New data from the Green Tank research organization show that liquefied natural gas (LNG) covered nearly two-thirds of Greece’s gas demand in the first five months of the year. LNG imports via the Revithoussa terminal and the Alexandroupoli floating storage and regasification unit (FSRU) totaled 18.9 TWh between January and May. That volume accounted for 64.3% of total consumption.
LNG imports rise through Revithoussa and Alexandroupoli
The Green Tank figures indicate that LNG supply became the dominant component of Greece’s gas balance during the period. Imports were delivered through the Revithoussa LNG terminal and the Alexandroupoli FSRU. Together, these routes supplied 18.9 TWh, representing 64.3% of total gas demand from January to May.
In parallel, pipeline deliveries continued to decline in relative importance. The data show that LNG covered nearly two-thirds of demand while Russian pipeline volumes fell enough to reduce Russia’s market share. The shift in sourcing is reflected in both consumption shares and interconnection flows.
Russian pipeline deliveries fall via Sidirokastro interconnection
Russian pipeline gas has continued to lose market share in Greece, according to the same dataset. Deliveries through the Sidirokastro interconnection totaled 7.2 TWh between January and May. That was a decline of almost 40% versus the same period in 2025.
The reduction lowered Russia’s share of the Greek gas market to 24.4%. The figures indicate that Russia’s role has fallen compared with earlier levels, even as total demand remained steady.
TAP volumes enter Greece at Nea Mesimvria
Azerbaijan also saw a slight reduction in its role over the period. Gas flows through the Trans Adriatic Pipeline (TAP), entering Greece at Nea Mesimvria, amounted to 4.3 TWh. This gave Azerbaijan a 14.7% market share.
The changing import mix aligns with Greece’s stated objective of fully phasing out Russian gas imports by the end of 2027. At the same time, higher LNG prices linked to rising geopolitical tensions in the Middle East have increased the overall cost of diversification.
LNG supply concentration and US shipment share
The data also point to a growing reliance on American LNG during certain periods. Shipments from the United States accounted for up to 80% of total LNG imports in some windows. This raised concerns about supply concentration despite improved diversification away from Russia.
The report frames these developments within a broader restructuring of Greece’s gas supply sources during 2026. It also links the diversification process to changes in pricing conditions for LNG cargoes arriving during periods of heightened regional tensions.
Greece exports more gas northward through Sidirokastro
Beyond domestic consumption, Greece is strengthening its role as a regional gas hub based on export flows reported for the first five months of the year. Gas exports increased to 8 TWh, which was 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 was still the largest end-use sector, accounting for 63.1%
