New construction of small hydropower plant Sigirino / Switzerland
High head power plant at the drinking water aqueduct Crana-Origlio with reservoir, penstock and power house with access road. The reservoir collects the spring water at an altitude of 1'006.20 m a.s.l. The spring water is fed to the power house via an underground penstock DN 350/400.
Main Data
- Reservoir at 1'006.20 m a.s.l.
- Dimension
- L = 10.65 m
- B = 7.50 m
- Penstock cast iron
- Ø = DN 350/400
- LTot = 1'723 m
- Power house 520 m a.s.l.
- QA = 0.2 m3/s
- HN = 475.50 m
- PA = 0.8 MW
- Horizontal Pelton turbine, 2 nozzles
- PN = 0.84 MW
- QN = 0.20 m3/s
- n = 1000 U/min
- Synchronous generator
- S = 1.0 MVA
- n = 1000 U/min
- Transformer
- PTR = 1.25 MVA
Client
Aziende Industriali di Lugano (AIL) SA
Consultant
IM Maggia Engineering Ltd, Locarno
Construction period
2012–2015
Construction costs
CHF 7.8 Mio.
Scope of services
Preliminary design, final design, tendering, construction design, construction supervision, commissioning.