Nuclear power in Kazakhstan
The utilization of nuclear power in Kazakhstan began with Kazakhstan's first nuclear power plant, the BN-350 fast-neutron reactor in Aktau, operating from 1973 to 1999, a Soviet era prototype investment preceding the BN-600 reactor. Since 1999, it has only operated four smaller research reactors and did not have nuclear electricity production capabilities.
Source: Wikipedia — Nuclear power in Kazakhstan (CC BY-SA 4.0)