UNITECHHydropower

Our Projects

20.8 MW of sustainable energy infrastructure across eastern Nepal.

Upper Phawa Khola (5.8 MW)

Operational Asset (COD: 2081/01/08)

Capacity

5.8 MW

Gross Head

270 m

Annual Energy

33.05 GWh

Revenue

NPR 19.46 Cr/yr

The Upper Phawa Khola Hydroelectric Project is a run-of-river scheme on Phawa Khola in Pathivara Yangbarak, Dumrise Shrijangha, and Sikaicha, Taplejung. The asset reached commercial operation on BS 2081/01/08 following a PPA dated BS 2074/11/11. Design discharge is 2.6 m³/s with a gross head of 270 m (net 260.1 m), delivering 33.05 GWh annual energy under the contracted dry and wet season split. Civil works span the left bank of Phawa Khola from intake near Ose Dobhan to a surface powerhouse at Dumrise, with export to Amarpur substation on an 8 km, 33 kV link.

Weir
15 m length, free-flow weir
Intake
2 orifice intakes
Approach canal
RCC rectangular 40 m (approx. 2.6 × 1.33 m)
Desanding basin and headpond
2 bays (42 m × 4.3 m × 3.42 m)
Headrace pipe
4,357 m; diameter 1.4 m to 1.2 m
Surge tank
37.7 m height; 3 m diameter
Penstock
461 m; 1.1 m diameter; 8–16 mm thickness
Powerhouse
Surface powerhouse at Dumrise
Tailrace canal
60 m
Total alignment
~5 km

Iwa Khola (15.0 MW)

Under Detailed Study

Capacity

15.0 MW

Gross Head

400.10 m

Est. Revenue

51.15 Cr

IRR

13.22%

The Iwa Khola Hydropower Project is a feasibility-stage run-of-river development in Taplejung and Panchthar districts, planned for execution through Unitech Iwa Hydro Energy Pvt. Ltd., with Unitech Hydropower Company Limited holding a 51% ownership stake. The scheme is designed with a gross head of 400.10 m and design discharge of 4.36 m³/s, combining a 4,382 m headrace tunnel, headrace pipe, adit tunnel, and penstock with a vertical Pelton turbine and a 132 kV transmission line spanning 22 km. Feasibility materials indicate NPR 336.7 crore total project cost, NPR 51.15 crore first-year revenue, IRR 13.22%, and a benefit–cost ratio of 1.56.

Capacity
15.0 MW (feasibility-stage ROR)
Districts
Taplejung and Panchthar
Gross head
400.10 m
Design discharge
4.36 m³/s
Conveyance
4,382 m headrace tunnel; 503 m headrace pipe; 210 m adit tunnel; 750 m penstock
Turbine technology
Vertical Pelton
Transmission
132 kV, 22 km line
Energy mix (feasibility)
26.26 GWh dry (31.8%) + 60.67 GWh wet (68.2%)
Status
Feasibility study, IEE ToR, PPA / connection agreement process — not COD