In the first half of 2025, domestic natural gas consumption in Greece rose by more than 12%, reaching 34.59 terawatt-hours (TWh), up from 30.78 TWh during the same period in 2024. When exports are included, total gas demand jumped nearly 20% to 37.45 TWh, compared to 31.22 TWh a year earlier.
Gas exports through the Sidirokastro and Nea Mesimvria interconnectors saw significant growth, increasing to 2.86 TWh—more than six times higher than the 0.44 TWh recorded in the first half of 2024. These interconnectors, which play a key role in regional energy flows, were major contributors to the export surge. Sidirokastro serves as a bidirectional link between Greece and Bulgaria, facilitating the transfer of Azeri gas and LNG, while Nea Mesimvria connects Greece to the Trans-Adriatic Pipeline (TAP).
Electricity generation remained the dominant sector for domestic gas use, consuming 23.25 TWh—67% of the total—an 18% increase from 19.69 TWh in the first half of 2024. Deliveries to the distribution network climbed by 18.7% to 7.69 TWh. In contrast, gas consumption by industrial users and CNG stations directly linked to the national grid declined by 20.8%, totaling 3.65 TWh.
On the import side, the Sidirokastro entry point delivered 16.40 TWh of gas, up 4.5% year-on-year. This includes volumes of Russian gas transiting through TurkStream via Bulgaria. The Revythoussa LNG terminal continued to play a vital role, handling 14.62 TWh of imports—a 59% increase—despite undergoing scheduled upgrades from April 22 to May 11. Over the six-month period, 27 LNG tankers arrived at the terminal, unloading a total of 14.66 TWh, a 64% rise compared to the previous year. The United States was the largest supplier, delivering 11.87 TWh, followed by Nigeria (1.37 TWh), Norway (0.93 TWh), and Algeria (0.49 TWh).
At Nea Mesimvria, gas imports declined by 9.3% to 5.47 TWh. Meanwhile, the Alexandroupoli Floating Storage and Regasification Unit (FSRU) contributed 1.03 TWh before halting regasification operations on January 22.
Revythoussa’s truck-loading station also saw notable growth, with 273 trucks loading 81.72 gigawatt-hours (GWh) of LNG—more than triple the previous year’s volume of 30.72 GWh from 104 trucks. This increase highlights the terminal’s expanding role in serving remote areas and industrial users across Greece and the wider region.
