The recent extension of the Vertical Gas Corridor is a significant development in bolstering natural gas supply routes toward Eastern Europe. This initiative facilitates the ongoing transport of natural gas from Greece to Ukraine, with the operational framework secured until September 2026. Such measures aim to ensure stable cross-border energy flows, which are critical for regional energy security.
Under the new arrangements, monthly capacity auctions will be held, typically taking place midweek shortly after the third Monday of each month. These auctions are designed to provide market participants with reliable access to transport capacity, promoting transparency and efficiency in the regional gas market.
A pivotal component of this corridor is Route 3, which enables gas entering the Greek system—via the DESFA network, virtual trading hub, or Revythoussa LNG terminal—to flow northward. From the Nea Mesimvria entry point, gas can be redirected through reverse flow along the Trans-Adriatic Pipeline (TAP). This route facilitates supply to the Balkans and extends further into Ukraine, integrating various capacity products such as interruptible exit capacity and commercial reverse flow services, all coordinated through established European trading mechanisms.
To optimize the corridor’s operations, transmission system operators and the interconnector operator ICGB have collaborated with the European Commission to implement a revised tariff structure. This adjustment aims to enhance the route’s competitiveness and attractiveness within the larger European gas network, facilitating better integration and operational efficiency.
The extension of this corridor is expected to maintain flexibility in regional gas supply, while also supporting diversification efforts across Southeastern and Eastern Europe. Such developments are crucial for reinforcing energy security in a region that continues to face various geopolitical challenges.
