Unit 3 of Slovakia's Mochovce nuclear plant reaches first criticality

26 Oct 2022

Slovakia’s power utility Slovenské elektrárne (SE) has announced that the 440 MW Unit 3 of the Mochovce nuclear power plant has reached first criticality. The Unit is expected to become fully operational in early 2023 and allow Slovakia to be self-sufficient in terms of electricity generation. The completion of commissioning will see a 144-hour test run of unit 3 at full capacity. 

The 1.9 GW Mochovce nuclear plant, located near Nitra in central Slovakia, is comprised of four VVER units. The first two units (500 MW each) were commissioned in 1998 and 1999. The fourth unit (440 MW) is still under construction and should be commissioned by the end of 2022. Construction on Units 3 and 4 started in 2009. The plant is operated by SE and owned by the Slovakian government (34%), Enel (33%) and EPH (33%). Slovakia has another nuclear plant (Bohunice) comprising two 471 MW units.

At the end of 2021, nuclear represented 23% of Slovakia’s installed capacity with 1.9 GW and 53% of the country’s production with nearly 16 TWh.

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