Gas price in Europe at the opening is reduced by 9.4%.
The country is in the process of diversifying its energy sources.
The restriction is imposed from 11 to 14 September.
PGNiG recently signed a contract with ERU.
The countries also discussed threats to the energy security of Eastern and Central Europe from the Nord Stream 2 project.
Generation companies began to enter into contracts for the import of coal.
The total occupancy of European gas storage facilities (UGS) is 93.6%.