Natural Gas Stocks Withdrawal in Bulgaria increased to 15.60 GWh/d on Sunday March 29 from 15.30 in the previous day. Natural Gas Stocks Withdrawal in Bulgaria averaged 10.33 GWh/d from 2011 until 2026, reaching an all time high of 41.60 GWh/d in January of 2026 and a record low of 0.00 GWh/d in January of 2011.