XePian Lower Dam Hydropower info by Hobo Maps- Go to Hydropower Projects Page - - Home

The Lower Xepian hydropower project is planned to be located on the XePian river near Ban HinLat (village), Sanamsai District of Sekong Province in southern Lao PDR. The project is about 40 km southwest of Attapeu town and about 80 km from Pakse District, Champasack Province.

In 2026 we aren't sure if construction has started as no activity is seen on these older satellite images. The only detailed info we have on this project is dated from 2014 and nothing more recent has been found to indicate the project has progressed since then.

The project coordinates are 14°44'56.0"N 106°27'04.0"E (14.748889, 106.451111) as seen in the satellite images below.

We show Lower Xepian HPP as on the Xepian (river) but Google Maps in 2026 shows that river as Vang Ngao. We suspect Google is wrong.

A concept image of what the dam and powerhouse may look like is below. From this image it seems the powerhouse and dam structure are at the same location and there will be a raised reservoir behind the dam on the XePian river.

Normal reservoir water level is 102 meters above sea level while dead water level is 101 meters above sea level.

Installed capacity : 14.8 MW from two Francis turbine-generator sets with annual average energy output estimate of 60 GWh.

Total investment cost estimate : $ 34.6 million USD

Vientiane Automation and Solution Engineering (VASE) is involved with this project in the planning stages and in 2026 has info on their web page HERE.

Not sure who the developers and owners of the project are.

Since year 2019, the XePian river has had much of its water flow diverted into the XePian-XeNamnoy (XPXN) hydropower project upriver from the planned XePian Lower hydropower project which has reduced the natural flow available for XePian Lower HPP power production. This may be a reason why we aren't seeing any recent activity reports on the web regarding advancement of the XePian Lower project. XPXN 2018 flood chart below shows this diversion from Xepian river to XeNamnoy Dam as part of XPXN project.

Xepian Lower hydropower project site is seen in central area of map below.