21.2 Provision for the shortage of CO2 emission allowances

As described in note 16 to these financial statements, as of 2020 the Group does not receive free emission allowances for electricity generation. The Group is only entitled to free allowances for heat generation. Accordingly, there occurred an increase in the estimate of the provision: as at December 31, 2020 it amounted to PLN 6,318 million (PLN 3,532 million at the end of the comparative period).