France France · Bagnols-sur-Cèze · 44.162, 4.619

G-1

G-1, a research reactor (graphite) in Bagnols-sur-Cèze, France, with 46 MW of thermal power, operated by French Atomic Energy Commission (CEA). Shut down, first critical in 1956.

It was one of the 38 research reactors France has had; 2 remain in operation today. It went critical 8 years after the first research reactor in France, ZOE (EL-1) (1948). 4 graphite-moderated research reactors remain in operation today across 3 countries.

Country
France
City
Bagnols-sur-Cèze
Type
Graphite
Thermal power
46 MW
Operator
French Atomic Energy Commission (CEA)
Status
Shut down
First criticality
1956

Data: IAEA RRDB · updated on Sep 3, 2026

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