Hungarian gas TSO, FGSZ and its Slovakian counterpart, Eustream have completed all administrative and technical requirements to increase firm capacity at the Veľké Zlievce/Balassagyarmat interconnection point from Hungary to Slovakia, announced FGSZ.
The upgrade is effective immediately. The firm capacity in the Hungary-to-Slovakia direction rises from 3.5 billion cubic metres per year to 4.38 billion cubic metres per year, equivalent to 5,300,315 kilowatt-hours per hour. The additional capacity will first be offered as a daily product starting from gas day 1 December 2025 at the daily capacity auction held on 30 November 2025. It will subsequently be available in all further auctions according to the CAM Network Code calendar.
“Thanks to the optimization efforts on FGSZ’s system, this additional firm capacity increase at the Slovak-Hungarian interconnection point will be an important step in the establishment of the Vertical Corridor,” wrote Ferencz I. Szabolcs, CEO of FGSZ.
The Vertical Corridor is a north-south European gas pipeline project that links Greece, Bulgaria, Romania, Hungary, Slovakia, Moldova and Ukraine to enable bidirectional flows of non-Russian gas.