Huoi Quang is a 520 MW hydro power station in Son La, Vietnam. It is operated by Vietnam Electricity (EVN). Based on reported annual generation of 1,904 GWh, it can supply roughly 544k homes. It ranks #81 of 298 Vietnam power plants by installed capacity. Commissioned in 2015, it is around 11 years old — relatively modern. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, hydro supplies about 33.0% of Vietnam's electricity; the national grid averages 461 gCO₂/kWh (45.4% low-carbon) (2025).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id WRI1030905.
Data status
Known data
Calculated from dataset
Not available
Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.
Data provenance
Source of the capacity and fuel values:
capacity: GEM · 2026 · L100000604022; fuel: WRI GPPD
In context: how this plant compares
At 520 MW, Huoi Quang is well above the median hydro plant in Vietnam (20 MW). Technically it is described as conventional storage. Hydropower converts the energy of falling or flowing water into electricity; output depends on rainfall and reservoir level, and large dams also provide grid balancing and storage.
Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.
Key facts
- Load factor
- 42%, from 1,904 GWh of reported generation; the median for 152 hydro plants in Vietnam that report generation is 46%
- Share of Vietnam hydro capacity
- 3.0% of 17,313 MW across 174 plants in this dataset
- Age among peers
- 145 of 162 dated hydro plants in Vietnam are older
Calculated from the capacity and generation records in this dataset (WRI Global Power Plant Database (CC BY 4.0)).
Capacity vs largest hydro plants in Vietnam
Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).
Owner
Operated by Vietnam Electricity (EVN). All plants by this company →
Local climate & thermal context
This hydro plant converts the energy of falling or flowing water through hydro turbines. It sits in a humid subtropical climate (Köppen Cfa) — Northern Hemisphere, latitude 21.7°N — which shapes how much energy it can produce and how its output varies through the year.
Monthly mean temperature
Heating degree-days here run 95% below the median power plant in this dataset — a proxy for how much extra energy heated equipment must replace through its surfaces in winter.
Climate heat-demand index: 15/100 — this site sits in the bottom third of the power plants we cover by heating degree-days.
Climate normals: WorldClim 2.1 (1970–2000 monthly normals, 10 arc-min, CC BY 4.0); zone: Köppen-Geiger world climate classification (Kottek et al. 2006, 0.5° grid). Degree-days & heat-demand index computed by PowerAtlas — a modelled heat-demand proxy, not a measured site figure.
Site climate & environmental severity
This site sits in a moderately corrosive environment (estimated ISO 9223 class C3 — Medium), with humidity / wetness the leading environmental stress.
Indicative estimate via the ISO 9223:2012 informative method (atmospheric corrosivity from temperature, time-of-wetness and airborne salinity), using WorldClim climate normals, the Köppen-Geiger class and coast distance. Indicative, not a measured corrosion rate.
How it compares & nearby plants
The #5 largest hydro power plant of 174 in Vietnam by capacity.
Vietnam has 174 hydro power plants in this dataset, together about 17,313 MW of capacity.
Nearby power plants
Location
Coordinates 21.6965, 103.8776 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Frequently asked questions
What type of power plant is Huoi Quang?
Huoi Quang is a 520 MW hydro power plant in Son La, Vietnam, commissioned in 2015.
How much electricity does Huoi Quang generate?
Huoi Quang generates about 1,904 GWh of electricity per year.
Who operates Huoi Quang?
Huoi Quang is operated by Vietnam Electricity (EVN).