Ukraine's state energy company, Naftogaz, confirmed on Tuesday that it had repaid $1.45 billion (1.15 billion) of its outstanding natural gas bill to Russian company Gazprom.
It must now pay $1.65 billion before the end of the year, as part of an EU-brokered deal reached last week.
According to the agreement, Brussels is helping Kyiv finance deliveries in advance as requested by Gazprom.
The Russian energy company had halted natural gas deliveries to the eastern European country in June after its newly elected government failed to pay off previous debts.
The two parties had also argued over the price. Gazprom had wanted $485 per 1,000 cubic meters. Kyiv complained that the price was too high, noting that it was double that of the original offer to Kremlin-backed President Viktor Yanukovych before he was forced to step down earlier this year.
Under the accord reached last week, Ukraine will pay $378 per 1,000 cubic meters of gas through the end of 2014 and then $365 through the end of March.
The last-minute deal was seen as a victory for mediating EU Energy Commissioner Günther Oettinger, who was to leave office Friday, making way for a new European Commission and his Slovak successor, Maros Sefcovic.
Ukraine penalizes Russian airlines for flights to Crimea
Occupants continue to "bury" imported products in Crimea
Turkey continues to advance into Syria and Iraq
2016 Sakharov Prize winners named
Argentine Ambassador issued a statement on Crimea and Donbas
Ministry of Justice: Lustration is almost complete
Russia provided new data on downed Boeing
Ukrainian MFA protests against Putin's visit to Crimea
MFA compares trial of Chiygoz with Stalinist repression
School with children bombed in Syria
Hayser Jemilev denied early release
Ankara: The evidence to arrest Gulen is sufficient
Putin promised Crimeans ‘pipe & different life’ at year-end
NATO Ex-official: Putin feared in vain and annexed Crimea
NATO: Russia funding separatists in Eastern Ukraine
Turkish food entering Ukrainian market
WorldFood Ukraine gathers 125 companies from 13 countries
Ukrainian military to take part in US Marine Corps Marathon
Occupants fined Mejlis member in Crimea
Occupants try to show the scale of terrorism in Crimea
Kiev does not intend to leave demarcation line in Donbas
ATO Digest: Mariupol direction under fire
EU strengthens sanctions against RF with 5 countries
Sebastopol streets are swamp with litter
UK to deploy battalion with armored vehicles in Estonia