France France · Saint-Paul-les-Durance · 43.678, 5.769

REACTOR JULES HOROWITZ

REACTOR JULES HOROWITZ, a research reactor (tank) in Saint-Paul-les-Durance, France, with 100 MW of thermal power, operated by CEA. Under construction.

Once in operation it will be the most powerful research reactor in France, ahead of the 2 operating today. 36 tank-type reactors remain in operation today across 23 countries. Its declared uses include isotope production, transmutation and materials testing.

Country
France
City
Saint-Paul-les-Durance
Type
Tank
Thermal power
100 MW
Operator
CEA
Design and construction
Designed by CEA · TechnicAtome · built by TechnicAtome
Status
Under construction
First criticality
—
Purpose
Isotope production, transmutation, materials testing

Data: IAEA RRDB · updated on Sep 21, 2026

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