Natural Gas Stocks Injection in Poland remained unchanged at 0 GWh/d on Friday February 20. Natural Gas Stocks Injection in Poland averaged 51.77 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.