From 1 January until 27 December 2019 the two VVER-1000 units produced 16.3 TWh of electricity breaking a previous record from 2011, the statement said.
The two-unit station in the north of the country was expected to produce 16.5 TWh of electricity by the end of 2019, the statement said.
Kozloduy-5 and -6, Bulgaria’s only units in commercial operation, supply about a third of the country’s electricity.
Kozloduy-5 began commercial operation in 1988, followed by Kozloduy-6 in 1993.
In April 2018, Bulgaria’s nuclear regulator licensed Kozloduy-6 to operate at 104% of its design capacity. Work is under way on a similar planned uprate for Unit 5.
Both units were recently granted 10-year operating lifetime extensions by the authorities.