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Thac Ba Hydropower Plant

Thac Ba Hydropower Plant is constructed on Chay River in Yen Binh district, Yen Bai province. This is the first hydropower plant of Vietnam which was assisted by the former USSR, now is the Republic of Russia

Thac Ba Hydropower Plant
 



Thac Ba Hydropower Plant is constructed on Chay River in Yen Binh district, Yen Bai province. This is the first hydropower plant of Vietnam which was assisted by the former USSR, now is the Republic of Russia.






The plant was commenced on August 19th 1964 and inaugurated on October 5th 1971.
The first unit was commissioned on October 5th 1971.

The second and third units were commissioned on March 10th 1972 and May 19th 1972, respectively.




Salient parameters of the plant are as follows:

- Catchment area: 6,430km2

- Installed capacity: 120MW.

- Maximum height of dam:  48m.
- Dam length: 657m.
- Dam volume: 1.33 million m3.
- Effective storage capacity of the reservoir: 2,160,000,000 m3.
- Total storage capacity of the reservoir: 2,490,000,000 m3.
- Reservoir surface area corresponding to normal water level: 235km2.
- Maximum length of the reservoir: 60km.
- Normal water level: +58.0
- Flood water level 0.01%: +61.0
- Flood water level 0.1%: +59.65
- Flood water level 1%: +58.85
- Dead water level: +46.0
- Water level prior to flood: +50.3
- Maximum flood release capacity: 3,650m3/s.

- Average electricity output: 400 million kWh/year.




(Thu Huyen - www.vncold.vn)




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