Feldkirchen Run-of-River Power Plant

The Feldkirchen power plant is located north of Rosenheim in the municipality of Schechen (Bayern am Inn). The hydropower plant generates valuable green electricity for about 45,000 households.

Man in the kitchen

45.335 households

supplies the Feldkirchen power plant

Environmentally friendly

151.507 avoided
tonnes of CO2*

werden durch das Kraftwerk Enns vermieden.

VERBUND attaches great importance to safety, also in the event of flooding. The power plant was first commissioned in 1970, since when numerous measures have been put in place to reduce the effects of floods and to protect the immediately adjacent communities in the best possible way. 
 
* Source: ENTSO-E Production 2017
 

Image from the Location

Owner VERBUND Innkraftwerke GmbH
Operator VERBUND Innkraftwerke GmbH
Commissioning 1970
Type Run-of-river power plant
Country Germany
Region Bavaria
Waters Inn
Output 38 MW
Annual output 204,063 MWh
Turbine Kaplan
Connectivity Fish bypass

Each hydropower plant on the Inn comprises:

  • the machinery hall with the turbines,
  • the weir systems for flood release,
  • the dams and dikes for the accompanying flood protection
  • and – if inland drainage has been disrupted by the dams – the pumping stations and ditches, which guarantee agricultural use that existed before construction of the barrage.

 The VERBUND hydropower plants on the Inn are therefore not only plants for generating electricity but also ensure 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 specimen – management of the gravel banks in the near-natural fish bypass or below the weir is additionally carried out. 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.

The power plant at Feldkirchen has been passable since 2015. To make it easier for fish to find the fish bypass connected to the Hammerbach, which flows parallel to the Inn, special river structures were built in the Inn. A gravel substrate was also brought in for spawning grounds, as well as nutrient-poor grassland sites, crude soils, ponds and embankments on the banks, e.g. for the local yellow-bellied toad. 

The gravel bed and juvenile fish habitat at the location are managed in cooperation with the Technical University of Munich.

 
Fish bypass

Technical Description

The Feldkirchen power plant consists of a three-field weir system, the powerhouse with three sets of machinery and a 110 kV outdoor switchgear.
Each set consists of a Kaplan turbine and a directly coupled umbrella-type generator.

The weir system has four openings with a width of 15 metres each. The weir gates consist of wheel-mounted gates with flash weir (tilting gates).  
The main inflow in the backwater area is the Mangfall. The dams on the left bank of the Inn near Schechen and along the Hammerbach and Rott rivers provide flood protection for the Rosenheim area. The Mühltal flood defence and the Vogtareuth dam were built on the right bank. 

Flood hollows in the area of the foreshore bring about a lowering of flood levels by increasing the discharge cross-sections. No water flows through them at low water. 

Hydro consulting from VERBUND