PROJECT COST
$147.3 M
AVERAGE ANNUAL ENERGY
289.69 GWh
DAM HEIGHT
1,218 M
CATCHMENT AREA
279.8 Km2
Installed Capacity
60 MW
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- ORGANIZATION CHART
- GENERAL INFORMATION
- TECHNICAL STRUCTURE
- HYDRO-ELECTRO-MECHANICAL INFORMATION
- Project legislative documents
- CONTRACTOR
- Project milestones
Project Cost | $147.3 M |
Shareholder |
Chaleun Sekong Energy CO., LTD 30% Sekong Development CO., LTD 70% |
Installed Capacity | 60 MW |
Energy Generation | 289.69 Gwh |
Maximum Turbine | 12 m³/s |
Design net Head | 1,215.18 m |
Type of turbine | Vertical Pelton |
Off-taker | EVN |
Catchment Area | 279.8 km² |
Rain flow releases | 2,800 mm |
Inflow Average | 123×106 m3/s |
Reservoir | 14 M m³ |
Reservoir Surface Area | 93.6 km² |
Full supply level | 1,215 m a.s.l |
Min operating level | 1,189 m a.s.l |
Main Dam | |
Type | RCC |
Height | 58 m |
Crest Length | 182 m |
Crest level | 782.5 m a.s.l |
Water flow channels | |
Type | Inverted U-shaped section |
Length | 3,990 m |
Hills of channels | |
Open Channels | 2.5 m |
convert block | 2.5 m |
Penstock |
|
Type | Steel Lined Tunnel |
No of pipe | 1 |
Internal diameter | 2 m |
Length | 2,787.7 m |
– |
Spillway | |
Type | WES practical weir |
No of gate | 3 |
Design Flood Discharge | 701 m³/s |
Headrace Tunnel | |
Type | Inverted U-shaped section |
Flow rate | 3.91 % |
Internal diameter | 2.8m x 3.5m |
Length | 3,918 m |
Station 230 kW GIS (EGAT) / 115 kW AIS (Electricite du Laos) |
|
Height | 586 |
Ground size | 54m x 25m |
Powerhouse | |
Installed Capacity | 60 MW |
Number of Unit | 2 |
Turbine Type | SF30-10/3300 |
Max Powerhouse Discharge | 5.744 m³/s |
Superstructure dimensions | 581.7 m a.s.l |
230KV Transmission Line | |
Substation | Nam E-Moun |
Length | 41 Km |
Circuit Type | 1 |
Conductor Size | ACSR 300 |
Legal Documents
- On 21/07/2015 Signed a Memorandum of Understanding (MOU)
- On 17/02/2015Project Development Agreement (PDA) was signed
- On 14/09/2017The Feasibility study of the project was approved
- On 22/11/2016 Completed the report of Environmental and Social Impact Assessment (ESIA)
- On 22/11/2016Completed the Environmental and Social Management and Monitoring Plans (ESMMP)
- On 01/02/2021 Completed the Environmental and Social Management and Monitoring Plans-construction Phase (ESMMP-CP)
- On 14/08/2020 Complete basic design certification issued
- On 07/09/2020Completed the investment license
- On 30/09/2020Completed the enterprise registration
- On 11/11/2020Completed the ratification of the annex to the concession agreement with environmental, social and natural obligations (Annex C-CA)
- On 15/01/2019Completion of Environmental Certificate for Renewal of Social and Natural Environmental Management and Monitoring Plan (ESMMP)
- On 24/11/2021 Completed the environmental minimum water flow certificate
- On 07/05/2021 Completed the environmental certificate for the transmission corridor
- On 22/12/2021 Signed a concession agreement with the Government of the Lao PDR
-
EPC contractor: POWERCHINA Sinohydro Bureau 10., Ltd
-
OE: China Northwest Water Resources and Hydropower Construction Engineering Consulting CO., LTD
- On 21/07/2015 Signed a Memorandum of Understanding (MOU)
- On 17/02/2015Project Development Agreement (PDA) was signed
- On 14/09/2017The Feasibility study of the project was approved
- On 22/11/2016 Completed the report of Environmental and Social Impact Assessment (ESIA)
- On 22/11/2016Completed the Environmental and Social Management and Monitoring Plans (ESMMP)
- On 01/02/2021 Completed the Environmental and Social Management and Monitoring Plans-construction Phase (ESMMP-CP)
- On 14/08/2020 Complete basic design certification issued
- On 07/09/2020Completed the investment license
- On 30/09/2020Completed the enterprise registration
- On 11/11/2020Completed the ratification of the annex to the concession agreement with environmental, social and natural obligations (Annex C-CA)
- On 15/01/2019Completion of Environmental Certificate for Renewal of Social and Natural Environmental Management and Monitoring Plan (ESMMP)
- On 24/11/2021 Completed the environmental minimum water flow certificate
- On 07/05/2021 Completed the environmental certificate for the transmission corridor
- On 22/12/2021 Signed a concession agreement with the Government of the Lao PDR
- On 01/04/2023 First Impounding
Project progress
Start Construction Phase:
Model and Powerhouse
Survey the area
Paving the road
Building the tunnel
Construction start phase
Model and Powerhouse
Survey the area
Paving the road
Building the tunnel
Construction in 2022:
- Main Dam
- Diversion dam
- Diversion Tunnel
- Water Supplement Tunnel
- Sur shaft
- Penstock
- Powerhouse
- Mechanical and electrical equipment installation
- Transmission line construction
- Auxiliary projects
Construction in early 2023:
-
Powerhouse
-
Main Dam
-
Tunnel
-
Water Supply Tunnel
-
Pen Stock
-
Surge Tank
-
Saddle Dam
-
Transmission Line
Construction in mid 2023:
- Powerhouse
- Main Dam
- Penstock
- Surge Tank
- Saddle Dam