Installation of a renewable energy source with a total installed electrical capacity not higher than 50 kW, connected to a power grid with a rated voltage of less than 110 kV or a combined heat output not higher than 150 kW, with a total installed electrical capacity not higher than 50 kW.

• Act of 20 February 2015 on Renewable Energy Sources
  Place of publication: (Dz. U. z 2023 r. poz. 1436, z późn. zm.)