Nam Ngum 2 Hydroelectric Power Project is a 615MW hydro power project. It is located on Nam Gnum river/basin in Vientiane, Laos. According to GlobalData, who tracks and profiles over 170,000 power plants worldwide, the project is currently active. It has been developed in a single phase. The project construction commenced in 2006 and subsequently entered into commercial operation in 2010. Buy the profile here.


The project was developed by SouthEast Asia Energy. CK Power Public, Electricite du Laos and RATCH Group are currently owning the project having ownership stake of 28.5%, 25% and 25% respectively.

Nam Ngum 2 Hydroelectric Power Project is a reservoir based project. The hydro reservoir capacity is 4,200 million cubic meter. The gross head of the project is 146m. The total number of penstocks, pipes or long channels that carry water down from the hydroelectric reservoir to the turbines inside the actual power station, are 3 in number. The penstock length is 295m. The penstock diameter is 6.2m. The project generated 2,300 GWh of electricity.

Development status

The project construction commenced in 2006 and subsequently entered into commercial operation in 2010.

Power purchase agreement

The power generated from the project is sold to Electricity Generating Authority of Thailand under a power purchase agreement for a period of 25 years.

Contractors involved

Toshiba Energy Systems and Solutions was selected as the turbine supplier for the hydro power project. The company provided 3 units of francis turbines, each with 205MW nameplate capacity.

Mitsui supplied 3 electric generators for the project.

For more details on Nam Ngum 2 Hydroelectric Power Project, buy the profile here.

About SouthEast Asia Energy

SouthEast Asia Energy Company Limited is engaged in generation of electricity through hydro power plant. It owns and operates 615-megawatt Nam Ngum II hydropower plant in Laos.

This content was updated on 20 July 2023

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GlobalData, the leading provider of industry intelligence, provided the underlying research used to produce this article.

This information is drawn from GlobalData’s Power Intelligence Center, which provides detailed profiles of over 170,000 active, planned and under construction power plants worldwide from announcement through to operation across all technologies and countries worldwide.