Five European leaders — Germany's Friedrich Merz, the Netherlands' Rob Jetten, Belgium's Bart De Wever, Luxembourg's Luc Frieden, and Denmark's Mette Frederiksen — have written to European Commission president Ursula von der Leyen and European Council president António Costa urging them to agree a path toward UK re-entry into the EU's internal electricity market at the 20 November summit in Brussels. The letter, seen by the Guardian, frames the ask as essential to unlocking North Sea offshore wind potential. The summit itself is already loaded. Von der Leyen and Costa will meet UK Prime Minister Andy Burnham to sign deals on food and drink, carbon emissions, and youth exchange. The five North Sea states want energy market re-integration added to the agenda with explicit negotiation timelines. Their argument is structural: Britain and nine other European countries signed a North Sea wind pact earlier this year, but the UK's absence from the internal electricity market hobbles the grid integration those windfarms need. The friction point is money. Re-entry would require the UK to contribute to EU cohesion funds — money that flows to infrastructure projects in central and eastern Europe. British officials are allergic to this. Last year, negotiations over UK participation in a €150bn EU defence fund collapsed over exactly this issue: the size of the contribution. The pattern is clear. Every deeper-integration deal hits the same wall. EU diplomats are trying to reframe the cost. Rather than "paying into cohesion funds," they want the UK to see it as "investing in access to a more integrated, secure and competitive European energy market." Industry body Energy UK published figures in 2024 estimating that maintaining the current post-Brexit energy relationship would cost Britain an extra £10bn from 2024-29 through higher bills and lower Treasury revenues. The implicit message: you're already paying for separation; this just makes the payment productive. Prime Minister Burnham has signalled openness to examining all options — customs union, single market return, or full EU membership. But the EU's former Brexit negotiator Michel Barnier has already drawn the line: no cherry-picking. "There will be no possibility to have one freedom and not the other," he told the BBC's Laura Kuenssberg. The four freedoms remain indivisible in Brussels' view, which means any sector-specific re-entry becomes a test case for the whole relationship. Labour MP Stella Creasy, chairing the Labour Movement for Europe, is pushing further — campaigning for a de-facto second referendum in the next Labour manifesto. She cited declining exports and the basic geographic reality of the UK's proximity to the world's largest trading bloc. "We walked out of it, which means that we now face a huge amount of friction to trade with them." The structural question is whether sector-by-sector re-integration is politically sustainable or whether each deal merely exposes the underlying logic that full single-market participation is the only configuration that eliminates the friction costs. The North Sea energy case is the strongest test: a concrete, measurable cost of separation (£10bn over five years), a clear infrastructure rationale (offshore wind grid), and five named governments pushing for it. If this can't close, nothing sector-specific will.
