| Parameter | Details |
|---|---|
| Province | One |
| District | Solukhumbu |
| District headquarter | Salleri |
| VDCs/Municipality | Solu Dudhkunda Municipality- 1 & 2 |
| Project location – Longitude | 86° 35’ 52” to 86° 36’ 48” East |
| Project location – Latitude | 27° 35’ 10” to 27° 37’ 05” North |
| Type of scheme | Run of River (RoR) |
| Source river | Dudhkunda Khola |
| Parameter | Value |
|---|---|
| Catchment area at intake | 77.17 km² |
| Catchment area at powerhouse | 83.5 km² |
| Mean annual precipitation | 1882 mm |
| Monsoon Wetness Index | 1461 mm |
| Long term average flow | 6.18 m³/s |
| Design discharge | 4.61 m³/s (Q40%) |
| Compensation flow | 0.163 m³/s |
| 1 in 100 years return period design flood at intake | 49.79 m³/s |
| 1 in 100 years return period at powerhouse | 54.3 m³/s |
| Component | Parameter | Details |
|---|---|---|
| Weir | Type | Boulder lined free overflow weir |
| Crest level | 2914 amsl | |
| Height | 3 m from bed level | |
| Length of weir | 10 m | |
| High Flood Level | 2916.05 amsl | |
| Undersluice | Type | RCC Gated Type |
| Crest Level | 2910.5 amsl | |
| Nos. of gates | 1 no. | |
| Gate size | 2 m x 2 m | |
| Level of Operating Platform | 2917 amsl | |
| Intake | Type | Gated side orifice intake with coarse trash rack |
| Crest level of intake | 2912 amsl | |
| Nos. of opening | 3 nos | |
| Opening size | 2 m (W) x 1 m (H) | |
| Approach canal | Type | Box duct type canal |
| Length | 146 m | |
| Width | 2 m | |
| Overall depth | 2 m | |
| Longitudinal slope | 1 in 960 | |
| Gravel trap | Type | Gravity flushing type |
| Overall length | 4.5 m | |
| Width | 7.6 m | |
| Overall depth | 4.3 m | |
| Particle size to be trapped | 5 mm | |
| Slope | 1 in 25 | |
| Flushing flow | 1.38 m³/s | |
| Flushing gates | 1 No, 1 m (H) x 1 m (W) | |
| Settling basin | Type | Two chambers, gravity flushing type |
| Settling zone length | 55 m | |
| Inlet transition length | 25 m | |
| Single basin width | 6.5 m | |
| Overall depth | 5.4 m | |
| Particle size to be settled | 0.2 mm with 91% efficiency (Vetter) | |
| Design flow | 4.61 m³/s | |
| Flushing channel length | 30 m | |
| Inlet gates | 2 Nos, each 1.50 m (W) x 2 m (H) | |
| Outlet gates | 2 Nos, each 1.60 m (W) x 1.50 m (H) | |
| Flushing gates | 2 Nos, each 1 m (W) x 1 m (H) | |
| Headrace Pipe | Type | Surface, mild steel circular shaped |
| Length | 2930 m of 1.8 m internal diameter | |
| Thickness | 8 mm | |
| Design flow | 4.61 m³/s | |
| No. of anchor blocks | 44 | |
| Surge Pipe | Length | 60 m |
| Dia. and thickness | 1.8 m, 14 mm | |
| Upsurge Level | 2923.31 amsl | |
| Downsurge Level | 2901.27 amsl | |
| Penstock Pipe | Type | Surface, mild steel circular shaped |
| Length | Multiple diameters (1.6m-1.3m) as detailed | |
| Bifurcation | 12 m of 0.7m Dia., 14 mm Thick | |
| Design flow | 4.61 m³/s | |
| No. of anchor blocks | 20 | |
| Centre line of runner | 2596 amsl | |
| Tailrace | Length | 35 m |
| Size | 2 m (W) x 2 m (D) | |
| Slope of canal | 1 in 500 |
| Component | Parameter | Details |
|---|---|---|
| Turbine | Type | Pelton (2 units) |
| Rated output capacity | 6300 kW per unit | |
| Tail water level | 2594.5 amsl | |
| Turbine axis level | 2596 amsl | |
| Design flow | 2.305 m³/s per unit | |
| Rated speed | 750 rpm | |
| Efficiency | 91% | |
| Generator | Type | Synchronous brushless, 3Ø AC |
| Rated capacity | 7500 kVA each | |
| Rating | 50 Hz, 750 rpm | |
| Governor | Electro-Hydraulic | |
| Efficiency | 97% | |
| Transformer | Type | Step-up power transformer |
| Rating | 7500 kVA, 33/6.6 kV, 50 Hz | |
| Cooling type | ONAN | |
| Connection | Delta/star | |
| Efficiency | 99% |
| Parameter | Details |
|---|---|
| Transmission line type | 33 kV Single Circuit |
| Length | 24.58 km |
| Connection with grid | Proposed Lammane substation, Solukhumbhu |
| Installed Capacity | 12000 kW |
| Design Discharge | 4.61 m³/s |
| Minimum Release | 0.163 m³/s |
| Gross Head | 318 m |
| Net Head | 308.43 m |
| Dry Energy | 22,006,512 kWh (PPA) |
| Wet Energy | 48,473,754 kWh (PPA) |
| Total Energy | 70,480,266 kWh (PPA) |
