Introduce about
Xe Nam Noy 6

Namtuad Village, Paksong District, Champasak Province

The Xe Nam Noy 6 project is constructed on the Houay Makchan River(Phoukadep) on the Boloven Plateau in the southern of Laos. The Houay Makchan River, which is one of tributaries of the Xe NamNoy River, flow southwest on the tableland of Boloven Plateau and makes a U-Turn after dropping from the tableland at its southern rim. The project is designed to utilize a different elevation with drop of some 140m between the Houy Makchan and Xe Namnoy with a relatively short waterway. The dam site is located on the Boloven Plateau in Champassak Province and the power house outside the rim of the tableland. The installed capacity of the project is 5MW

  • $12M

    Project Cost

  • 5 MW

    Installed Capacity

  • 18.5 GWh

    Average Annual Energy

  • 5 M

    Dam Height

  • 18.5 GWh

    Reservoir Surface Area


Project Cost $12M
Shareholder CSE 100%
Installed Capacity 5 MW
Average Annual Energy 18.5 GWh
Maximum Turbine Discharge 3.24 m3/s
Rated Head 184 m
Turbine Type Vertical Francis x 2 Units
Offtaker EDL
Catchment Area 82.2 Km2
Annual Average Rain Fall 2,066 mm
Annual Average Discharge 390 m3/s
Reservoir Storage Capacity 8,000 m3
Reservoir Surface Area 0.1 Ha
Full Supply Level 622 m a.s.l
Minimum Operating Level 618 m a.s.l


Main Dam
Type Concrete Gravity
Height 5 m
Crest Lengt້ 30.3 m
Crest level 622 m a.s.l
Headrace Channel
Type Close Channel
Length 1,578 m
Longitudinal Gradient 0.20 %
Type Steel liner
Number of Pipe 2
Diameter 1.2 m
Length 1,015 m
Longitudinal Gradient 18.29 %
Type Ogee Gated
Number of Gate 1
Design Flood Discharge  3
Max. inflow peak 678 m³/s
Headrace Tunnel
Type  –
Design Discharge  –
Diameter  –
Length  –
Tailrace Channel
Type Concrete
Length 5 m
Elevation 184.6 m a.s.l
Dimension 20m x 30m


Installed Capacity 5 MW
Number of Unit 2
Turbine Type Vertical Pelton
Max Powerhouse Discharge 3.24 m3/s
Erection Floor Elevation 429 m a.s.l
Transmission Line
Substation Xenamnoy 1 Substation
Length 12 Km
Circuit Type Single Line
Conductor Size 150 mm2


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Map of Xe Nam Noy 6