OverWatts Atlas Live map
Browse the atlas

Laos · asset class

Power Plants in Laos

Laos has 66 power plants mapped on the OverWatts open energy atlas — the 51st-largest fleet of the 155 countries that hold any, and 0.2% of the world's mapped total. Of these, 33 operating and 33 under construction or proposed. Operating generation capacity totals 12.5 GW across 33 utility-scale plants of 100 MW and above. The largest is Hongsa power station (1.9 GW).

The largest owner-operators are Electricite Du Laos (24), Sinohydro Corp Ltd (8) and Nam Ou Power (7) — Electricite Du Laos alone is named on 36% of them. Half of Laos's power plants in service predate 2019 (median commissioning year of the 33 with a known date), 22 came online in the past decade and the oldest still listed is Nam Ngum 1 hydroelectric plant, dating from 1971. 33 are in the pipeline, led by Ban Koum hydroelectric plant (1.9 GW), under construction. They account for 65% of every energy asset OverWatts maps in Laos.

See them on the map →Power Plants worldwide →
66
Power Plant in Laos
#51
of 155 countries
12.5 GW
Operating capacity
33
In construction / proposed

Operating generation capacity by fuel

On the interactive map

Open the interactive map →

Largest power plants in Laos

Who owns Laos's power plants

Counts an asset once per company named as its owner or operator; a joint venture counts for each partner.

When they were built

Median commissioning year 2019 · oldest Nam Ngum 1 hydroelectric plant (1971) · newest Nam Emoun hydroelectric plant (2025) · 33 of 66 carry a start date

Under construction & proposed

How Laos compares · power plants by country

Frequently asked

How many power plants are there in Laos?
OverWatts maps 66 power plants in Laos — 0.2% of the world's mapped total, the 51st-largest national fleet of the 155 countries with any.
What is the largest power plant in Laos?
Hongsa power station, at 1.9 GW.
How much power-generation capacity do Laos's power plants have?
About 12.5 GW operating across 33 plants, with a further 22.4 GW under construction or proposed. That covers utility-scale sites of 100 MW and above, so it sits below national installed capacity wherever distributed generation is large.
Who owns the power plants in Laos?
Electricite Du Laos is named as owner or operator on the most — 24 of 66 (36%). Next are Sinohydro Corp Ltd (8), Nam Ou Power (7) and China International Water & Electric Corp (3).
How old are Laos's power plants?
The median commissioning year is 2019, across the 33 in service with a known start date. The oldest still listed is Nam Ngum 1 hydroelectric plant (1971); 22 came online in the past ten years.
What new power plants are being built in Laos?
33 projects are under construction or proposed. The largest are Ban Koum hydroelectric plant (1.9 GW), Phonesack Xekong power station (1.8 GW) and Nam Ngum 1 (Liankham) floating solar farm (1.5 GW).

Other asset classes in Laos

Cement Plant 21Interconnector 5Coal / Uranium Mine 5Iron Ore Mine 3Grid Storage 1Chemical Plant 1

Power Plants in other countries

China 11,537United States 3,831India 1,675Brazil 879Spain 653Australia 615Philippines 489Russia 461Canada 452Vietnam 392Japan 387Germany 335