The Subsidiary Energetika is located in Zelezara, Skopje.

It has been designed and constructed in purpose of providing complete supply to all the consumers in RZS (Mines and Ironworks Skopje) with electricity, technological steam and hot heating water.

The construction of the Subsidiary Energetika has been completed in 1967 and in the same year has started with production, and as a type of fuel it uses natural gas.

It has steam boiler capacity is 96 MW, steam turbine is 12,5/15 MW and generator capacity is 75 MW.