Wallsee-Mitterkirchen Run-of-River Plant

VERBUND's Wallsee-Mitterkirchen power plant is a run-of-river plant situated on the Danube between the towns of Mitterkirchen in Upper Austria and Wallsee in Lower Austria.

In this agricultural region of the Mostviertel and Mühlviertel, the power plant is not only an important supplier of electricity generated entirely from hydropower, but also offers cars, pedestrians and cyclists an important crossing over the Danube. 

The power plant impresses with its output of 210 MW. This capacity is currently being further improved by VERBUND through investments in increasing efficiency. The goal of the complete overall is not only to extend the service life, but also to renew the turbine, generator (rotor, stator) incl. switchgear, transformer and the cooling system of the machine set. Thanks to the latest state of technology, the machine set will also run more efficiently. Until 2024, one generator will be replaced every year, which is expected to increase generation by 12 million kilowatt hours through increased efficiency. 

An open-field solar installation supplements generation on the power plant site. The installed capacity is 17 megawatts. To support the grid frequency, the “Blue Battery” has up to 10 megawatts of spare capacity available – fed from the electricity of the Danube power plant Wallsee-Mitterkirchen.

Additionally, a new PV facility on the site of the Danube power plant Wallsee-Mitterkirchen, which covers an area of 3 hectares and has a maximum output of 1.7 MW, generates as much as electricity as is consumed by about 600 households every year. The panels align themselves automatically to the sun to supply the optimal electricity yield.

Welcome to the innovative energy location of Wallsee-Mitterkirchen!

Please accept marketing-cookies for this website displaying YouTube-videos.

Blue Battery

The “Blue Battery” has been supplying electricity from hydropower in fractions of a second since September 2020. 61,000 lithium-ion battery cells supply a total output of 10 MW (8 MW primary control plus 2 MW power for load management). Fluctuations in the grid can be balanced with this at short notice. The battery is charged with electricity from the Danube.
Blue Battery in operation

Rotor replacement at the Wallsee-Mitterkirchen power plant

Please accept marketing-cookies for this website displaying YouTube-videos.
Please accept marketing-cookies for this website displaying Google Map.

Image from the Location

Owner VERBUND Hydro Power GmbH
Operator VERBUND Hydro Power GmbH
Commissioning 1968
Type Run-of-river power plant
Country Austria
Region Upper Austria
Waters Danube
Output 210 MW
Annual output 1,342,260 MWh
Turbine Kaplan
Connectivity Fish bypass
Environmental protection at VERBUND
The Wallsee-Mitterkirchen power plant was built between 1965 and 1968 in a large trench next to the original bed of the Danube. The “dry construction method” used in the construction of this power plant became the model for the rapid and economical expansion of hydropower on Austria’s rivers. The power plant is equipped with a fish bypass.
Responsible treatment of the environment
Fish bypass


The powerhouse has six main sets of machinery dating to 1968, each consisting of a Kaplan turbine with vertical shaft and a three-phase synchronous generator with a shielded design. The generators have a nominal power of 42,500 and 44,000 kVA, respectively. 
Weir system: The fields of the weir system are equipped with double hook gates. 


The lock gates at the upstream end were designed as a guillotine gate with double hook contactor, the lock gates at the downstream end as bolt gates with a back wall made of sheet metal.

Hydro consulting from VERBUND