PROJECT COST
$140.18 M
AVERAGE ANNUAL ENERGY
208 GWh
DAM HEIGHT
65 M
CATCHMENT AREA
646 Km2
Installed Capacity
54 MW
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- ORGANIZATION CHART
- GENERAL INFORMATION
- TECHNICAL STRUCTURE
- HYDRO-ELECTRO-MECHANICAL INFORMATION
- Project legislative documents
- Contractor
- Project Phases
In Progress
| Project Cost | $140.18 Million |
| Shareholder | CSE 100% |
| Installed Capacity | 54 MW |
| Average Annual Energy | 208 GWh |
| Maximum Turbine | 60.9 m3/s |
| Discharge | 100.7 m |
| Rated Head | 100.7 m |
| Turbine Type | Vertical Francis x 3 Units |
| Offertaker | EVN |
| Catchment Area | 646 Km2 |
| Annual Average Rain Fall | 2,576 mm |
| Annual Average Discharge | 28.9 m3/s |
| Reservoir Storage Capacity | 471 Million m3 |
| Reservoir Surface Area | 39 Km2 |
| Full Supply Level | 541.8 m a.s.l |
| Minimum Operating Level | 521.0 m a.s.l |
| Main Dam | |
| Type | Gated concrete gravity (RCC) |
| Maximum height | 65 m |
| Crest Lenght | 494 m |
| Crest elevation | 521 m a.s.l |
| Full Supply Level (FSL) | 541,80 m a.s.l |
| Minimum Operation Level (MOL) | 521,00 m a.s.l |
| Power Intake | |
| Minimum Operation Level (MOL) | 521.00 m.a.s.l |
| Approach channel invert level | 505.25 m.a.s.l |
| Intake invert | 506.50 m.a.s.l |
| Gate opening (W x H) | 4.2 m x 5.3 m |
| Penstock | |
| Type | Steel Lined Tunnel |
| Number of Pipe | 1 |
| Internal diameter | 4.2 m |
| Length | 322 m |
| Slope | 11% and 2% |
| Gates dimensions | 11.0 m wide x 14.8 m high |
| Freeboard (radial gate) | 0.30 m |
| Design Flood Discharge | 5,000 m3/s (1,000-year) |
| Max. inflow peak | 11,800 m3/s |
| Spillway | |
| Type | 4 radial gates |
| Number of Gate | 1/3 Nr (one set 2x800kN and Three sets 2x3200kN |
| Design Flood Discharge | 4860 m3/s |
| Headrace Tunnel | |
| Type | Concrete Lined Tunnel |
| Length | 322 m |
| Internal diameter | 4.2 m |
| Slope | 11% and 2% |
| Tailrace Channel | |
| Type | Open Channel |
| Length | |
| Switchyard 115 kV | |
| Type | AIS |
| Voltage level | 115 kV |
| Powerhouse | |
| types | Vertical Francis |
| Number of Unit | 3 Units |
| Installed Capacity | 3 X 18 MW = 54 MW |
| Gross head | 103.6 M |
| Net head (at design flow) | 100.7 M |
| Tailrace | |
| Connecting channel | Open in rock |
| Riverbed | 435.0 M.A.S.L. |
| Tail water level (TWL) | 438.2 M.A.S.L. |
| Transmission Line | |
| Type | Double Circuit, 1×210 Mm2 ACSR |
| Voltage level | 115 KV |
| Length | 14.5 Km |
| EDL grid connection point | Nam Kong 2 Switchyard |
Legal Documents
- Signed a Memorandum of Understanding (MOU) with the Government of the Lao PDR in August 2009
- Project Development Agreement (PDA) was signed in June 2016
- The Feasibility study of the project was approved in October 2017
- Completed the report of Environmental and Social Impact Assessment (ESIA) in November 2017
- Completed the Environmental and Social Management and Monitoring Plans (ESMMP) in December 2017
- Completed the Environmental and Social Management and Monitoring Plans-construction Phase (ESMMP-CP) in December 2020
- Completed the preparation of biomass removal plans and approved the plans for December 2021
- Signed a power purchase agreement (PPA) with the Electricity of Vietnam (EVN) on January 04, 2020
- Signed a concession agreement (CA) with the Government of the Lao PDR on September 2016 and completed the amendment of the concession agreement in June 2019
Contractor
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Civil construction work
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waterways mechanical construction works
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electro-mechanical constructions
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Project Owner: Chaleun sekong., co.LTD
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Construction design company: AFRY (Thailand) Ltd
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Consulting company: AFRY (Thailand) Ltd
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Civil work contractor: CHINA GEZHOUBA GROUP CO., LTD (CGGC)
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Supply and installation of waterway machinery: WHESSOE SDN BHD
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Supply and installation of electromechanical: ANDRITZ HYDRO PRIVATE LTD
Project Phases
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In 2010 A Feasibility Study by JSC
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In 2015 Basic Design of the project by JSC
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In 2016, the project was handed over to Chaleun sekong., co.LTD
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In 2017 A Feasibility Study and Tender Design by Poyry
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In 2018 The construction was started by CGGC, which the consulting by Poyry
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In 2021, The construction by CGGC will be completed and the generator installed by Andritz.
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31/10/2021 All construction of Nam Kong 3 was done.
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29/11/2021 Handover Ceremony of Nam Kong 3 Hydropower Project.
Project milestones
Progress of project construction
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Pioneering phase
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Survey the area
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Survey and measure water quality
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Paving the road
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Compensate for area damage to people
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Start construction
Overall construction phase 2019
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CVC and RCC Concrete Mixing plant
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Field Laboratory
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Repair shop
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Main dam
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Headrace Tunnel
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Powerhouse
The Overall construction phase 2020
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Main dam
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Water intake
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Headrace tunnel
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Powerhouse
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Switchyard
The Overall construction phase 2020
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Main dam
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Water intake
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Headrace Tunnel
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Powerhouse
-
Switchyard
The Overall construction phase 2021
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Main dam
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water storage
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Water intake
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Headrace Tunnel
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Powerhouse
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Switchyard
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Joint station
