Heatwave forces shutdown of Hungary's largest nuclear plant

Budapest announced on Tuesday that a severe heatwave has compelled the shutdown of Hungary’s largest nuclear facility, the Paks Power Plant, after unusually low water levels in the Danube River compromised the station’s cooling system. The plant, which supplies roughly half of the country’s electricity, was forced to halt operations as river temperatures rose and flow rates fell, limiting the amount of water available for the reactors’ essential cooling processes. Officials said the decision was taken as a precautionary measure to avoid overheating and potential safety risks, and that the plant will remain offline until water conditions improve.

The shutdown comes amid a broader European heatwave that has driven river levels to historic lows, prompting similar concerns at other hydro‑dependent power sites. Energy authorities are monitoring the situation closely and have activated contingency plans to balance the grid, including increased reliance on fossil‑fuel generators and imports from neighboring countries. While the interruption is expected to be temporary, officials warned that prolonged low water levels could affect electricity supply stability and may require further adjustments to Hungary’s energy strategy.