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) |