Domestic gas consumption rose in May (4.6 TWh), mainly due to electricity generation (+15.4% compared to April). LNG imports via Revythousa ranked first with 1.85 TWh. However, Russian gas via Sidirokastro followed closely behind with 1.78 TWh. In the first five months of 2026, domestic consumption was at similar levels to last year (29.35 TWh), while LNG imports reached a record high (18.9 TWh), and gas exports quadrupled compared to 2025 (8 TWh).
This analysis concerns domestic consumption, imports, and exports of fossil gas. It is based on historical data from DESFA on Validated Daily Natural Gas Deliveries / Off-takes (until December 2025), as well as the latest available data of N.G. Nominations / Allocations from DESFA’s New Commercial Information System (May 2026). It also uses the latest monthly data published by Eurostat on imports of liquefied natural gas (LNG) imported from Russia (April 2026).
Consumption
May
In May 2026, domestic gas consumption totaled 4.6 TWh, up 4.4% compared to April and 6.7% compared to May 2025.
The power generation sector accounted for 71% of domestic consumption, with 3.2 TWh and a 15.4% increase compared to April. This was followed by the grid sector with 762 GWh and 16.7% of the total, despite a 22.7% decrease compared to the previous month. Lastly, the industrial sector recorded 562 GWh, very close to April’s levels (-2.6%), while its share of total consumption was 12.3%.
First five months of the year
Cumulatively in the first five months of the year, total domestic gas consumption reached 29.35 TWh, marking a record high as it was up 1% compared to consumption in 2025 for the same period.
The electricity sector remained the largest consumer at 18.5 TWh, despite a slight decrease (-2.1%) compared to 2025. Networks were the second-largest consumer at 7.4 TWh and recorded the second-highest consumption for this period since 2022. Compared to the first five months of last year, network consumption increased by 4.4%. Industry ranked last with 3.4 TWh and a 12.3% increase compared to the first five months of 2025.
Regarding the breakdown of domestic consumption across the three sectors, electricity accounted for 63.1%, networks for 25.3%, and industry for 11.6%.
Exports
Total gas exports in May 2026 amounted to 1.4 TWh, more than double April’s exports, and were entirely routed through Sidirokastro, as exports via the Nea Mesimvria and Komotini-IGB exit points were zero.
Cumulatively, gas exports for the first five months of the year reached 8 TWh, four times the exports of the first five months of 2025. The largest share (83.6%) was via Sidirokastro with 6.7 TWh. This was followed by the Komotini-IGB gate with total exports of 1 TWh for the five-month period and a 12.8% share. Last was the Nea Mesimvria gate with exports of 0.3 TWh and a 3.7% share.
Imports
May
Total net imports into the National Transmission System, covering domestic needs exclusively, amounted to 4.57 TWh in May, up 5% compared to April due to a decrease in LNG imports.
The Agia Triada gate (Revythousa FSRU) ranked first, with LNG imports reaching 1.85 TWh (-12.4% compared to April). Imports from the Amfitriti terminal (Alexandroupolis FSRU) were zero, as in the previous month, as the terminal is undergoing a three-month maintenance.
In second place for imports, but close behind, was the Sidirokastro gate (which is the main entry point for Russian gas) with net imports of 1.78 TWh, up 35.3% compared to April.
In last place was the Nea Mesimvria gate (through which Azerbaijani gas is imported via the TAP pipeline) with 0.94 TWh. Imports from the Kipoi gate were zero, as has been the case since January 2024.
First five months of the year
In the first five months of 2026, total net gas imports[1] used for domestic consumption amounted to 29.4 TWh, an increase of 0.9% compared to the same period in 2025.
LNG imported through the Agia Triada and Amfitriti gates ranked first with cumulative imports of 18.9 TWh, marking a historic high for this period. This was followed by imports via the Sidirokastro gate, which reached 7.2 TWh, marking a 39.3% decrease compared to last year. Gas imports via the Nea Mesimvria gate totaled 4.3 TWh, down 4.5% compared to 2025.
Regarding the breakdown of net imports, LNG accounted for 64.3%, while Sidirokastro and Nea Mesimvria accounted for 24.4% and 14.7%, respectively.
Greece’s dependence on Russian gas
Greece has eliminated imports of Russian LNG since November 2024, thus already aligning itself with EU’s subsequent decision to ban imports of Russian gas from January 1st, 2027. However, as for Russian pipeline gas, imports continue. A portion is used for domestic consumption, while the majority is supplied to neighboring countries, as exports through the Sidirokastro gate have remained at high levels since the beginning of the year.
More specifically, for the first five months of 2026, total imports via Sidirokastro were 13.9 TWh. However, exports via Sidirokastro exceeded half the volume of imports, resulting in net imports of 7.2 TWh, a 39.3% decrease compared to the same period last year.
According to REPowerEU’s timeline, EU-27 member states were required to submit a plan for complete independence from Russian gas by 2027, which Greece appears to have done[2].
Read here the analyses of the previous months since the start of the EU reduction measures in August 2022.
[1] We consider as total net gas imports the difference between total imports and total exports from all entry and exit gas points.
[2] The European Commission receive’s roadmap for ending Russian gas imports – LNG as “counterbalance” and reducing demand: https://bit.ly/4vFSTz9
