Rosenau Run-of-River Power Plant

VERBUND's Rosenau power plant is a run-of-river plant on the Enns River in the municipality of Garsten in Upper Austria.

*Source: ENTSO-E Production 2017

The Rosenau run-of-river power plant was built between 1950 and 1953. The two main turbines and generators were replaced between 1993 and 1997. Two vertically installed Kaplan turbines generate around 146 GWh of electricity per year.
Turbines and generators: Two vertically mounted Kaplan turbines achieve a maximum output of 17,000 kW at a flow rate of 160 m³/sec. and a head of 12.20 metres. The two directly coupled 18,000 kVA three-phase synchronous generators supply a nominal voltage of 6.3 kV. The power plant’s own requirements are met by a 353 kW Francis turbine coupled with a 500 kVA three-phase generator.

Transformers: To raise the generated energy from 6.3 kV to 110 kV, the power plant has a 20,000 kVA machine transformer and a 24,000 kVA transformer. The electricity is conducted via two 110 kV lines each to Steyr and Großraming. The upstream power plants at Losenstein and Ternberg feed into the open-air switchgear at Rosenau. Three transformers are available to supply the power plant’s own requirements.

Weir system: All four weir fields are equipped with double hook gates with a closing height of 13.7 metres each. They can be controlled by two chain winches with mechanical shaft.