Natural Gas Stocks Injection in Slovakia decreased to 78.13 GWh/d on Monday September 28 from 91.53 in the previous day. Natural Gas Stocks Injection in Slovakia averaged 87.17 GWh/d from 2011 until 2026, reaching an all time high of 378.61 GWh/d in May of 2019 and a record low of 0.00 GWh/d in January of 2011.