Pernegg Run-of-River Power Plant

The Pernegg run-of-river power plant is on the Mur River, southeast of Bruck an der Mur.

Man standing in the kitchen

26,681 households

supplies the Pernegg power plant

Environmentally friendly

89.125 avoided
tonnes of CO2*

* Source: ENTSO-E Production 2017

Image from the Location

Owner VERBUND Hydro Power GmbH
Operator VERBUND Hydro Power GmbH
Commissioning 1927
Type Run-of-river power plant
Country Austria
Region Styria
Waters Mur
Output 26 MW
Annual output 119,062 MWh
Turbine Kaplan
Connectivity Fish bypass
Environmental protection at VERBUND

Ecology & environmental protection

In addition to the technical upgrades carried out between 2010 and 2013, extensive ecological measures were also taken around the power plant: for example, seven near-natural islands with an area of 2,500 m2 were heaped up in the reservoir at the Zlatten weir and the banks of the headwater channel filled with rock. These measures offer new habitats for juvenile fish. In addition, the residual water flow of the Mur in the area of the power plant was increased. 
The fish bypass at Pernegg power plant, which was built in 1996, was also improved in the form of a near-natural pond pass as part of the modernisation project. The existing ponds and ditches were connected to form a side channel in order to create additional habitat. The fish bypass is 350 metres long and bridges a height difference of 11.7 metres between the reservoir and the water below the weir. 
Responsible treatment of the environment
Fish bypass

Technical description

Pernegg power plant, built between 1925 and 1927, is a diversion power plant on the Mur river. For more than 80 years, the power plant reliably supplied renewable electricity from hydropower until its renovation in 2010.
The generating water flows through the 2.3 km-long diversion channel to the Pernegg powerhouse. Since the modernisation of the plant between 2010 and 2013, the powerhouse has contained three sets of machinery with vertical shafts and a total bottleneck capacity of 25.5 MW. Each set consists of a Kaplan turbine and a three-phase synchronous generator. There is no other power plant on the Mur river in Styria with three Kaplan turbines, making Pernegg the power plant with the highest generation capacity on this waterway. Another Kaplan bevel gear turbine was installed next to the weir in 1996 to utilise the residual water volume to be discharged. A total of approx. 119 GWh of electricity is generated every year in this way.
Hydro consulting from VERBUND