12/06/2026
Greece has replaced Russian and Azeri gas with LNG, while draws a new strategy to shield its energy infrastructure
Greece is rapidly weaning itself off Russian natural gas, with liquefied natural gas emerging as the dominant energy source in the first five months of 2026, according to data released by the Green Tank think tank.
LNG covered 64.3% of domestic demand from January through May, while Russian gas fell to a 24.4% share – down sharply from 44.6% at the end of 2025.
Russian gas imports entering the Greek system through the Sidirokastro crossing totaled 7.2 TWh, a 39.3% drop from the same period last year.
Azerbaijani gas, delivered via the TAP pipeline through the Nea Mesimvria entry point, also lost ground, slipping to a 14.7% share with imports of 4.3 TWh, down 4.5%.
LNG imports through the Revythoussa terminal and the Alexandroupolis floating storage and regasification unit reached a combined 18.9 TWh for the period, a record for that timeframe.
> Greece is on track to achieve full independence from Russian gas by end-2027, though the transition is coming at a cost, as increased LNG imports have been hit by elevated prices driven by renewed tensions in the Middle East.
A further concern, shared across Europe, is the growing dependence on American LNG, which at times accounted for as much as 80% of Greece’s total LNG imports during the period.
The data also highlighted Greece’s expanding role as a regional gas exporter. Exports in the first five months quadrupled compared to the same period in 2025, reaching 8 TWh, with 83.6% – some 6.7 TWh – flowing north through Sidirokastro to Balkan countries.
Domestic gas consumption held steady at 29.35 TWh, with power generation accounting for 63.1%, household and small business networks 25.4%, and heavy industry 11.6%.
Speaking at the annual FuelsEurope Conference in Brussels on Wednesday (10 June 2026), NATO Deputy Secretary General Radmila Shekerinska underlined the critical role of energy and fuel supplies in supporting the Alliance’s deterrence and defence.
Ms Shekerinska highlighted that defence depends on secure access to fuel and energy, and emphasised the importance of ensuring that fuel supply chains remain secure, resilient, and able to support miliary operations in times of crisis. The Deputy Secretary General stressed the need to reduce strategic vulnerabilities and strengthen the protection of critical energy infrastructure. She also noted that close cooperation between the defence and energy sectors remains essential to strengthen Allied security and resilience.
Greece is advancing a national plan to strengthen the protection of critical infrastructure against a growing range of hybrid and cybersecurity threats, with a particular focus on energy facilities that officials regard as increasingly vulnerable amid geopolitical tensions.
A central pillar of the effort will be a new General Secretariat for the Protection of Critical Infrastructure, to be established under the supervision of the Ministry of Citizen Protection.
The body will be responsible for coordinating, monitoring and implementing a national security plan covering a broad range of sectors, including energy, telecommunications, water networks, transportation and health services.
The pace of the initiative is expected to be shaped by a broad meeting scheduled for Wednesday under Thanos Dokos, national security adviser to the prime minister.
Companies and organizations that manage critical infrastructure, and representatives from the ministries of Citizen Protection and National Defense, will present proposals, studies and operational plans.
> Officials involved in the process have highlighted coordination as the main challenge. A country’s resilience against hybrid attacks is only as strong as the weakest link in the chain, participants in the process have emphasized.
The framework foresees strict penalties, including fines of up to €10 million for companies that fail to comply with security requirements.
The initiative is linked to Greece’s obligation to align with the European Union’s directive calling on member-states to identify critical infrastructure and contribute to a broader European resilience strategy against natural disasters, terrorism and hybrid threats.
Energy infrastructure has emerged as a key concern. Power generation facilities, transmission networks, natural gas pipelines, LNG terminals, refineries, cross-border interconnections and subsea electricity cables are viewed as increasingly exposed to hybrid threats.
According to the text, Europe recorded 219 hybrid warfare incidents between 2014 and 2024, with 86% occurring after Russia’s invasion of Ukraine and 45% recorded in 2024 alone.
Greek energy companies have already begun adapting. DESFA strengthened measures following a 2022 cyberattack and secured no-fly-zone status for the Revythoussa LNG facility against drone threats.
ADMIE has launched surveillance of critical transmission infrastructure and is examining additional safeguards for subsea electricity links, which experts consider among the most vulnerable components of modern energy systems.