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Hydro Power Lower Sesan 2 Co., Ltd (abbreviated as Sesan-II), is a joint-venture of China Huaneng Group and Royal Group of Cambodia.
The 400 MW hydropower project, Sesan-II, is the largest hydropower project in Cambodia, located in Se San District, Stung Treng Province. The construction was executed under the approval of the Ministry of Mines and Energy (MME) in January 2014. The project was put into operation in 2017 and fully generated power in December 2018. The hydro station is equipped with eight turbines to generate energy. The project was built with the approximate cost of about USD$781 million and covers the land area of 9,854 ha of government concession land. The project takes the form of BOT (Build-Operate-Transfer), with a commercial operation period of 40 years, then the ownership will be transferred to Cambodia. The dam was constructed with a length of 6.5 kilometers, one of the longest dams in Asia and the largest hydro project in Cambodia. The dam has the capacity to reserve up to 2.72 billion m3 of water. This hydropower station could generate and supply clean energy (1970 GWh annually) which significantly contributes to Cambodia’s national power grid and reduce local power shortage.
In 2020, Sesan-II hydropower station generated 1696 GWh of electricity, accounting for nearly 20% of Cambodia’s total domestic electricity generation.
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