NG Dam and Powerhouse
Reservoir Full Supply Level | 455 metres above sea level |
Max Effective Storage Volume | 2,262 million cubic metres |
Roller Compacted Concrete Dam | 65 m high (upstream face); 480 m long |
Dam Discharge Capacity | 10,700 m3 (five radial gates) |
Net Head | 47 m |
Turbines | 2 x 30-MW Francis Units: 60 MW for domestic use |
TH Dam and Powerhouse
Reservoir Full Supply Level | 400 metres above sea level |
Reservoir Operating Volume | 29 million m3 |
Net Head | 230 m |
Concrete Gravity Free-Overflow Weir | 27 m high; 330 m long (weir and gates combined) |
Two Concrete-Lined Headrace Tunnels | Length: 5,289 m and 5,496 m |
Turbines | two 120-MW Francis Units (original project - turbines upgraded) one 220-MW Francis Unit (expansion project) |