In the first six months of 2026, domestic gas consumption reached 34.4 TWh, down slightly from the all-time high set in 2025. LNG ranked first in imports for the six-month period and reached a record high (22.07 TWh), while imports via Sidirokastro continue as usual, though the majority are re-exported (7.35 TWh, 47.5% of the six-month total).
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 (June 2026). It also uses the latest monthly data published by Eurostat on imports of liquefied natural gas (LNG) imported from Russia (May 2026).
Consumption
June
In June 2026, domestic gas consumption was 5.03 TWh, up 10.2% compared to May, but the lowest for the month of June in the last three years. Compared to June of last year, it was down by 9.2%.
The power generation sector, at 3.9 TWh, accounted for 77.5% of domestic consumption. Compared to May, gas consumption for electricity generation fell by 20.2%, while compared to June of last year, it fell by 10.2%.
The grids sector followed with consumption of 665 GWh (13.2% of the total), the lowest so far this year. Compared to May, gas consumption in networks fell by 12.7%, while compared to June of last year, it rose by 12.2%.
Lastly, the industrial sector recorded 468 GWh, the lowest consumption in the last 13 months. Compared to May, consumption fell by 16.7%, while compared to last year, it fell by 22.8%. The industry’s share of total domestic consumption fell to 9.3%, the lowest share in the last 16 months.
Cumulatively in the first six months of the year, total domestic gas consumption reached 34.4 TWh, the second highest on record after 2025, which was just 0.6% (+0.22 TWh) higher.
The electricity sector was the largest consumer at 22.4 TWh, marking the second highest consumption for the half-year since 2025. Compared to last year, gas demand for electricity fell by 3.6%. Networks were the second largest consumer at 8.08 TWh, marking the second highest consumption for a half-year period since 2022. Compared to last year, demand for networks increased by 5% (+0.39 TWh). In last place, the industrial sector consumed 3.9 TWh, an increase of 6.4% compared to the first half of 2025.
As for the breakdown of domestic consumption across the three sectors, electricity accounted for 65.2%, networks for 23.5%, and industry for 11.3%.
Total gas exports in June 2026 were 0.7 TWh, nearly half of May’s total. The largest share was exported via Sidirokastro (0.66 TWh), while small quantities of gas were also exported via the Nea Mesimvria gateway (0.05 TWh). Exports via Komotini-IGB were zero.
Cumulatively, gas exports for the first six months of the year reached 8.72 TWh, more than triple the exports of the first half of 2025. Most of these (84.3%) were routed through Sidirokastro, totaling 7.35 TWh, followed by the Komotini-IGB gateway with cumulative exports of 1.02 TWh for the five-month period and an 11.7% share. Finally, the Nea Mesimvria gateway, with exports of 0.35 TWh, accounted for 4% of total exports during this period.
June
Total net imports into the National Transmission System, covering domestic needs exclusively, amounted to 5.02 TWh in June, up 9.9% compared to May due to an increase in LNG imports via Agia Triada, which more than offset the decrease in imports via Sidirokastro and Nea Mesimvria.
The Revythousa FSRU (Agia Triada gate) ranked first in imports, with LNG imports reaching 3.2 TWh, up 74% compared to May. Imports through the Amfitriti gate (Alexandroupolis FSRU) were zero, as in the previous two months, since the terminal is undergoing a three-month maintenance period.
The Sidirokastro gate (which is the main entry point for Russian gas) ranked second in imports, with net imports of 0.95 TWh, down 46.7% from May.
In last place were imports through the Nea Mesimvria gate (through which Azerbaijani gas is imported via the TAP pipeline), at 0.86 TWh (-8.9% compared to May). Imports through the Kipoi gateway were zero, as has been the case since January 2024.
First six months of the year
In the first six months of 2026, total net gas imports[1] used for domestic consumption amounted to 34.4 TWh, down 0.9% compared to the same period in 2025.
LNG imported through the Agia Triada and Amfitriti gates ranked first, with cumulative imports of 22.07 TWh, marking a historic high for this period (+40.8% compared to the first half of 2025). This was followed by imports via the Sidirokastro gate, which totaled 8.2 TWh, down 40.7% compared to last year. Gas imports via the Nea Mesimvria gate totaled 5.2 TWh, down 4.8% from 2025 and the lowest in three years.
In terms of the breakdown of net imports, LNG accounted for 64.2%, while Sidirokastro and Nea Mesimvria accounted for 23.6% and 15.1%, respectively.
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 half of 2026, total imports via Sidirokastro were 15.5 TWh. However, exports via Sidirokastro accounted for 47.5% of imports or 7.35 TWh. Thus, net imports via Sidirokastro totaled 8.2 TWh, the lowest level in the past three years for this period of the year.
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.
