Gas consumption hit a historic high in the first half of 2025, reaching 34.6 TWh, mainly driven by power generation (67%), which recorded a ten-year record high (23.3 TWh). LNG was the top source of imports, surpassing Russian gas. In June, gas consumption rose to 5.5 TWh (+29.4% compared to May). Across Europe, gas consumption increased by 7% over the first five months, with Greece among the 19 countries that saw higher consumption.
Consumption
June
According to the latest available data from DESFA, total domestic gas consumption in June was 5.53 TWh, up 29.4% compared to May. The largest changes in consumption this month came from the power sector and industry. Gas demand for electricity increased by 36.8% (+1.16 TWh), while gas demand in industry increased by 40.4% (+0.17 TWh) compared to May. Grid consumption fell 12.2% month-on-month to 0.59 TWh – a low for 2025.
Compared to June 2024, gas consumption increased by 2.4% (+0.13 TWh). The increase was driven by all three uses, with demand for electricity, however, at very similar levels to last year. In contrast, gas use in industry and networks increased further, by 12% (+66 GWh) and 10.9% (+58 GWh) respectively, compared to June 2024.
First six months of the year
Cumulatively, in the first half of 2025, total domestic gas consumption reached 34.59 TWh, up 12.4% (+3.81 TWh), compared to the first half of 2024 – the highest level on record.
This increase was primarily due to the rise in gas use in power generation, which reached a decade high of 23.25 TWh and marked an increase of 18.1% (+3.56 TWh), compared to the first half of 2024. The power plant of Thermoilektriki Komotinis, which is still in trial operation, increased gas consumption in the power sector by 1.26 TWh in this six-month period.
Gas consumption for networks reached 7.69 TWh cumulatively for the first half of the year, up 18.7% (+1.2 TWh) compared to the same period in 2024, recording the second highest value historically since the first half of 2022. The largest quantitative increase was recorded in the networks of Athens (+359 GWh), Thessaloniki (+385 GWh), and Oinofita (+128 GWh).
In contrast, gas consumption in industry reached 3.65 TWh, down 21% (-0.97 TWh) compared to the first half of 2024. In terms of the breakdown of consumption by use, electricity accounted for a larger share compared to the first five months, covering 67.2% of the half-year demand. The networks followed with 22.2% of demand, while industry held the smallest share with 10.6%.
Imports
June
Total imports in June 2025 were 5.71 TWh, an increase of 32.7% (+1.41 TWh) compared to May. Exports from IGB (Interconnector Greece Bulgaria) exiting at Komotini were zero. Exports from IGB from the exit of Sidirokastro were 0.17 TWh this June, after 21 consecutive months of zero exports (since September 2023).
Regarding entry points, liquefied natural gas (LNG) imports from the gate of Agia Triada moved into first place this month, reversing April and May’s trend, when Russian gas from Sidirokastro topped the imports. More specifically, LNG imports from Agia Triada gate were 2.75 TWh, up 176% (+1.754 TWh) compared to May. LNG imports from Amfitriti[1] gate were zero due to the technical problem that the plant has been experiencing since late January[2].
Gas imports from Sidirokastro gate fell to 2.05 TWh (-13%, 0.31 TWh compared to May). Nea Mesimvria gate followed last with gas imports of 0.91 TWh (-3.8%, 36 GWh compared to May).
Finally, there were zero imports from the fifth entry gate at Kipoi (as since January 2024).
First six months of the year
As for the first half of 2025, total fossil gas imports were 35 TWh, up 6.7% compared to the first half of 2024.
Leading in import flows was LNG from Agia Triada and Amfitriti gates with a 44.8% share (15.67 TWh). LNG imports increased by 63.2% (+6.07 TWh) compared to the first half of 2024.
In second place was Russian gas from the Sidirokastro gate with a 39.6% share of total imports (13.87 TWh), while Azeri gas from the Nea Mesimvria gate was last with 15.6% (5.46 TWh).
Russian gas imports via the Turkstream pipeline (Sidirokastro gate) have decreased by 10.3% (-1.6 TWh), and Azeri gas imports via the TAP pipeline have decreased by 6.3% (-0.37 TWh) respectively, compared to the same period in 2024.
Greece’s dependence on Russian gas
Fossil gas from Russia is imported into Greece in two different forms, either as gas through the Turkstream pipeline from Sidirokastro gate or in the form of liquefied natural gas (LNG). For the first time, imports of Russian LNG were recorded in October 2022.
By mid-2023, Russian-sourced gas (both pipeline and LNG) had reclaimed its position as the first source of imports, reversing the post‑2022 trend that had seen non‑Russian LNG lead. This trend persisted for all the following months, until October 2024. However, in November, Russian gas fell to second place – a position it maintained for six months until March 2025.
In April 2025, Russian pipeline gas returned to the top import position, surpassing LNG (excluding Russian gas), and maintained this position through May 2025.
In early May 2025, the European Commission announced the RePowerEU plan to fully phase out imports of Russian fossil fuels. The plan aims to ban gas imports through new contracts and existing spot contracts by the end of 2025, as well as a complete ban on gas imports through long-term contracts by the end of 2027.
In Greece, in June 2025, Russian pipeline gas imports fell to 2.05 TWh (from 2.36 TWh in May), falling to second place behind LNG, and accounting for 36% of all gas imports. It is worth noting that since October 2024, Russian gas has been entering only via pipeline, while imports in the form of LNG are zero[3].
Comparison between EU-27 Member States
According to the latest available Eurostat data[4] (May 2025), Greece recorded a 13.8% increase in gas consumption between 2024 and 2025 over the first five months. This marks an improvement relative to the previous analysis periods, when Greece ranked last, recording the highest increase in gas consumption among EU countries.
This improvement in Greece is mainly due to a worse situation in other Member States, many of which have significantly increased their gas consumption in this period. The same picture is confirmed in the latest quarterly report of the European Commission (DG Energy) for the first quarter of 2025, which shows that Europe is moving in the opposite direction to that set previously towards decreasing gas use[5].
In particular, 19 Member States, with Greece among them, increased their gas consumption between 2024 and 2025 for the first five months, with Croatia and Austria in the worst position (+19.6% and 19.2% increase, respectively). As a result, the EU-27 average was a 7% increase in gas consumption between 2024 and 2025 for the first five months. The remaining 7 countries recorded a decrease, with Sweden leading the way (-25%)
Read here the analyses of the previous months since the start of the EU reduction measures in August 2022.
[1] FSRU Alexandroupolis
[2] According to Gastrade’s announcement, the station will resume operations on August 15, 2025 at 25% of its maximum available regasification capacity and normally from October 1, 2025 https://www.gastrade.gr/en/2025/05/15/resumption-of-regasification-services-2/
[3] Until May 2025, when the latest data are published by Eurostat.
[4] Cyprus is not included in the analysis as it has zero gas consumption.
[5] Quarterly report on European gas markets – Market Observatory for DG Energy Vol. 18 (Q1 2025)
