Obervogau Run-of-River Power Plant

VERBUND's power plant at Obervogau is a run-of-river plant situated on the river Mur and in the municipality of Obervogau in Styria.

Man in the kitchen

13,302 households

supplies the Obervogau power plant

Conscious of the environment

45,205 fewer
tonnes of CO2*

Fish bypass

Fish bypass since 2013


Ecology

Certified in accordance with ISO14001

*Source: ENTSO-E Production 2017

The Obervogau run-of-river power plant was built between 1974 and 1977. Four Kaplan turbines generate an annual average of around 59 GWh of electricity and can therefore supply about 13,300 households with electricity produced entirely from hydropower.

Image from the Location

Owner VERBUND Hydro Power GmbH
Operator VERBUND Hydro Power GmbH
Commissioning 1978
Type Run-of-river power plant
Country Austria
Region Styria
Waters Mur
Output 13 MW
Annual output 59,419 MWh
Turbine Kaplan
Connectivity Fish bypass

Ecology & environmental protection

Since 2013, the fish at the location of the Obervogau run-of-river power plant have enjoyed the use of the fish bypass that guides them from the tailrace to the headrace. It consists of a raw bed channel with a basin-type structure in the entrance area, followed by a near-natural bypass channel and a vertical slot pass at the exit. In total, the fish bypass has a length of around 2.4 km and overcomes a height difference of 7.9 metres.
Fish bypasses for the diversity of species
Turbines and generators: Two Kaplan turbines with a diameter of 4.15 metres have a nominal output of 6,500 kW each. The two three-phase synchronous generators have a rated output of 10,000 kVA at a nominal voltage of 6.3 kV.

Transformers: The 20,000 kVA machine transformer raises the generated energy to 110 kV before it is conducted via a tie-in to the line to the Leibnitz substation of STEWEAG.

Weir system: The three-field weir system consists of welded pressure segment gates with flaps; the segments are hydraulically controlled by two pull cylinders and the flaps by a central push cylinder.