Russia has shut down Unit 4 of the four-unit Bilibino nuclear power station in the far eastern region of Chukotka, marking the final phase of retiring all four units at the site, state-owned nuclear operator Rosenergoatom said.

According to Rosenergoatom, Unit 4 was shut down on 30 December. Units 2 and 3 were also shut down in December.

Unit 1 was shut down in 2018 and its spent fuel has already been removed to the onsite storage pool, Rosenergoatom said.