The Krsko plant was shut down for five days in June 2008 when a loss was detected in the cooling system, which led to the first Europe-wide radiation alert since the alert system went in place after 1986 Chernobyl disaster.
Slovenia came under fire for wrongly telling other countries that the whole episode was only an exercise.
Krsko works on an 18-month cycle, after which it is regularly closed for a month of maintenance.
In Earlier 18-month period, the plant generated 8.36 terawatt hours (TWh) of electricity which is 1.7% more than initially planned, the plant authorities said.
The Krsko plant is jointly owned by Slovenia and neighbouring Croatia, was built by Westinghouse Electric Company, LLC and became operational in 1983, when Croatia and Slovenia were part of Yugoslavia.
The plant is located 120 kilometers east of Ljubljana and produces 20% of Slovenia’s electricity and 15% of Croatia’s.
