Bulgaria's only operational nuclear power units in the Kozloduy plant have registered their largest quarterly production of electricity in their history in January-March 2011.

Thus, in the first quarter of 2011, 1000-MW units 5 and 6 produced a total of 4,506,941 MWh of electricity, while obeying all safety rules, the Kozloduy NPP announced.

The 2011 Q1 production is a record for the two units since they were launched in 1988-1993.

Compared with the first quarter of 2010, units 5 and 6 have produced 297,000 MWh more electricity, which will bring BGN 20 M more revenues for the NPP.

The Kozloduy NPP management says that the major factor for the record production is the "strict operational discipline and high motivation of the staff."

The 440-MW Soviet-era reactors 1, 2, 3, and 4 of the Kozloduy NPP were shut down in 2002 and 2006 on EU insistence leaving the Kozloduy plant only with two 1000-MW reactors in operation.