Rabenstein Run-of-River Power Plant

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

The run-of-river power plant was built between 1984 and 1987, consists of two Kaplan bulb turbines and generates approximately 65 GWh of electricity annually. In 2019, VERBUND started implementing digital applications for hydropower at the Rabenstein site. The power plant is a test lab for "Hydropower 4.0" – the use of digital methods and technology for the generation of electricity from hydropower.

Digital power plant Rabenstein: Hydropower 4.0

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Owner	VERBUND Hydro Power GmbH
Operator	VERBUND Hydro Power GmbH
Commissioning	1987
Type	Run-of-river power plant
Country	Austria
Region	Styria
Waters	Mur
Output	14 MW
Annual output	65,981 MWh
Turbine	Kaplan
Connectivity	Fish bypass

Ecology & environmental protection

Fish bypass: In 2002, a fish ladder with a length of approx. 200 metres was installed at the Rabenstein power plant. The total height to overcome at low water is approx. 9 metres. The fish bypass consists of a basin pass followed by a near-natural pond pass. <o:p></o:p>

Fish bypasses safeguard the variety of species

Powerhouse: Each of the two horizontally installed machine sets consists of a Kaplan bulb turbine with a nominal output of 7,000 kW and a three-phase synchronous generator with a nominal output of 7,600 kVA, as well as two block transformers with a nominal voltage of 4.5/20 kV.

Weir system: The hydraulically operated weir closures have segments with flaps.