On 9 September 2022 the BN-800 fast-neutron reactor at the Beloyarsk NPP began operations with its core fully loaded with MOX fuel. The reactor, first connected to the grid in 2015, began operations with a core with HEU and some experimental MOX fuel assemblies. In 2019, Rosatom began serial production of MOX fuel at the Mining and Chemical Combine in Zheleznogorsk.

UPDATE 09/23/2022: The reactor achieved full power on 22 September 2022.