KYIV, March 26 - Ukraine offered about 12 billion cubic meters in underground gas storage facilities to European energy companies to prevent possible gas supply disruption in January 2020, Ukrtransgaz, the state gas shipper, said Monday.

This comes days after Ukraine has decided to increase its own reserves by 3 Bcm to about 20 Bcm ahead of winter amid expectations that Gazprom would suspend gas shipments.