Athens, Greece – Greece has signed a landmark liquefied natural gas (LNG) supply agreement with Ukraine to provide energy during the harsh winter months as the country continues to endure the consequences of Russia’s ongoing invasion. The deal, announced on Sunday, November 16, 2025, was formalized during Ukrainian President Volodymyr Zelensky’s visit to Athens, marking a key step in European energy security and regional cooperation.

Details of the LNG Supply Agreement

The agreement, signed by Greece’s DEPA Commercial and Ukraine’s Naftogaz, will cover December 2025 through March 2026, ensuring a steady supply of US-origin LNG to Ukraine. The deal was completed with the support of U.S. Ambassador to Greece Kimberly Guilfoyle, highlighting the growing transatlantic energy partnership.

Greek Prime Minister Kyriakos Mitsotakis described the initiative as a “new secure energy artery, stretching from south to north, from Greece to Ukraine,” emphasizing its importance in reducing European reliance on Russian gas. Zelensky echoed the sentiment, calling it a “significant part of the comprehensive energy package we have prepared for this winter,” aimed at helping Ukrainian citizens endure ongoing attacks on energy infrastructure.

Strategic Importance for Ukraine and Europe

The supply of American LNG via Greece represents a decisive step toward energy independence from Russia. With the European Union recently approving a ban on Russian natural gas imports by 2027, this deal strengthens the continent’s energy diversification strategy.

Ukraine’s energy infrastructure has been heavily targeted by Russian forces, including power plants, gas production facilities, and thermal plants, which have suffered repeated strikes. The new LNG corridor through Greece will mitigate the impact of these attacks and support civilian heating and electricity needs during the winter months.

Infrastructure and Logistics

Greece serves as a critical gateway for American LNG in Southeastern Europe. Recent infrastructure projects, including the Trans-Adriatic Pipeline connecting Greece to Bulgaria, allow gas to flow northwards to Bulgaria, Romania, Moldova, Ukraine, Hungary, and Slovakia. Additionally, LNG storage facilities in Alexandroupolis, near the Greek-Turkish border, facilitate the reception and distribution of American gas, further weakening Russian influence in the region.

The agreement also aligns with U.S.-backed energy projects in Greece aimed at increasing regional LNG throughput and supporting Ukraine’s winter energy resilience.

Broader Cooperation Between Greece and Ukraine

Beyond energy, Greece has pledged to support Ukraine’s postwar reconstruction and strengthen defense cooperation, particularly in the maritime domain. Plans include the deployment of unmanned maritime systems (UAVs), joint exercises, and enhanced information-sharing on maritime threats, signaling deepening strategic ties between the two nations.