# Dukovany nuclear power plant developments

> Live situation record from CLSTR: https://clstr.news/situations/dukovany-nuclear-power-plant-developments
> Updated: 2026-08-24T15:32:14.000Z. Sources: 8. Developments: 3.

The Dukovany nuclear power plant in the Czech Republic is undergoing significant operational and financial developments. Recent projections indicate that the expansion of the facility is expected to cost between 600 and 700 billion CZK, a notable increase from previous estimates of 400 billion CZK. Karel Havlíček noted that the higher figure accounts for the ‘price of money’, specifically interest on state-provided loans, though this estimate assumes no major construction delays.

Analysts warn that these costs are highly sensitive to timing; for example, delaying completion from 2036 to 2040 would further increase expenditures. Experts also cite historical risks in the nuclear industry, noting that large-scale projects in France, Finland, and the United Kingdom have faced significant budget overruns and delays.

In addition to expansion planning, the site is undergoing intensive maintenance. Simultaneous planned outages of the third and fourth production blocks have mobilized approximately 3,000 workers for inspections and modernizations. A major component of this work includes the reconstruction of six 1,000-cubic-meter demineralized water storage tanks, a project scheduled to continue until early 2028. To minimize high-altitude risks, these 16-meter-high tanks are being built from the roof downwards. These modernization efforts are part of a broader strategy to ensure the facility remains operational and safe for up to 80 years.

## Timeline

### 2026-08-24: Dukovany Nuclear Power Station undergoes major modernization and maintenance

The Dukovany Nuclear Power Station is undergoing major modernization, including the reconstruction of six large demineralized water tanks and intensive maintenance during simultaneous unit outages.

4 sources. https://clstr.news/cluster/dukovany-nuclear-power-station-undergoes-major-modernization-and-maintenance

### 2026-08-22: Nuclear energy activity rises with Dukovany maintenance and new reactor launches

Nuclear energy activity is rising, with intensive maintenance underway at the Dukovany plant in Czechia and the commissioning of new reactors globally, including the Mochovce 4 block in Slovakia.

3 sources. https://clstr.news/cluster/nuclear-energy-activity-rises-with-dukovany-maintenance-and-new-reactor-launches

### 2026-08-14: Dukovany nuclear expansion costs projected at 700 billion CZK

The Dukovany nuclear power plant expansion is projected to cost 600–700 billion CZK, as previous estimates excluded interest on state loans and potential construction delays.

2 sources. https://clstr.news/cluster/dukovany-nuclear-expansion-costs-projected-at-700-billion-czk

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Cite as: Dukovany nuclear power plant developments. CLSTR, https://clstr.news/situations/dukovany-nuclear-power-plant-developments