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Superphénix nuclear power plant — France

Retired nuclear power-station site in Isère, France. Approximate location 45.7613, 5.4701.

NuclearIsèreFranceNa-1200fast breeder reactorRetired

Superphénix nuclear power plant is a retired nuclear power station in Isère, France. Its current lifecycle status is “Retired” — so it is not yet, or no longer, generating at full output. It ranks #26 of 2,216 France power plants by installed capacity. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, nuclear supplies about 68.8% of France's electricity; the national grid averages 41 gCO₂/kWh (94.9% low-carbon) (2025).

1,242MW installed capacity
10construction time (1976→1986)
1986commissioned (~40 yrs)

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

Data status

Known data

FacilitySuperphénix nuclear power plant GEM-nuclear
CountryFrance · Isère GEM-nuclear
Coordinates45.7613, 5.4701 GEM-nuclear
FuelNuclear GEM-nuclear
MW installed capacity1,242 MW GEM Global Nuclear Power Tracker September 2025 unit-status sum (retired); retired/historical capacity
Verification noteSum of 1 GNPT unit records in the selected retired historical scope. source-verified
OwnerElectricité de France SA [100%] GEM-nuclear
Commissioned1986 GEM-nuclear
Technologyfast breeder reactor GEM-nuclear

Calculated from dataset

Capacity rank in country#26 / 2216 calculated
Fuel-specific rank in country#21 / 23 calculated
Capacity vs country/fuel peers0.40× · 3,122 MW · n=23 calculated
Environmental severityC2 · 27/100 derived from coordinates

Not available

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

Source of the capacity and fuel values:

capacity: GEM Global Nuclear Power Tracker September 2025 unit-status sum (retired); fuel: GEM GNPT

In context: how this plant compares

At 1,242 MW, Superphénix nuclear power plant is below the median nuclear plant in France (3,122 MW). Technically it is described as fast breeder reactor. Its lifecycle status is Retired; it no longer generates electricity. Nuclear plants split uranium to raise steam with no direct CO₂; they run as steady baseload with very high capacity factors and the longest operating lifetimes of any thermal plant.

Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.

How it compares & nearby plants

The #21 largest nuclear power plant of 23 in France by capacity.

France has 23 nuclear power plants in this dataset, together about 74,927 MW of capacity.

Nearby power plants

Location

Coordinates 45.7613, 5.4701 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Frequently asked questions

What type of power plant is Superphénix nuclear power plant?

Superphénix nuclear power plant was a nuclear-fired power station in Isère, France and was retired.

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