Son La Hydraulic - Hydropower Project

1. Stage: Technical Design
2. Consultant: Power Engineering Consultants Company No.1 (PECC1)
3. Project Owner: EVN
4. Project scale: Installed capacity: 2400MW
5. Appraisal time: 2005
6. Appraisal results: Requirement satisfaction

Son La Hydropower Plant is the largest one in Southeast Asia. The plant was commenced in 02/12/2006 and its unit No.I was proposed to be put in operation in 12/2010.

Son La hydropower Plant with proposed installed capacity of 2,400 MW will be connected to the national power network by four 500 kV-power line namely Son La - Hoa Binh, Son La - Nho Quan, Son La - Viet Tri and Son La - Soc Son. Son La 500 kV transformer station is proposed to be placed at Pi Toong area, 3 to 4 km away from the plant.

Parameters of the plant:

• Reservoir area: 224 km². Total storage capacity: 9.26 billion m³.
• Installed capacity: 2.400 MW, 6 units.
• Annual average power output:: 9.429 billion kWh.
• Project grade: special.
• Total investment cost: VND 42,476.9 billion (of which initial investment cost: VND 36,786.97 billion and interest in the construction time: VND 5,708 billion).
• Project owner: EVN
• Main contractor: Da river corporation
• Contractor of RCC dam: Da river Joint-stock Company No.9.