PROJECT COST
$1,335 M
AVERAGE ANNUAL ENERGY
2,638.1 GWh
DAM HEIGHT
177 M
CATCHMENT AREA
13,856 Km2
Installed Capacity
650 MW
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- ORGANIZATION CHART
- GENERAL INFORMATION
- TECHNICAL STRUCTURE
- HYDRO-ELECTRO-MECHANICAL INFORMATION
- Project legislative documents
- Contractor
- Project milestones
In Progress
| Project Cost | $1,335 Million |
| Shareholder | PSG 32%, CSE 28%, EGCO 25%, EDL-GEN 15% |
| Installed Capacity | 650 MW |
| Average Annual Energy | 2,638.1 GWh |
| Maximum Turbine Discharge | 513.7 m³/s |
| Rated Head | |
| Turbine Type | Vertical Axis Francis |
| Offertaker | EGAT / EDL |
| Catchment Area | 13,856 Km² |
| Annual Average Rain Fall | 2,496 mm |
| Annual Average Discharge | 317 m³/s |
| Reservoir Storage Capacity | 3,009 Million m³ |
| Reservoir Surface Area | 93.6 Km² |
| Full Supply Level | 292 m a.s.l |
| Minimum Operating Level | 250 m a.s.l |
| Main Dam | |
| Type | PCC |
| height | 58 m |
| Crest width | 178.86 m |
| Crest level | 782.5 m a.s.l |
| Diversion Channel | |
| Type | Inverted U-shaped section |
| Length | 3,990 m |
| Tunnel Diameter | |
| Longitudinal Gradient | |
| Penstock | |
| Type | Embedded |
| Number of Pipe | 1 |
| Diameter | 2 m |
| Length | 2,787.7 m |
| Longitudinal Gradient | – |
| Spillway | |
| Type | Number of Gate |
| Design Flood Discharge | |
| Max. inflow peak | |
| Headrace Tunnel | |
| Type | WES practical weir |
| Diameter | |
| Length | |
| Tailrace Channel | |
| Type | |
| Width | |
| Length | |
| Height | |
| Switchyard 230 kV GIS (EGAT)/115 kV AIS (EDL) | |
| Type | |
| Dimension | |
| Powerhouse | |
| Type | Pit Powerhouse, 2 pits |
| Installed Capacity | 650 MW |
| Number of Unit | 3 |
| Turbine Type | Vertical Axis Francis |
| Max Powerhouse Discharge | 513.7 m³/s |
| Height | M A.S.L |
| 115KV Transmission Line EDL | |
| Substation | Pakxan-Khonsong |
| Length | 7.5 Km |
| Circuit Type | 7.5 Km Double Circuit; 1.5 Km Single Circuit |
| Conductor Size | 795 MCM |
| 500KV Transmission Line EGAT | |
| Substation | Nabong |
| Length | 154 Km |
| Circuit Type | ACSR/GA |
| Conductor Size | 795 MCM |
Project legislative documents
- On March 09, 2012 Signed a Memorandum of Understanding (MOU) with the Government of the Lao PDR
- Project Development Agreement (PDA) was signed on September 09, 2014
- Completed the report of Environmental and Social Impact Assessment (ESIA) on September 16,2014
- Completed the Environmental and Social Management and Monitoring Plans (ESMMP) On September 16, 2014
- The Feasibility study of the project was approved on February 22, 2016
- Signed a concession agreement (CA) with the Government of the Lao PDR on June 14, 2016
- On September 23, 2017, a power purchase agreement was signed with the Electricity Generating Authority of Thailand (EGAT).
- Completed the Environmental and Social Management and Monitoring Plans-construction Phase (ESMMP-CP) on June 19, 2018.
Total recipients and sub-recipients
In Progress
Construction contractor
In Progress
Important steps of the project
In Progress
Project milestones
Main components of dams:
-
- Main dam
- Water intake
- Headrace tunnel
- Powerhouse
- Switch yard
- Transmission line system
Main components of dams:
-
- Main dam
- Water intake
- Headrace tunnel
- Powerhouse
- Switch yard
- Transmission line system
Main components of dams:
-
- Main dam
- Water intake
- Headrace tunnel
- Powerhouse
- Switch yard
- Transmission line system
Main components of dams:
-
- Main dam
- Water intake
- Headrace tunnel
- Powerhouse
- Switch yard
- Transmission line system
