Greece’s natural gas market strengthened significantly in the first half of 2026, with rising cross-border flows becoming the main driver behind overall demand growth, according to the latest data from gas transmission system operator DESFA. The figures highlight Greece’s expanding role as a regional gas transit hub, supported by increased exports and stronger LNG activity.
Between January and June 2026, total natural gas demand reached 43.09 TWh, representing a 15.06% year-on-year increase compared with 37.45 TWh during the same period in 2025. The main contributor to this growth was external demand, as gas exports increased sharply to 8.72 TWh from 2.86 TWh a year earlier. The rise confirms Greece’s growing importance in supplying neighbouring markets through regional interconnections.
Domestic gas consumption remained broadly stable during the period. Gas demand within Greece declined slightly by 0.64% to 34.37 TWh, compared with 34.59 TWh in the first half of 2025. According to DESFA, lower consumption from electricity producers was largely balanced by stronger demand from industrial users, compressed natural gas (CNG) applications and distribution networks. At the same time, gas imports followed the overall market expansion, rising 14.76% year on year to 43.07 TWh.
The Revythoussa LNG terminal continued to be Greece’s leading import gateway, receiving 18.61 TWh of gas, or approximately 43% of total imports. LNG deliveries through the terminal increased by more than 25% compared with the first half of 2025, reinforcing the importance of LNG in Greece’s supply strategy. The Sidirokastro entry point ranked second with 15.47 TWh, followed by Nea Mesimvria with 5.53 TWh. Imports through the Alexandroupoli floating LNG terminal also recorded strong growth, reaching 3.46 TWh, more than three times higher than the previous year.
Electricity generation remained the largest source of domestic gas demand, despite a moderate decline compared with 2025. Gas-fired power producers consumed 22.41 TWh, down from 23.25 TWh in the first half of the previous year, accounting for around 65% of total domestic gas consumption. Meanwhile, distribution networks increased consumption to 8.08 TWh from 7.69 TWh, while industrial users and the CNG sector together raised demand to 3.88 TWh from 3.65 TWh.
The United States remained Greece’s largest LNG supplier during the first half of 2026. US LNG cargoes reached 12.67 TWh, representing around 70% of LNG volumes delivered through Revythoussa. Nigeria supplied 4.16 TWh, while additional LNG volumes arrived from Egypt, Algeria and Mauritania. Overall, 24 LNG shipments delivered 18.18 TWh of gas during the period, compared with 27 cargoes supplying 14.66 TWh in the same period of 2025.
Greece’s LNG infrastructure continued to expand beyond pipeline and terminal activity. DESFA reported further growth in LNG truck-loading operations, with the number of supplied trucks increasing to 537 during the six-month period, compared with 273 a year earlier. Traded LNG volumes doubled to 24,641 cubic metres, while the equivalent energy volume increased from around 0.08 TWh to 0.16 TWh, representing growth of more than 100% year on year.
The first-half 2026 data shows that Greece is becoming increasingly important within the Southeast European gas market. Stronger LNG inflows, rising exports and expanding infrastructure are strengthening the country’s position as a regional energy corridor, while supporting greater flexibility and security of supply across neighbouring markets.
