Schächen HPP

Construction of a small HPP on Schächenbach stream. Intake at tailrace channel of Bürglen HPP and outlet on the RUAG site before the pressure bridge. The HPP has been designed as a run-of-river power plant with the course of the pressure pipe starting in Klausenstrasse and then along the bank of the Schächen and crossing the Gotthardstrasse (west-east connection at Schächen roundabout). The pressure line borders and crosses the new route of the west-east connection on the RUAG site.

Main Data

  • Gross head: 77 m
  • Water flow: max. 6.5 m3/s
  • Pressure pipe GRP DN 1600, buried
  • Length of line: 2,500 m
  • Output approx.: 16.4 GWh
  • Capacity approx.: 4.2 MVA
  • 2 Francis turbines 2/3 and 1/3
  • 1 Ossberger turbine (winter operation)


KW Schächen AG


IUB Engineering AG

Construction period

From 2018

Construction costs

Approx. CHF 19 million

Scope of services

  • Feasibility study 2012
  • Concession project 2014
  • Design for construction 2016
  • Tendering 2017