A ceremony to pour the first concrete for the Paks II nuclear power plant in Hungary has taken place, according to Rosatom, the Russian state corporation carrying out the project. They stated that “The first concrete for the reactor building’s foundation marks the facility’s transition to the status of ‘nuclear power plant under construction’ according to IAEA standards.”
The Hungarian Atomic Energy Authority issued the required permits to begin main construction of the Paks II NPP at the beginning of November.
In September 2025 the European Union court reversed the decision to finance the construction of two power units of Paks II. The decision reverses the previous authorization by the European Commission of financial support to the project by Hungary of 2017.

According to the court, the main financing of the project should come from a Russian loan of €10 billion. Another €2.5 billion was to be provided from the Hungarian budget.
In 2009, the Hungarian parliament approved the expansion of the Paks NPP, to be the first NPP in the country. Moscow and Budapest signed an agreement on the provision of a long-term loan for the construction of the NPP in 2014. In August 2022, the Hungarian Atomic Energy Authority gave Rosatom permission to build Power Units 5 and 6 of the NPP. In May 2023, the European Commission approved amendments to the agreements on the construction and financing of the facility.
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