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Sơn La Dam is a concrete
gravity dam A gravity dam is a dam constructed from concrete or stone masonry and designed to hold back water by using only the weight of the material and its resistance against the foundation. Gravity dams are designed so that each section of the dam is ...
on the Black River in Ít Ong, Mường La District, Sơn La Province,
Vietnam Vietnam, officially the Socialist Republic of Vietnam (SRV), is a country at the eastern edge of mainland Southeast Asia, with an area of about and a population of over 100 million, making it the world's List of countries and depende ...
. It is the largest hydroelectric power station in
Southeast Asia Southeast Asia is the geographical United Nations geoscheme for Asia#South-eastern Asia, southeastern region of Asia, consisting of the regions that are situated south of China, east of the Indian subcontinent, and northwest of the Mainland Au ...
.


History

The project was proposed in the 1970s. Several studies were carried out, including by the Moscow Institute of Hydroelectric and Industry, Electricity and Power Distribution Company (Japan), Designing Research and Production Shareholding Company (Moscow) and SWECO (Sweden). In May 2000, the National Assembly of Vietnam postponed the decision due to lack of information on relocation and compensation plans and for feasibility studies for a scaled-down version of the dam. The project was approved by the National Assembly in December 2002. Construction of the dam began on 2 December 2005. On 17 December 2010, the first turbine was connected to the power grid. It was officially put into operation on 7 January 2011. The second turbine was put to operation on 10 May 2011, the third turbine on 20 October 2011, the fourth turbine on 22 December 2011, the fifth turbine on 30 April 2012, and the sixth turbine on 26 September 2012. The project was completed on 20 December 2012.


Description

The dam is an RCC Gravity Dam high and wide at the base. Its length is over . It was designed by Hydroproject of Russia. The power plant consists of six turbines with generating capacity of 400 MW each. It has a total capacity of 2,400 MW with an expected annual generation of 10,246 GWh. The total cost of the project was US$2 billion. The plant is owned by
Vietnam Electricity Vietnam Electricity (EVN; ) is the national and the sole public power company in Vietnam. It was established by the government of Vietnam as a state-owned company in 1994, and has operated officially as a one-member limited liability company s ...
. Turbines are installed by Lilama Joint Stock Co No 10.


Impact

The project required displacement of more than 91,000 ethnic minority people, the largest resettlement in Vietnam's history. Two pilot resettlement sites were established in 2003, and resettlement started in 2005.


References


External links


Son La Dam
- Vietnam National Committee on Large Dams {{DEFAULTSORT:Son La Dam Hydroelectric power stations in Vietnam Dams in Vietnam Buildings and structures in Sơn La province Dams completed in 2010 Dams on the Black River (Asia)