Italy Italy · Ispra · 45.815, 8.613 (approximate location)

ESSOR Nuclear Plant

ESSOR Nuclear Plant, a research reactor (heavy water) in Ispra, Italy, with 43 MW of thermal power, operated by Joint Research Centre Ispra. Shut down, first critical in 1967.

It was one of the 18 research reactors Italy has had; 5 remain in operation today. It went critical 8 years after the first research reactor in Italy, Avogadro RS-1 (1959). 10 heavy-water research reactors remain in operation today across 7 countries.

Country
Italy
City
Ispra
Type
Heavy water
Thermal power
43 MW
Operator
Joint Research Centre Ispra
Status
Shut down
First criticality
1967

Data: IAEA RRDB · updated on Sep 3, 2026

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