UK and EU Target July Summit for Carbon Market Linking Deal

UK and EU Target July Summit for Carbon Market Linking Deal An ETS linkage would reconnect British and European carbon markets, coinciding with Brussels' major review of allowance supply rules. The UK and EU are hoping to announce an agreement to link their emissions trading systems at a summit scheduled for July, Carbon Pulse reported. The deal would reconnect two carbon markets that separated when Britain left the EU's ETS after Brexit, creating its own UK ETS.⁵ That matters because the announcement would coincide with the European Commission's plan to propose updated EU ETS rules on 15 July, according to its latest draft agenda reported by Montel. Those updates are required by EU law to align the ETS with the bloc's new 2040 target to cut emissions by 90% from 1990 levels, up from the 55% reduction required by 2030. An ETS linking announcement at the same summit would give both sides a diplomatic win alongside a regulatory overhaul.⁴ But the July timeline faces headwinds. Analysts told Montel that the EU's proposed schedule to agree carbon market reforms in Q1 2027 appears "ambitious" and "extremely challenging." The ongoing geopolitical disruptions are likely to delay the process, they warned, as policymakers grapple with energy security concerns that compete directly with climate ambitions.² Climate commissioner Wopke Hoekstra signalled a measured approach. The Commission will propose "targeted improvements" to the EU ETS while maintaining "stable long-term signals" in its July review, he told Montel. That language suggests Brussels is wary of destabilising a market that generated EUR 43.2 billion in revenues in 2025, an 11% increase on the prior year, according to a new report by the International Carbon Action Partnership.^3,1 The revenue figure underscores what is at stake. The EU ETS accounted for 62% of earnings raised from global carbon pricing schemes in 2025, according to the same ICAP report. Any changes to the system's architecture, whether through internal reform or external linkage with the UK, would ripple through the world's most valuable carbon market.¹ For the UK, linking offers liquidity and price discovery. The UK ETS covers a fraction of the installations in the EU system. A standalone UK carbon market is thin enough that individual auction results can move prices disproportionately. Linking would deepen the order book, reduce volatility, and give UK-based emitters access to a broader pool of allowances.⁵ For the EU, the incentive is partly diplomatic. Post-Brexit trade relations have been fractious. A carbon market link would be one of the most substantive economic agreements between Brussels and London since the Trade and Cooperation Agreement. It would also set a precedent for linking with other jurisdictions as the EU's Carbon Border Adjustment Mechanism pushes trading partners to consider their own carbon pricing.^5,4 The practical mechanics of linking are substantial. The two systems would need compatible allocation rules, registry interoperability, and agreement on how to handle the EU's Market Stability Reserve alongside the UK's equivalent supply adjustment mechanism. Auction calendars and compliance cycles would all require alignment. The Commission's July proposal will reveal how far Brussels is willing to go on third-country linkage provisions.^4,3 The 90% emissions reduction target for 2040 adds another layer of complexity. Any linked system would need to accommodate tightening supply trajectories on both sides. The EU's cap is set to decline more steeply under the new target, and UK allowance supply would need to track a compatible pathway to avoid arbitrage that undermines either market's environmental integrity.⁴ Still, the political will appears stronger than at any point since Brexit. Both sides have signalled readiness. The question is whether July's timeline holds given the competing demands on EU policymakers, from the ETS review itself to the broader geopolitical pressures that analysts have flagged as a distraction from climate legislation.^2,3 The signal to watch is the Commission's 15 July proposal. If it includes explicit provisions for third-country ETS linkage with the UK named, the deal is close to done. If the language stays generic, expect the timeline to slip into 2027 alongside the broader ETS reform package.^4,2