the kkg possess a pressurized water reactor delivered by the german kraftwerk union ag, a then subsidiary of siemens ag and now part of areva np. it contains 177 fuel assemblies, 48 of which are equipped with control elements. each fuel assembly can hold up to 225 rods, but only 205 (204 for the mox ones) are occupied by the fuel. the remaining 20 positions are reserved to the control rods. the reactor in operation contains a total of around 76 t of uranium. it works at 324 °c and 153 bar. the thermal power output achieves 3002 mw.