It follows a long-term uranium enrichment contract signed with Orano at the end of 2023 for the Temelín nuclear power plant.
Daniel Beneš, chairman and CEO of ČEZ, said: "Securing a Western provider of uranium enrichment services for Dukovany is not only an important step for the Czech energy industry, but also for the entire Czech Republic. This significantly further strengthens energy security."
Nicolas Maes, CEO of Orano, said: "We are happy to be able to extend our long-term cooperation with our proven customer, ČEZ. This contract is a renewed and solid proof of the confidence of this Czech customer in the know-how and reliability of Orano."
The Czech Republic uses nuclear power for 34% of its electricity, generating this from the four reactors at Dukovany and two at Temelin. Its current new nuclear plans include up to four new units, as well as a possible roll-out of small modular reactors.
