Altenwörth Power Plant on the Danube

Technical description

The Altenwörth power plant was built some 20 km downstream of Krems between 1973 and 1976, and was jointly financed by Energie AG Oberösterreich, Salzburg AG and VKW. Nine Kaplan machine sets with a bottleneck capacity of 328,000 kW make it the most powerful power plant on the Danube. The Traisen estuary was extensively renaturised. In the coming years, the power plant will be retrofitted with a near-natural fish bypass.


Lower Austria's longest fish bypass

Location of the new fish bypass at Altenwörth
Location of the new fish bypass and measures on the old course of the river.

Technical data:

Owner: VERBUND Hydro Power GmbH
Operating company: VERBUND Hydro Power GmbH                                 
Beginning of operation: 1976
Type:  Run-of-river
Country, State: Austria, Lower Austria
Waters: Danube
Capacity: 328 MW
Annual generation: 2.004.196 MWh
Turbines: Kaplan (9)
Fish bypass: in the planning process

Querschnitt der Turbine im Kraftwerk Altenwörth
Cross-section of the turbines at the Altenwörth run-of-river power plant

Project LIFE+ Traisen

Aerial image of the new course of the Traisen river with meanders

The redevelopment of the Traisen river mouth is Lower Austria's biggest land restoration project. A natural floodplain landscape with an amazing variety of species has been created over a distance of 9.4 kilometres

Project Life+ Traisen


Florian Seidl Florian Seidl

Media Spokesperson for Generation

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