Gross electricity output totalled 545,436 MWh in January, Krsko said in a statement posted on its website last week.
A total of 7.5 cubic metres of low and intermediate-level radioactive waste was stored in January, Krsko said.
Krsko NPP, located in Slovenia near the border with Croatia, generates some 40% of Slovenia's electricity output. It operates a Westinghouse pressurised light water reactor of 2,000 MW thermal power capacity.