Upper Ingwa Hydroelectric Project is a runoff the river type hydropower project situated at Ankhop VDC of Taplejung District of Province No. 1. The installed capacity of the project is 9.7 MW and contract energy is 65.73 GWh. of which 24.9 Wh. (37.88%) is the dry energy and 40.83 GWh. (62.12%) is the wet energy. The objective of this project is to generate electricity power and sell the energy to the national grid under a power purchase agreement signed between Nepal Electricity Authority (NEA) and the company. NEA is the sole government authority to purchase the power from this project. The power generated from this project shall be evacuated to the National Grid via Amarpur Substation under Mechi Corridor. This project will help to reduce load shedding in the Eastern Province-1 of Nepal. This is a Nepali currency denominated PPA project.
The Upper Ingwa Khola Hydroelectric Project is located on the Ingwa Khola, a tributary of the Kabeli river, in Taplejung district of Province 1 of Nepal. The project area lies just downstream of the confluence of the Phalame Khola and Ingwa Khola within the geographical coordinates of latitude : 27 16' 46" to 27 17' 20" North and longitude : 87 52' 44" to 87 55' 20" East. The intake and powerhouse sites lie in the Ankhop VDC at altitudes of 1085m. amsl and 885 m. amsl respectively. The proposed dam site lies at latitude 2716' 03" N and longitude 87 55' 02"E, Elevation 1084.50 m. The proposed powerhouse site lies at latitude 27 16' 02" N and longitude 87 51' 27"E, Elevation 888.70 m and located at about 3.04 km downstream of the dam site.
Province | Eastern |
Districts | Taplejung & Panchthar |
Head works Site | Yangruk & Sidingba VDC |
Powerhouse Site | Sidingba VDC |
geographical coordinates |
Barrage | 27° 16' 46"N, 87°53' 23"E |
Powerhouse | 27° 17' 20"N, 87°55' 20"E |
Name of River | Ingwa Khola |
Nearest Town | Nearest Town |
Type of Scheme | Run of the River |
Gross Head | 195.8 Meters |
Rated Net Head | 186.92 Meter |
Rated Net Head | 186.92 Meter |
installed capacity | 9.7 MW |
energy | 65.73 GWh |
4-Dry Months | 24.9 GWh(37.88%) |
8-Wet Months | 40.83 GWh(62.12%) |
Catchment Area | 211 ㎢ |
Mean Annual Discharge | 12.0 m3/s |
Fesign Discharge | 6.19 m3/sec |
1000 Years Flood | 797 m3/sec |
Type of Diversion Structure | 211 ㎢ |
Length of Weir | 12.0 m3/s |
Crest Level | 6.19 m3/sec |
Height of Overflow Weir | 797 m3/sec |
Number of Under sluice gates | 2 |
Type of Gate | Vertical Gate |
Size of Gate | 5m * 2m |
Type | Side Intake |
Size | 3.0m * 1.5 /2 No. |
Type | Side Intake |
Size | 3.0m * 1.5 /2 No. |
Type | Surface type Hooper section |
No. of Chamber | 2 |
Dimension (L*B*H) | 80m x 9.26 m x 3 m |
Particle Size to be settled | 0.15mm |
Type | E 350 Mild steel |
Length | 4,500 meter |
Diameter | 1.8 m |
Thickness | 10mm – 16mm |
Type | E 250 "0" Mild Steel |
Length | 255 meter |
Diameter | 1.8 - 1.2 m |
Thickness | 10mm – 16mm |
Type | Surface |
Size (L x B x H) | 40 m x 17.8 m x 27.6m |
Turbine Center Level | 940 m |
Type | Rectangular, RCC |
Length | 30 m |
Size (W x H) | 2.74m x 2.00 m |
Tail Water Level | EL.940 m |
Type | Horizontal Fransis |
Number | 2 |
Rated Output Capacity per Unit | 5 MW |
Efficiency | 92% |
Type | Synchronous brushless,30 AC |
Rated output capacity per unit | 7 MW |
Power factor | 0.85 |
Voltage | 11 KV |
Frequency | 50Hz |
No. of units | Two (2) |
Efficiency | 97% |
Type | Outdoor, Oil Immersed |
Rated capacity | 18 MVA three phase |
Voltage Ratio | 11/33 KV |
Voltage | 11 KV |
Efficiency | 99.00% |
Voltage Level | 33 KV Double Circuit |
Length (approx.) | 16 km |
From | Powerhouse |
To | Amarpur Substation |