The Dagachhu Hydropower Project is located on the left bank of the Dagachhu river in Dagana Dzongkhag. The project site is approx. 11km upstream the confluence of Dagachhu and Sankosh. The geogs Kana, Khebisa, Goshi, Tsendagang and Trashiding are within the project area.
The Dagachhu Hydropower project uses the water of the Dagachhu, which is a tributary stream of the Punatsangchhu that drains into the Brahamaputra in India. The project is a run-of-the-river power plant located between river kilometer 10.5 and 20.2 upstream the confluence with the Sankosh.
Salient Features
| Catchment Area | :676 square km |
| Water Resource | :Dagachhu |
| Specific Runoff | :41.1 l/s/sq. km |
| Annual Mean Flow | :27.8 cu.m/sec |
| Firm Flow ( 95% availability ) | :5 cu.m/sec |
| Mean Annual Yield ( usable ) | :733 mill cu.m |
| Weir Intake Elevation | :843.3 m |
| Desilter Elevation | :841.0 m |
| Tailwater Elevation | :537.0 m |
| Desilter Elevation | :841.0 m |
| Gross Head | :304.0 m |
| Net Head at full Load | :282.0 m |
| Design Flow ( maximum ) | :50.0 cu.m/s |
| Design Flow ( rated ) | :45.0 cu. m/sec |
| Installed Capacity | :114MW |
| Mean Annual Energy Production | :500 GWh |
| Energy Production ( 90 % dependable ) | :360 GWh |
| Turbine ( Pelton ) | :2 nos |
| Transmission Line 220kV ( Power House to Tsirang ) | :19 km |
Project Financing
| ADB-OCR Loan | :USD 51.00 million |
| OeKB, Austria-Credit Facility | :Euro 37.70 million |
| NPPF- Term Loan | :Nu. 600.00 million |
| Share Holders | |
| DGPC, Bhutan | :59% |
| Tata Power, India | :26% |
| NPPF, Bhutan | :15% |
| Project Cost | |
| Lot I-Civil Works | :Nu 3,875.00 mill |
| Lot II- E&M ment of DHPP | :Euro 54.99 mill |
| Contractors | |
| Lot I- Civil Works | :HCC, India |
| Lot II- E&M Equipment | :Alstom Hydro, Austria |
| & VA Tech Hydro Austria | |
