Over the past week, world oil quotations have experienced serious volatility.
Naftogaz has not purchased natural gas from Russia for more than 1,500 days
Prices for European gas hubs began to decline sharply at the end of December.
Ukraine consumed more than 1 billion cubic meters of gas from underground gas storages in November.
Gas reserves in UGSFs have been increased by 27.1% for the year and reached a 10-year high.