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The Puwa Khola Hydropower Station is a run-of-river project located in Ilam District, Koshi Province, Nepal, harnessing the flow of the Puwa Khola, a tributary of the Mai Khola River. Commissioned on April 4, 2004 (2060-12-22 BS), it has an installed capacity of 6.2 MW generated by two horizontal-axis Pelton turbines rated at approximately 3.1 MW each. The plant operates with a gross and net head of roughly 304 meters and an average design flow of 2.5 m³/s. Water is diverted via a gravity weir into a 3.2 km long headrace tunnel, feeding a steel-lined penstock of 990 meters that supplies the surface powerhouse. Electricity is stepped up from 6.6 kV to 33 kV for transmission over a 5 km single-circuit line. Owned and operated by the Nepal Electricity Authority (NEA), the plant contributes to Nepal's hydropower capacity and has a generation license valid until 2101 BS. The annual design energy generation is approximately 48 GWh.
| Catchment Area | 125.1 km2 |
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| Maximum Net Head | 304m |
| Average Annual Discharge | 2.5 m3/s |
| Live Storage Volume | 2057m3 |
| Diversion Length | 30.4m Crest Length |
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| Type | Horizontal Pelton |
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| Number of Units | 2 |
| Rated Discharge | 1.25 m3/s |
| Rated Output | 3.3 MW |
| Rated Capacity | 3.7 MVA |
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| Power Factor | 0.85 |
| Number of Units | 1 (8 MVA, 6.6/33 kV, 3 Phase) |
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Application for Survey License
Survey License Approved
Application for Generation License
Under Construction
Live