Mühlrading Run-of-River Power Plant

VERBUND's power plant of Mühlrading is a run-of-river plant situated on the river Enns and south of the town of Kronstorf in Upper Austria.

24,812 households

supplies the Mühlrading power plant

84,321 fewer
tonnes of CO2*

Fish bypass opened in 2016

Environmentally certified in accordance with ISO 14001

*Source: ENTSO-E Production 2017

The Mühlrading run-of-river power plant was built from 1947 and between 1977 to 1979. In 1974/75, the power plant control room underwent a remodel and complete redesign; between 1987 and 1991, all four turbines had to be converted and the generators replaced. They now generate an annual average of around 112 GWh of electricity.

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Owner	Ennskraftwerke AG
Operator	Ennskraftwerke AG
Commissioning	2016
Type	Run-of-river power plant
Country	Austria
Region	Upper Austria, Lower Austria
Waters	Enns
Output	25 MW
Annual output	111,400 MWh
Turbine	Kaplan
Connectivity	Fish bypass is in the planning process

Ecology & environmental protection

A fish bypass for the Großraming site is currently being evaluated. A feasibility study of ecological measures (German only) on the Enns was carried out in 2017 by the University of Natural Resources and Life Sciences Vienna (commissioned by: Office of the Provincial Government of Upper Austria, Office of the Provincial Government of Styria, Ennskraftwerke AG and VERBUND Hydro Power GmbH).

Responsible treatment of the environment

Turbines and generators: Four vertically mounted Kaplan turbines with 24 guide blades and 5 turbine blades each achieve a maximum output of 6,304 kW at a flow rate of 75 m³/sec. and a head of 8.45 metres. The directly coupled 7,500 kVA three-phase synchronous generators supply a nominal voltage of 6.3 kV.

Transformers: The 6.3 kV of energy generated is not raised in the power plant itself but conducted via an underground 6 kV line to the adjacent Ernsthofen substation of APG.

Weir system: All five weir fields are equipped with double hook gates with a closing height of 9.2 metres each. They can be controlled by two chain winches with electric shaft. Since the year 2000, the power plants on the Enns have been controlled from the control room in Steyr.