Nussdorf (Vienna) Run-of-River Power Plant

VERBUND's power plant at Nussdorf is a run-of river power plant situated on the Danube and near the Danube inlet to the Danube canal on the border between the 19th and 20th Vienna districts.

* Source: ENTSO-E Production 2017

The famous Art Nouveau architect Otto Wagner designed an extraordinary welcome greeting for travellers approaching Vienna from the north along the Danube in the form of the Schemerl bridge in Nußdorf. Between them, the bronze lions guard not only a weir system to protect the Danube Canal from flooding but also a modern hydropower plant.

Twelve Matrix turbines use the gradient of the Danube Canal, which was made sufficiently attractive for generating energy only after construction of the Danube power plant Freudenau. One of them is the StreamDiver research turbine.

Nussdorf fish bypass formally opened

Project partner representatives at the opening of the Nussdorf fish bypass on the Danube Canal
The project partners of the Nussdorf joint power plant project came together at the opening: from left to right: Karl Gruber (Wien Energie), Hans-Peter Hasenbichler (via donau), Dorith Breindl (BMLFUW), Jörg Leichtfried (BMVIT), Günther Rabensteiner (VERBUND AG), Karl Heinz Gruber (Verbund Hydro Power GmbH), Peter Weinelt (Wiener Stadtwerke), Friedrich Zemanek (EVN Naturkraft GmbH)
Turbines and generators: Twelve hydro-matrix turbines with impeller diameters of 1.32 metres each and an average head of 3.8 metres have an output of 4.75 MW. Depending on the time of year, a volume of feed water of between 80 and 225 m³/s must be supplied to the Danube Canal, with up to 132 m³/s being possible. The generated energy is tapped at the Heiligenstadt substation of the regional supplier Wienstrom.

Weir system: The power plant does not have its own weir system, but instead, as a “flowed-over power plant”, flaps that are installed on the hollow body. At low water, these flaps are raised to reveal the weir body. During normal and high water, the flaps are flipped over to allow the river to flow completely over the weir body.