New HEPP Borgnone, artificial lake of Palagnedra, Centovalli

New hydroelectric minicentral with Kaplan turbine of approx. 3.2 MW located at the exit of the Cavergno-Palagnedra supply tunnel. Flow rates between 5 and 30 m3/s and fall between 6-16 m.

Main Data

Main features of the project:

  • External excavation in rock and loose ground up to 20 m in height with gradual lowering of the lake (total excavation volume 8'500 m3).
  • Excavation of new tunnels (access and supply) and caves
  • Enlargement of existing tunnels
  • Costruction in concrete (ca. 3600 m3) h gradual raising of the lake

Client

OFIMA - Officine Idroelettriche della Maggia SA, Locarno / Svizzera

Consultant

IM Maggia Engineering Ltd

Construction period

2016–2018

Construction costs

17.0 Mio. CHF

Scope of services

For civil engineering, electromechanics and hydromechanics of the following SIA phases, general planner's mandate:

  • 21 feasibility study
  • 32 preliminary design
  • 33 call for tenders
  • 41 call for tender
  • 51 construction design
  • 52 construction and supervision
  • 53 commissioning