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Louron

Hydro power plant in Midi-Pyrenees, France. Approximate location 42.79, 0.41.

HydroMidi-PyreneesFrance

Louron is a 49 MW hydro power plant in Midi-Pyrenees, France. It is operated by GDF-SUEZ. Based on its capacity (estimated), it can supply roughly 49k homes (estimated). It ranks #172 of 2,216 France power plants by installed capacity. Commissioned in 1940, it is around 86 years old — an older, legacy facility. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, hydro supplies about 10.4% of France's electricity; the national grid averages 41 gCO₂/kWh (94.9% low-carbon) (2025).

49Legacy source-record capacity
49,356homes powered (est.)
1940commissioned (~86 yrs)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id WRI1026720.

Data status

Known data

FacilityLouron WRI
CountryFrance · Midi-Pyrenees WRI
Coordinates42.79, 0.41 WRI
FuelHydro WRI
MW installed capacity49 MW WRI source record; scope not independently normalised
OwnerGDF-SUEZ WRI
Commissioned1940 WRI

Calculated from dataset

Capacity rank in country#172 of 2216 calculated
Fuel-specific rank in country#83 of 428 calculated
Capacity vs country/fuel peers9.30× · 5 MW median · 428 peers calculated
Homes-powered equivalent49,356 calculated
Climate5.7°C · HDD 4,476 derived from coordinates
Environmental severityC2 · 25/100 derived from coordinates

Not available

TechnologyNot available not in dataset
GWh reported / yrNot available not in dataset
CO₂ emissionsnot applicable not applicable

Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.

Data provenance

The capacity and fuel fields on this page are source-record values from the upstream open dataset. They are useful for identification and ranking, but they have not been upgraded to a 2026 registry/GEM-location verified value.

capacity: WRI Global Power Plant Database source-record (legacy); fuel: WRI source-record fuel

In context: how this plant compares

At 49 MW, Louron is well above the median hydro plant in France (5 MW). 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.

Capacity vs largest hydro plants in France

GRAND MAISON: 1,713 MW2kGRAND MAIS…MONTEZIC: 910 MW910MONTEZICREVIN: 808 MW808REVINSUPER BISSORTE: 742 MW742SUPER BISS…BATHIE: 600 MW600BATHIECHEYLAS: 485 MW485CHEYLASPOUGET: 447 MW447POUGETGENISSIAT: 420 MW420GENISSIAT

Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).

Owner

Operated by GDF-SUEZ. 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 temperate oceanic climate (Köppen Cfb) — Northern Hemisphere, latitude 42.8°N — which shapes how much energy it can produce and how its output varies through the year.

5.7°Cannual mean temp
4,476heating degree-days (base 18°C)
0cooling degree-days (base 18°C)
1,693 melevation

Monthly mean temperature

J: -2 °CJF: -1 °CFM: 1 °CMA: 3 °CAM: 7 °CMJ: 11 °CJJ: 15 °CJA: 15 °CAS: 12 °CSO: 7 °CON: 2 °CND: 0 °CD15 °C

Heating degree-days here run 82% above 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: 90/100 — this site sits in the top 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

For a plant’s outdoor hardware — heat-recovery steam generators (HRSG), expansion joints, valves, flanges and their insulation — the local climate sets how fast unprotected steel and coatings degrade. This site sits in a mild atmospheric environment (estimated ISO 9223 class C2 — Low), with humidity / wetness the leading environmental stress.

C2ISO 9223 corrosivity (indicative)
25/100environmental-severity index
17.1°Cseasonal temperature swing
186 kmdistance to coast

Higher environmental severity is exactly where protective removable insulation pays back most: a sheltered micro-climate slows corrosion, UV and thermal-cycling damage and extends outdoor hardware service life. This is an indicative site-climate context — not a condition assessment of any specific plant or operator.

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 #83 largest hydro power plant of 428 in France by capacity.

France has 428 hydro power plants in this dataset, together about 19,602 MW of capacity.

Nearby power plants

Location

Coordinates 42.79, 0.41 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Frequently asked questions

What type of power plant is Louron?

Louron is a 49 MW source-record hydro power plant in Midi-Pyrenees, France, commissioned in 1940.

How many homes can Louron power?

Its output is enough to supply roughly 49,356 homes (estimated).

Who operates Louron?

Louron is operated by GDF-SUEZ.

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