Czechia - World Nuclear Performance Report
Czechia has six operable reactors providing about 40% of the country’s electricity: two VVER-1000 units at Temelin, 100 km south of Prague; and four VVER-440 units at Dukovany, 30 km west of Brno. The government’s January 2025 National Energy and Climate Plan states that the share of generation provided by nuclear should rise to 68% by 2040.
In July 2024, KHNP was selected as the preferred bidder for up to four reactors – units 5&6 at Dukovany and units 3&4 at Temelin. The Czech government subsequently took an 80% stake in the new-build company, Elektrárna Dukovany II, to secure financing and strengthen national oversight.
On 4 June 2025, KHNP and the Czech government signed a $18.6 billion contract for the construction of two APR- 1000 reactors. Construction of the first unit is expected to begin in 2029, with trial operations targeted for 2036.
ČEZ is also planning to deploy small modular reactors. In September 2024 Rolls-Royce SMR was selected after assessing seven potential technology suppliers. In October ČEZ took a 20% stake in Rolls-Royce SMR. In April 2025 ČEZ selected Amentum to deliver environmental impact assessment reports related to proposals for Rolls-Royce SMRs at Temelin, as well as the Tušimice coal-fired power station, which is due to be retired in 2030. ČEZ is diversifying its nuclear fuel supplies. It signed contracts with Urenco in November 2024 for enriched uranium supply, and Kazatomprom in April 2025 for the supply of uranium concentrate. In mid-2025, Westinghouse delivered reloads of VVER-1000 and VVER-440 fuel for Temelín and Dukovany, respectively.
Electricity production by age of reactor
