Slovakia - World Nuclear Performance Report
Slovakia has five operable VVER440/V-213 nuclear reactors: two at Bohunice V2, 140 km northeast of Bratislava; and three at Mochovce, 100 km east of Bratislava. Mochovce 3 was grid connected in January 2023. Unit 4 at that site is under construction; hot testing began in March 2025.
In July 2024 Slovenské Elektrárne signed a contract with Framatome for the long-term supply of fuel to the VVER-440 reactors at its Bohunice and Mochovce plants, starting from 2027.
In May 2024 the government approved a plan for a new 1.2 GWe unit near the existing Bohunice plant. Slovakia signed a memorandum of understanding in June 2023 with a range of partners – US Steel Košice, the Slovak Electricity Transmission System, VUJE, the Office of Nuclear Supervision and the Slovak Technical University in Bratislava – to support development of SMRs. According
to a schedule from the Ministry of Economy a contractor is expected to be chosen in the first half of 2027.
Slovakia was one of the first recipients of support through the US-funded Project Phoenix. The initiative aims to support energy security and climate goals by creating pathways for coal-to-SMR plant conversions. In February 2024 Slovenské Elektrárne said that staff from Project Phoenix implementation partner Sargent & Lundy had visited its Bohunice and Mochovce nuclear power plants
and the Nováky and Vojany coal-fired plants to carry out field surveys. In October 2024 Slovakia was awarded a grant from the USA’s Nuclear Expediting the Energy Transition (NEXT) project for help in selecting a site for the construction of SMRs.
Nuclear electricity production by age of reactor
