Natural Gas Stocks Withdrawal in Bulgaria increased to 28.60 GWh/d on Tuesday April 14 from 28.50 in the previous day. Natural Gas Stocks Withdrawal in Bulgaria averaged 10.40 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.