invalidation threshold and the intake rate determine how much surplus is withdrawn from the market over the next few years, and therefore how much support the allowance price has if industrial demand stays weak. Companies preparing ESRS E1 climate scenarios or internal carbon prices anchored to EUA forward curves should widen the range of outcomes they model rather than pick a single trajectory, and should note the divergence with the United States, where the EPA on the same day removed federal limits on power plant emissions entirely. That contrast strengthens the political case for CBAM inside Parliament, and it will feature in the arguments centrist MEPs make for holding the ETS steady.