Nam Ou 6 Dam Hydropower Info by Hobo Maps - Go to Hydropower Projects Page - - Home

Nam Ou 6 hydropower project is located in Phongsaly District of Phongsaly Province, Lao PDR on the Nam Ou (river) about 283 km upriver from the junction with the Mekong River and 53 km upriver above the Nam Ou 5 dam site.

Nam Ou 6 dam images below:

The Nam Ou cascade hydropower project is a series of seven hydroelectric dams along the Nam Ou (river) in Phongsaly and Luang Prabang provinces of northern Lao PDR. The project is managed by PowerChina and the Lao government under a build, operate and transfer (BOT) agreement signed in April 2011. Some of the Nam Ou cascade projects have franchise periods of 25 years while others have 29 year periods.

The Nam Ou 6 project was developed as a joint venture of EDL GEN (15%) and Sinohydro (85%), a subsidiary of Power China, under a 25-year build, operate and transfer (BOT) agreement signed April 2011 and the project commenced commercial production in 2015.

The gross head of the project is 60 meters.

Construction of the project was managed by Sinohydro Corporation, a subsidiary of Power China.

Nam Ou 6 location is at coordinates 21°46'08.4"N 102°11'42.0"E (21.769000, 102.195000) as in image below:

Nam Ou 6 powerhouse is located in the dam structure and has three 60 MW Francis turbines with an combined output of 180 MW and ability to generate 726 GWh output per year.

The project has a 88 meter high rockfill dam with more than 80% of the dam structure filled with soft rock.

The gross head of the project is 60 meters.

The Nam Ou 6 reservoir has a catchment area of 5,480 square kilometers. The reservoir is 46.9 km long and covers an area of 17 square km. It has storage capacity of 409 milllion cubic meters with 246 million cubic meters active storage volume regulating capacity.

Nam Ou 6 control room image below:

Nam Ou 6 powerhouse image below:

Nam Ou 6 turbine-generator image below:

Nam Ou 6 project site satellite images below:

Nam ou 6 images below:

On 6 August 2026, Nam Ou hydropower projects 5, 6 and 7 were successfully connected to the China–Laos 500 kV Interconnection Station which enables surplus hydropower output from these three plants to be exported to China for the first time. The 500 kV Namor 3 substation is located in Namor district, Oudomxay Province of Lao PDR and since early 2026 has been linked further to the 500 kV Xishuangbanna power station in Jinghong city of Yunnan Province China.