Greece has reshaped its natural gas supply structure in 2026, with liquefied natural gas (LNG) emerging as the dominant source while imports from Russia continue to decline rapidly. New data from the Green Tank research organization show LNG covered nearly two-thirds of Greece’s gas demand in the first five months of the year. In that period, LNG imports via Revithoussa and the Alexandroupoli floating storage and regasification unit (FSRU) reached a record 18.9 TWh. The figure accounted for 64.3% of total consumption.
LNG volumes rise through Revithoussa and Alexandroupoli
The Green Tank data indicate that LNG deliveries through the Revithoussa LNG terminal and the Alexandroupoli FSRU increased to 18.9 TWh between January and May. This volume represented 64.3% of Greece’s total gas consumption over the same months. The report frames LNG as the leading component of supply during the period covered. Total demand levels are reflected in the consumption figures reported alongside these imports.
Russian pipeline deliveries fall at Sidirokastro interconnection
Russian pipeline gas continued to lose market share in Greece during the first five months of 2026. Deliveries through the Sidirokastro interconnection totaled 7.2 TWh, a decline of almost 40% versus the same period in 2025. As a result, Russia’s share of the Greek gas market fell to 24.4%. The reduction aligns with Greece’s stated objective to phase out Russian gas imports by the end of 2027.
TAP flows into Greece and market shares shift
Gas flows entering Greece via the Trans Adriatic Pipeline (TAP) at Nea Mesimvria amounted to 4.3 TWh between January and May. This volume corresponded to a 14.7% market share for Azerbaijan-linked supplies in the period. The data also show that while Russia declined sharply, other sources maintained a smaller but present role in overall supply. The evolving import mix is reflected in both consumption shares and interconnection volumes.
LNG pricing pressures and American shipment concentration
The transition away from Russian pipeline gas is described as occurring alongside higher LNG price pressures tied to rising geopolitical tensions in the Middle East. The Green Tank data link these tensions to increased LNG costs, affecting diversification expenses. Another issue highlighted is growing dependence on American LNG for certain periods. Shipments from the United States accounted for up to 80% of total LNG imports at times, according to the report.
Greece exports increase while domestic consumption stays flat
Beyond domestic use, Greece strengthened its role as a regional gas hub during the first five months of 2026. Gas exports rose to 8 TWh, four times higher than in the same period of 2025. Around 6.7 TWh of these exports were transported northward through the Sidirokastro pipeline to Balkan markets. Total gas consumption remained stable at 29.35 TWh.
Power generation remains largest gas demand segment
The power generation sector was the largest consumer of gas, accounting for 63.1% of demand during January to May. Households and small businesses made up 25.4%, while industrial users accounted for 11.6%. These demand shares accompany the reported shifts in import structure across LNG terminals and pipeline interconnections.
