Gas stocks in Ukraine's underground storage facilities declined by 38.6% to 9.044 billion cubic meters (bcm) since October 13, when the current heating season began, through February 11.

Ukraine withdrew 87.94 million cubic meters (mcm) from underground storage on February 11 and a total of 840.54 mcm on February 1 through February 11 (74,41 mcm/day on average), Ukrtransgaz, which operates the country's pipelines and storage facilities, said in a statement.

Withdrawals amounted to 2.102 bcm in January (67.8 mcm/day on average), 1.569 bcm in December (50.6 mcm/day) and 909.42 mcm in November (30.31 mcm/day).

Last year, Ukraine withdrew 46.27 mcm of gas from underground storage on February 11, when stocks amounted to 10.613 bcm. It withdrew 61.53 mcm on February 11, 2015, when stocks totaled 8.725 bcm.

As of February 11, 2017, daily imports of gas were 48.406 mcm, of which 41.312 mcm from Slovakia, 3.136 mcm from Hungary and 3.958 mcm from Poland. Ukraine has not imported gas from Russia since November 26, 2015.

Gas production in Ukraine on February 11 was 56.889 mcm, of which Ukrgazvydobuvannia produced - 40.991 mcm, Ukrnafta - 3.356 mcm and other companies - 12.542 mcm. Overall production in the first 11 days of February was 623.6 mcm.

Transit via Ukraine's gas transport system was 3.201 bcm in the period February 1-11, corresponding to a monthly rate of about 8.1 bcm.