Rosenergoatom said the Generation III+ VVER-1200 unit is now technically ready for commercial operation pending final approval from national nuclear regulator Rostechnadzor.
Construction of Novovoronezh 2-2 began in July 2009. It was connected to the national grid for the first time on 1 May 2019.
Novovoronezh 2-2 will be the third unit of the VVER-1200 design to be completed in Russia.
The others were its sister unit, Novovoronezh 2-1, which began commercial operation in February 2017, and Leningrad 2-1, which began commercial operation in October 2018.
According to Rosenergoatom, VVER-1200s can be operated commercially for at least 60 years.