The price gap between Central Europe's CEGH gas hub and the European TTF benchmark compressed to EUR 0.41 per megawatt-hour on 11 June, down 80% from the EUR 2-plus premium ACER documented through May. Six days before the EU's 17 June Russian pipeline ban, traders are not pricing a supply shock.
The reason is the exemption structure: long-term TurkStream contracts supply the bulk of Hungarian and Slovak gas and run until at least 30 September 2027, so only a thin slice of short-term volumes are removed on 17 June. The real basis trade is the winter 2027 contract roll-off, not the June date.
