Garsten-St. Ulrich Run-of-River Power Plant

VERBUND’s Garsten-St. Ulrich power plant is a run-of-river power plant on River Enns in the municipality of Garsten, Upper Austria.

*Source: ENTSO-E Production 2017

The Garsten power plant was built between 1965 and 1967. The installation of an IT control system and the replacement of the three static exciter sets took place in 1999. Three vertical Kaplan turbines generate an annual average of approx. 163 GWh of electricity.
Turbines and generators: The two main machine sets and the residual water machine have vertically mounted Kaplan turbines, the three-phase synchronous generators are directly coupled. The main turbines have a nominal output of 15.5 MW. The residual water turbine has an expansion output of 1,943 kW and the associated generator a nominal apparent power of 2.35 MVA.

Transformers: Both main machine sets deliver the energy to the Steyr substation via a common transformer and an approx. 4 km-long 110 kV three-phase line. In addition to the 110 kV open-air switchgear, a 30 kV indoor switchgear was installed for supplying the locality from the residual water generator.

Weir system: The three weir fields are equipped with segment gates with weir flap. At a closing height of 12.80 metres, the lift height of the segments is 10.50 metres. The segment gates are controlled by hydraulic cylinders, the weir flaps with a vertical height of 2.75 metres via plungers (vertical hydraulic lift cylinders). Since the year 2000, the power plants on the Enns have been controlled from the control room in Steyr.