The First Nuclear Power Plant

The world's first nuclear power plant to generate usable electricity was built not in a major research city, but in the middle of the Idaho desert. On December 20, 1951, Experimental Breeder Reactor 1 produced enough electricity to power four 200-watt lightbulbs. By the following day it was generating enough for the entire building. The Idaho National Laboratory still operates on the same site today and remains one of the premier nuclear energy research facilities in the world, a remarkable legacy hiding in plain sight among the sagebrush.

Source: Wikipedia