Ukraine’s state-owned energy utility, Naftogaz and Greece’s state-owned gas supplier, DEPA have signed a Letter of Intent (LOI) for natural gas deliveries to Ukraine, announced Naftogaz.

It is a non-binding agreement, and it targets supplies for the critical winter window from December 2025 to March 2026. The Kyiv Independent remarks that the Russian strikes on Ukrainian energy infrastructure left the country urgently seeking new equipment and 4.4 bcm of gas needed to get through the winter.

The deal focuses on supplying liquefied natural gas (LNG) sourced primarily from the United States. The exact volumes were not specified. Under the framework of the agreement, LNG volumes are expected to be transported through the Vertical Corridor, offered jointly by the gas transmission system operators (TSOs) of Greece (DESFA), Bulgaria (Bulgartransgaz), Romania (Transgaz), Moldova (VestMoldTransgaz) and Ukraine (GTSOU).

Greek infrastructure company Aktor Group and Greece’s state-backed gas supplier DEPA have recently established a new company focused on the procurement and import of LNG into Greece. The company is called Atlantic–SEE LNG Trade, with Aktor holding a majority 60 per cent stake. According to DEPA, the supply of US LNG will be facilitated through this joint venture. Last week, Naftogaz Group signed a 127 million euro EIB grant to buy natural gas for the coming heating season.

“This partnership opens another reliable direction for imports for the upcoming winter,” said Sergii Koretskyi, CEO of Naftogaz. “We are consistently and systematically expanding the geography of supplies to guarantee stable heating for Ukrainians and to strengthen the energy security of the entire region.”