Natural Gas Stocks Injection in Poland decreased to 3.88 GWh/d on Thursday March 12 from 3.96 in the previous day. Natural Gas Stocks Injection in Poland averaged 51.64 GWh/d from 2011 until 2026, reaching an all time high of 1852.66 GWh/d in September of 2014 and a record low of 0.00 GWh/d in January of 2011.