The gas transmission system operators of Bulgaria, Greece, Moldova, Romania, and Ukraine have developed a scheme for supplying U.S. liquefied natural gas (LNG) from Greece to Ukraine via the Trans-Balkan corridor, according to Romanian operator Transgaz.
"Bulgartransgaz EAD (Bulgaria), DESFA SA (Greece), Transgaz SA (Romania), VestMoldTransgaz SRL (Moldova), and Gas TSO (Ukraine) are jointly offering a route-based bundled product for natural gas deliveries from June to October 2025, which will facilitate the transportation of gas from Greece to Ukraine," the company’s press release states.
To increase the attractiveness of the route, the parties agreed on a unified transit tariff with a 25% discount. For the Ukrainian operator, the discount will be 46%.
The gas will be transported from Greece to Ukraine along the Trans-Balkan route via the following interconnection points: Sidirokastro/Kulata, Kardam/Negru Voda, Isaccea/Orlivka, and Căușeni/Hrebenyky.
A tender was announced on May 29 to supply 2.9 million cubic meters of gas per day to Ukraine in June. The participating country operators will conduct a single auction for allocating capacity at all interconnection points along the Trans-Balkan corridor.
Tenders for capacity sales for the upcoming calendar month will be held on the fourth Monday of each month. A single-price auction mechanism will be used for capacity allocation.
The press release explains that the scheme has been developed to prepare Ukraine for the heating season.
"By October 2025, Ukraine must inject about 5 billion cubic meters of natural gas into its underground storage facilities to prepare for the winter season and ensure the safety of vulnerable consumer categories," the statement notes.
The proposed transport package can only be used for gas deliveries to Ukraine. Previously, gas had not been delivered to the country via the Trans-Balkan corridor.
"It is expected that using the route will increase the utilization rate of operator infrastructure along the entire route, thereby raising revenues from the sale of previously unused capacity," the release states.
