Norway Norway · Halden · 59.127, 11.404

HBWR

HBWR, a research reactor (heavy water) in Halden, Norway, with 20 MW of thermal power, operated by Institutt for Energiteknikk. Shut down, first critical in 1959.

It was one of the 4 research reactors Norway has had; 0 remain in operation today. It went critical 8 years after the first research reactor in Norway, JEEP I (1951). 10 heavy-water research reactors remain in operation today across 7 countries. Its declared uses include innovative research and materials testing.

Country
Norway
City
Halden
Type
Heavy water
Thermal power
20 MW
Operator
Institutt for Energiteknikk
Status
Shut down
First criticality
1959
Purpose
Innovative research, materials testing

Data: IAEA RRDB · updated on Sep 3, 2026

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