?EZ began its diversification initiative in 2018, securing contracts with Westinghouse and France’s Framatome in 2022 to supply fuel assemblies for Temelín. The company expects to receive fuel from Framatome next year. Additionally, ?EZ has contracted Westinghouse to provide fuel for the Dukovany nuclear power plant and is negotiating with Framatome for similar arrangements.
Approximately one-third of the Czech Republic’s electricity comes from nuclear energy, generated by two VVER-1000 units at Temelín, operational since 2000 and 2002, and four VVER-440 units at Dukovany, operational since 1985–1987. Diversifying fuel suppliers and increasing reserves is viewed as a way to strengthen energy security for European Union countries using VVER reactors, originally designed in the Soviet era.
Specialists are conducting acceptance checks on the new fuel, verifying its weight and performing visual inspections. Bohdan Zronek, director of ?EZ’s nuclear energy division, stated: “One of the first steps is to check the accelerometers. This is a special device that indicates inappropriate handling during transport.” These checks ensure the fuel meets rigorous safety standards.
?EZ undertook a five-year series of analyses and tests to confirm the new fuel’s safety and compatibility. The company is preparing to submit an application to the State Office for Nuclear Safety for approval to use the fuel. The new assemblies will enable longer fuel campaigns—18 months at Temelín and 16 months at Dukovany—improving operational efficiency.
Daniel Beneš, ?EZ chairman and CEO, highlighted the significance of the initiative: “This is a step that significantly increases the energy security of the Czech Republic. In addition to diversifying nuclear fuel suppliers, we also hold strategic reserves in both of our nuclear power plants.” These efforts aim to ensure a reliable and stable energy supply for the country.
