France · 44.143, 4.709Marcoule
Marcoule, nuclear power plant in France, operated 4 reactors: 1 other, 2 gas-cooled and 1 fast breeder between 1956 and 2010 and is now shut down.
It is France's oldest nuclear plant, operating since 1956.
- Country
- France
- Units
- 4
- Technology
- — · GCR · FBR
- Net capacity
- —
- First grid connection
- 1956
- Operator
- Compagnie Generale Des Matieres Nucleaires · Commissariat À L'Energie Atomique
- Owner
- Commissariat À L'Energie Atomique
- Status
- Shut down
See also: alerts for this plant · every plant in France · every GCR reactor · how a GCR works · every FBR reactor · how a FBR works
Units
| Unit | Type | Model | Status | MWe | MWt | Construction start | Grid connection | Closure | Load factor |
|---|---|---|---|---|---|---|---|---|---|
| Marcoule G1 | Other | unknown | Shut down | 7 | — | — | 1956 | 1968 | — |
| Marcoule G2 | Gas-cooled (GCR / AGR) | unknown | Shut down | 39 | 260 | Mar 1955 | Apr 1959 | Feb 1980 | — |
| Marcoule G3 | Gas-cooled (GCR / AGR) | unknown | Shut down | 40 | 260 | Mar 1956 | Apr 1960 | Jun 1984 | — |
| Phenix | Fast breeder (FBR) | PH-250 | Shut down | 130 | 345 | Nov 1968 | Dec 1973 | Feb 2010 | — |
Data: IAEA PRIS · Global Energy Monitor · Wikipedia · editorial review · updated on Sep 21, 2026
Marcoule G1, a 7 MWe gross — (unknown), operated from 1956 to 1968.
Marcoule G2, a 39 MWe GCR (unknown), started construction in 1955 and operated from 1959 to 1980.
Marcoule G3, a 40 MWe GCR (unknown), started construction in 1956 and operated from 1960 to 1984.
Phenix, a 130 MWe FBR (PH-250), started construction in 1968 and operated from 1973 to 2010.
Operator: Compagnie Generale Des Matieres Nucleaires (Marcoule G2, Marcoule G3) · Commissariat À L'Energie Atomique (Phenix).
Owner: Commissariat À L'Energie Atomique (Marcoule G1, Marcoule G2, Marcoule G3).