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Salient Features

Installed Capacity 870.250 MW
Net Capacity 861.548 MW
Annual Energy Generation 3050.438 GWh
Gross Head 912.5 m
Net Head 848 m
Design Discharge 114.6 m3/s
Plant Factor 40.20%
D&I Structure Type Asphalt Concrete Faced/core Rock-Fill
D&I Structure Height (above riverbed) 54.5 m
D&I Structure Crest 336 m
Reservoir Length 3106 m
Desander Type Twin Barrel, Underground
Headrace Tunnel Length 19.4 km
Headrace Tunnel Diameter 6 m
Penstock Number 4
Surge Shaft Type 2 No Double Stage x 3.0 m Diameter
Surge Shaft Diameter 770.85 m
Penstock Diameter 2.12 m
Length of Penstock (total of 4) 160 m
Powerhouse Type Underground Cavern
Turbine Type Pelton, 375 rpm
Turbine Number 4
Turbine Maximum Power 4 x 234.486 MW
Generator Number 4
Generator Rated Capacity 4 x 218.377 MW
Generator Voltage 18 kV
Transformer Type Single Phase
Transformer Secondary Voltage 500/√3 kV
Power Factor 0.8 lag, 0.9 lead
Transmission System Indoor GIS
Transmission Voltage 500 kV
Switchgear Type GIS - Breaker and a Half
Connection to outgoing transmission lines 500 kV GIL
Spillway Type Gated Spilway
Spillway Number 6
Spillway Type of Gates Radial
Tailrace Tunnels Number 2
Tailrace Tunnel Length 4.1 km