Vienna-Freudenau Run-of-River Plant

VERBUND's Freudenau plant is a run-of-river power plant on the Danube, within the urban area of the Austrian capital of Vienna.

Technical Description 

The Freudenau power plant was constructed from 1992 to 1998 using the wet construction method, this means on the riverbed. Inside the powerhouse, in the middle of the river, between the sluice and the weir facilities, six Kaplan bulb turbines have been built in. With a 7.5 m rotor diameter, the turbines are among the largest in Europe. Each one of them propels a DC coupled three-phase generator. Since 2011, the central control room in Vienna Freudenau has controlled all nine power plants on the Danube, with the exception of Jochenstein. The power plant produces around 1,052 GWh of electricity per year and also has a fish ladder. 

Diving operation in Freudenau

Technical data:

VERBUND Hydro Power GmbH
Operating company:  VERBUND Hydro Power GmbH
Beginning of operation: 1998
Country, State: 
Austria, Lower Austria
Waters:  Danube 
172 MW  
Annual generation: 
1,052,000 MWh 
Kaplan (6)
Fish bypass:

Saving beavers in Freudenau floodplain

Technical drawing of a weir field at VERBUND's Vienna Freudenau power plant
Freudenau power plant: cross-section of weir field