Experimental Breeder Reactor I is a decommissioned research reactor and U.S. National Historic Landmark located in the desert about 18 miles southeast of Arco, Idaho. It was the world's first breeder
Experimental Breeder Reactor Number 1 in Idaho, the first power reactor
Part of the core after the 1955 partial meltdown
Plaques at the EBR-I site
The first production of electricity at EBR-I occurred on December 20, 1951, when four light bulbs were lit
Breeder reactor
Videos
A breeder reactor is a nuclear reactor that generates more fissile material than it consumes. These reactors can be fueled with more-commonly available isotopes of uranium and thorium, such as uranium
Experimental Breeder Reactor I
…research reactor and U.S. National Historic Landmark located in the desert about 18 miles (29 km) southeast of Arco, Idaho. It was the world's first breeder reactor. At 1:50 p.m. on December 20, 1951, it became one of the world's first electricity-generating nuclear power plants when it produced sufficient electricity…
The Beloyarsk Nuclear Power Station, site of the BN-600 and BN-800, the only two commercially operational breeder reactors as of 2026
Experimental Breeder Reactor II, which served as the prototype for the Integral Fast Reactor
The graphite core of the Molten Salt Reactor Experiment
The Shippingport Reactor, used as a prototype light water breeder for five years beginning in August 1977