VERBUND's power plant at Perach is a run-of-river plant situated on the river Inn above the Alz estuary in Bavaria.
The Perach power plant was built between 1974 and 1977 and was the first power plant to be designed from the outset for fully automatic operation and monitoring by the control room in Töging. The Perach power plant generates an annual average of 128 GWh of environmentally friendly electricity from hydropower.
Owner: VERBUND Innkraftwerke GmbH
Operator: VERBUND Innkraftwerke GmbH
Commissioning: 1977
Type: Run-of-river power plant
Country: Germany
Region: Bavaria
Waters: Inn
Output: 19 MW
Annual output: 128,400 MWh
Turbine: Kaplan
Connectivity: Fish bypass is in the planning process, Fish bypass
Weir system: The weir system consists of four weir openings and three turbine piers.
Turbines and generators: Each turbine pier is equipped with a Kaplan turbine with vertical shaft and mounted generator. The Perach power plant generates an annual average of 128 GWh of electricity.
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Since 2017, the Perach run-of-river power plant has also been equipped with a fish bypass.
Each hydropower plant on the Inn comprises:
The VERBUND hydropower plants on the Inn are therefore not only plants for generating electricity but also improve flood protection in the region. VERBUND also focuses on improving the ecological conditions at individual sites and on restoring natural river landscapes. We implement a large number of measures in this regard, such as:
creating continuity of flow with fish bypasses, giving structure to bodies of water, connecting tributaries. In order to guarantee habitats for fish with all their habitat requirements – from spawn to adult specimens – management of the gravel banks is additionally carried out in the near-natural fish bypass or below the weir. Another important component for the long-term conservation of fish fauna is the maintenance of sediment continuity through sediment management, a topic of the EU Water Framework Directive (WFD) for species conservation in man-made rivers.
