Vattenfall AB

Producer & supplier of energy

PGE Group

Producer & supplier of energy

ENEA Group

Producer & supplier of energy

Kulczyk Holding S.A.

Industrial holding

Tauron Group

Producer & supplier of energy

PESC S.A.

Producer & distributor of heat

ZEC Bydgoszcz S.A.

Producer of electricity & heat

ZEC Łódź S.A (currently Dalkia)

Producer of electricity & heat

Elektrociepłownia Białystok S.A.

Producer of electricity & heat

ZE PAK S.A.

Producer of electricity & heat

Radpec S.A.

Generating and distribution of district heating