Natural Gas Stocks Injection in Belgium decreased to 9.10 GWh/d on Friday September 5 from 17.64 in the previous day. Natural Gas Stocks Injection in Belgium averaged 16.89 GWh/d from 2011 until 2025, reaching an all time high of 90.17 GWh/d in April of 2013 and a record low of 0.00 GWh/d in January of 2011.