Four sets of machinery with vertical shafts and a total bottleneck capacity of 231,000 kW (incl. auxiliary machine) are installed in the Roßhag powerhouse. Each machine set, which has a total height of about 25 metres, consists of a motor generator, a Francis turbine, a two-stage single-flow pump and a hydraulic converter. The energy is diverted via a 220 kV overhead line to the Mayrhofen outdoor switchgear.
Schlegeis reservoir: The final level of the Schlegeis reservoir, which has a capacity of 126.5 million m3, is located at 1,782 metres above sea level. The geologically favourable conditions made it possible to use a 131 metre-high, double-curved arch gravity dam with an unusually large crown length of 725 metres as the reservoir’s closing structure.