Data released by DESFA, Greece’s gas transmission system operator, indicate a year of strong momentum for the country’s natural gas sector in 2025, marked by rising domestic consumption, sharply higher exports and heavier use of critical infrastructure.
Gas use within Greece increased to 70.16 TWh, up 6% year on year, confirming the continued role of natural gas in the national energy mix. When cross-border flows are included, total system demand reached 78.75 TWh, representing a 14% increase compared with 2024.
One of the most notable developments was the surge in exports. Outbound gas flows almost tripled year on year, climbing to 8.59 TWh and reinforcing Greece’s position as a key transit corridor supplying neighboring markets across southeastern Europe. To meet higher demand both domestically and regionally, gas imports also rose significantly, with total inflows reaching 78.88 TWh, nearly 14% higher than the previous year. The Sidirokastro entry point on the Bulgarian border accounted for almost half of all imports.
Liquefied natural gas (LNG) played an increasingly prominent role. Deliveries through the Revythoussa LNG terminal rose strongly despite a planned maintenance shutdown in late spring. Additional volumes entered the system via the Nea Mesimvria point, linked to the Trans Adriatic Pipeline (TAP), as well as through the Alexandroupoli floating storage and regasification unit (FSRU).
LNG activity intensified markedly over the year. Revythoussa handled nearly 31 TWh of LNG across 49 tanker arrivals, a sharp increase compared with 2024. The United States dominated supply, providing more than 80% of total LNG volumes, while smaller quantities arrived from Nigeria, Egypt, Algeria and Norway.
Small-scale LNG distribution also expanded rapidly. Truck loading operations at Revythoussa more than doubled, with over 700 trucks supplied during the year, reflecting growing demand from industrial consumers, remote regions and regional markets seeking flexible gas solutions.
In terms of end-use, electricity generation remained by far the largest consumer of natural gas, accounting for just over 70% of domestic demand and continuing to grow. Gas consumption through distribution networks also increased, while usage by industrial users and CNG stations declined compared with the previous year.
Overall, the 2025 data point to a gas system operating at significantly higher intensity across nearly all segments. Rising exports, stronger LNG flows and expanding small-scale services highlight Greece’s evolving role as a regional energy hub and underline the strategic importance of DESFA’s infrastructure in supporting supply diversification and market flexibility.