The first 9 months of 2025 saw the second highest historical gas consumption (51.3 TWh) after 2021. Demand in the power generation sector reached a decade high (36.5 TWh, 71% of the total). LNG was the first source of imports (22.8 TWh, +81% compared to 2024), although in September, Russian gas imports (2.51 TWh) exceeded LNG (1.63 TWh).
Consumption
September
According to the latest data available from DESFA on validated Daily Gas Deliveries and Off-takes[1], total domestic gas consumption in September 2025 was 4.98 TWh, down 6.7% compared to August, mainly due to reduced gas use in the power sector (-12.1%, 3.76 TWh). Demand in industry and in networks increased this month, by 7.2% and 24.1% respectively, resulting in similar consumption (612 GWh in industry and 614 GWh in networks).
Compared to September 2024, total domestic gas consumption saw a slight increase of 2.4% (+117 GWh). Demand in the power sector and in networks increased by 1.7% (+64 GWh) and 15.6% (+83 GWh) respectively, while demand in industry decreased by 4.7% (-30 GWh).
First nine months of the year
Cumulatively, in the first nine months of 2025, total domestic gas consumption was 51.3 TWh, up 7.7% (+3.6 TWh) compared to the same period in 2024 and the second highest level on record[2] since 2021.
The power generation sector, with 36.5 TWh, reached a decade high. Compared to the same period in 2024, gas demand for electricity increased by 10% (+3.3 TWh). Gas demand in networks reached 9.4 TWh, recording the highest year-on-year increase of 18% (+1.4 TWh). The industrial sector followed the opposite trend as it decreased by 18.4%, reaching 5.4 TWh.
Regarding the breakdown of consumption by use, electricity retains the largest share of 71% of total consumption for the first nine months of 2025. This is followed by networks with a share of 18.4%, and finally, industry with 10.6% of consumption.
Imports
September
Total imports in September 2025 were 4.99 TWh, down 6.3% (-0.34 TWh) from August. Exports from the IGB (Interconnector Greece Bulgaria) exiting at Komotini and from Sidirokastro gate were zero. Consequently, all gas imports recorded in DESFA’s validated Daily Gas Deliveries and Off-takes covered exclusively domestic needs.
Regarding the breakdown by entry points, last month’s trend was reversed in September, as Russian gas via pipeline from the Sidirokastro gate was in first place with 2.51 TWh. This is likely due to natural gas pipeline prices following a downward trend in September based on the Dutch TTF Index[3].
Liquefied natural gas (LNG) imports from the Agia Triada[4] entry point fell to second place with 1.63 TWh after a quarter (since June 2025) where they were first in imports.
Azeri gas from TAP imported via the Nea Mesimvria entry point remains in third place with 0.86 TWh, showing a slight decrease compared to August of 8.8% (-0.08 TWh).
LNG imports from the Amfitriti[5] entry point, which has been in the process of restarting since mid-August, were zero[6]. Imports from the fifth entry point at Kipoi also remained zero, as has been the case since January 2024.
First nine months of the year
According to the data recorded in DESFA’s validated Daily Gas Deliveries and Off-takes, total fossil gas imports in the first nine months of 2025 amounted to 51.7 TWh and were the second highest on record for this period2 after 2021. Compared to the first nine months of 2024, total imports increased by 1.9% (+0.99 TWh), mainly due to a large increase in LNG imports, which more than covered the decrease in Russian gas imports via Sidirokastro.
In this period, leading import flows were LNG from the entry points of Agia Triada and Amfitriti, with a share of 44.1% (22.8 TWh), an increase of 81.1% (+10.2 TWh) compared to the first nine months of 2024.
Imports of Russian gas from the Sidirokastro gate came second, with a 40.1% share and total imports of 20.8 TWh over nine months, showing a decrease of 20.1% (-5.2 TWh) compared to the same period in 2024.
In last place was the Nea Mesimvria gate with a 15.8% share (8.2 TWh). Azeri gas imports via the TAP pipeline and the Nea Mesimvria gate have decreased by 12.2% (-1.1 TWh) 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). In early May 2025, the European Commission announced a plan to completely ban imports of Russian fossil fuels. The plan aims to ban gas imports through new contracts and existing spot contracts[7] by the end of 2025, and a complete ban on gas imports through long-term contracts by the end of 2027.
However, in September 2025, Russian gas imports to Greece via pipeline moved to top import position with 2.51 TWh, registering a 53% increase compared to August. The last time Russian gas imports exceeded those of LNG was during the two-month period of April – May 2025. It is also noted that Russian gas (pipeline and LNG) was the first source of gas imports to Greece from June 2023 until October 2024, while since November 2024, and according to the latest Eurostat data, Russian LNG imports to Greece have been zero[8].
Comparison between EU-27 Member States
According to the latest available Eurostat data[9] (August 2025), Greece increased its gas consumption between 2024 and 2025 by 7.7% for the period January – August, more than double the increase in the EU-27 for the same period (3.8%). Of the remaining Member States, 9 decreased their consumption, with Sweden and Estonia leading the way (-17.1% and -14.3% respectively for the 8 months), while 16 (including Greece) increased their consumption, with Austria and Croatia in the worst positions (+15.5% and +13.8% respectively).
Read here the analyses of the previous months since the start of the EU reduction measures in August 2022.
[1] DESFA – Validated Daily Natural Gas Deliveries / Off-takes: https://tinyurl.com/yc7acrfn
[2] Since 2008, when published data have been available in DESFA’s reports
[3] EEX TTF Index: https://www.eex.com/en/market-data/market-data-hub/natural-gas/indices
[4] FSRU Revithousa
[5] FSRU Alexandroupolis
[6] Following an announcement by Gastrade, the terminal resumed operations on 11th August 2025 and at 75% of full capacity from 1st October 2025. https://www.gastrade.gr/2025/08/11/epanenarksi-ypiresion-ekfortosis-kai-aeriopoiisis/
[7] Spot gas contracts refer to physical delivery contracts for short-term products (in the day-ahead or intraday markets)
[8] Until May 2025, when the latest data are published by Eurostat.
[9] Cyprus is not included in the analysis as it has zero gas consumption.
