New Ossasco Hydropower Plant / Switzerland
High head plant on the Ri di Cristallina stream with Tyrolean intake, sedimentation basin. Penstock and power house. At the altitude of 1'544.00 m a.s.l. it conveys the water from the stream to the underground sedimentation basin and then to the power house through a DN600 underground penstock.
Main Data
- Intake 1'544 m a.s.l.
- Sedimentation basin
- L = 17.46 m
- B = 2.5 m
- Penstock in cast iron
- Ø = DN 600
- LTot = 1035 m
- Power house 1'311.6 m a.s.l.
- Expansion of water volume, QA = 0.7 m3/s
- Level, HN = 220 m
- Expansion capacity, PA = 1.6 MW
- Pelton turbine vertical, 4 nozzles
- PN = 1.36 MW
- QN = 0.7 m3/s
- n = 1000 U/min
- Synchronous generator
- S = 1.8 MVA
- n = 1000 U/min
- Transformer
- PTR = 1.8 MVA
Client
CEL Bedretto SA, Bedretto
Consultant
IM Maggia Engineering Ltd, Locarno
Construction period
2010–2012
Construction costs
CHF 6.7 Mio.
Scope of services
Preliminary studies, preliminary design, final design, tendering, construction design, construction supervision.