The tender will be for "the development of a preliminary technical concept to determine the options for preparing and implementing a project involving the construction of offshore wind farms in the Baltic Sea", PKN Orlen stated.
An opening date or deadline for the tender has not been set.
Marcin Wasilewski, executive director of Energy at PKN Orlen, said: "Embarking on a wind farm project is in line with our strategic objectives and plans for Poland’s transition to a low-carbon economy.
"We hope the tender attracts strong interest from domestic firms."
Earlier this month, Norwegian energy company Statoil entered the Polish offshore market by acquiring a 50% stake in two Baltic Sea wind farms with a total capacity of up-to 1.2GW.
At the end of 2017, Poland had 6,397MW of installed wind capacity, all of which is onshore, according to the Global Wind Energy Council.