Ukraine has been estimated to possess natural gas reserves of over 1 trillion cubic meters, and in 2018 was ranked 26th among countries with proved reserves of natural gas. Its total gas reserves have been estimated at 5.4 trillion cubic meters. In 2021, Ukraine produced 19.8 billion cubic meters (bcm or Gm3) of natural gas. To satisfy domestic demand of 27.3 bcm that year, Ukraine relied on gas imports (2.6 bcm) and withdrawal from underground storage (4.9 bcm). Winter demand can reach 150 mcm per day. To meet domestic demand, Ukraine plans to increase domestic natural gas output to 27 bcm.