Hinterrhein (GR): Overall renovation of power stations

Client
KHR - Kraftwerke Hinterrhein AG, Thusis
Consultant
Consortium LI-IM, Thusis (Laymeyer International GmbH and IM Maggia Engineering Ltd)
Period
2007–2017
Construction costs
CHF 300 million
Scope of services

Following stages in accordance with Swiss SIA standards:

  • Preliminary design
  • Tender documentation
  • Detailed design
  • Application design
  • Construction supervision
  • Overall construction management
Description

Total refurbishment of KHR Hinterrhein’s HPPs

Main Data
  • 3-stage group of power plants with installed power of 650 MW and pumping capacity of 90 MW
  • 4 powerhouses with Francis turbines:
    • Ferrera                                  3 x 63 MW
    • Bärenburg                            4 x 55 MW
    • Sils i.D.                                  4 x 60 MW
    • Thusis                                    2 x 20 MW
  • Hydromechanical equipment:
    • Spillway, bottom outlet, intake gates
  • Water transportation:
    • Pressure tunnel                          30 km
    • Pressure shafts                         1.7 km
    • Supply tunnels                            16 km
    • Access tunnels                           1.3 km
    • Water intakes                                     13
  • Reservoirs:
    • Preda Reservoir
    • Valle di Lei Reservoir
    • Ferrera Reservoir
    • Sufers Reservoir
    • Bärenburg Reservoir
  • Switchyards
    • in Ferrera and Bärenburg
    • controlled by Sils powerhouse
Hinterrhein (GR): Overall renovation of power stations (457 KB)