TTF broke the €46-47/MWh band it had held for roughly 38 sessions, rising about 6% on Tuesday 2 June to around €48.9/MWh1 and re-approaching the €50 ceiling that capped the 18 May break at €50.17. The 25 May spike then hit €51.82 intraday before a US-Iran deal headline erased 8.1% in a session, confirming €50 as a diplomatic-premium ceiling. The 2 June move re-establishes that the structural premium is not fading: the 38-session hold was consolidation, not resolution.
The Iran diplomacy channel sets the ceiling. Each time a ceasefire headline materialises, TTF pulls 6-8% in a session; absent a headline, supply fundamentals re-establish the upward gradient. The asymmetry, a slow grind up against a sharp drop on diplomacy, is the trade expression of €50 as a diplomatic option rather than a physical floor.
Stacked with carbon, the level sets the marginal German CCGT at a clean spark spread barely positive to negative in off-peak hours. The €100-plus German power clear on 3 June was therefore a CCGT running at or below breakeven on a spread basis, dispatched because it was the marginal unit on the grid, not because the economics were compelling.
