Natural Gas Stocks Inventory in Bulgaria decreased to 2.97 TWh on Sunday March 1 from 2.99 in the previous day. Natural Gas Stocks Inventory in Bulgaria averaged 3.77 TWh from 2020 until 2026, reaching an all time high of 6.14 TWh in October of 2020 and a record low of 0.59 TWh in April of 2021.