Hungary's Paks nuclear power plant faces a potential complete shutdown as record-low water levels in the Danube River hinder reactor cooling [1, 2].
A full shutdown would jeopardize the national energy grid during a period of extreme heat, potentially triggering widespread power outages and severe economic losses.
The crisis peaked in July 2026, as a forecast heatwave brought temperatures over 40 °C [4, 5]. These soaring temperatures increased demand on the electrical grid while simultaneously reducing the availability of water needed to cool the facility's reactors [5]. At its lowest point, the Danube water level dropped to 31 cm [3].
The Paks facility is a cornerstone of the Hungarian energy infrastructure. Reports on its exact contribution vary, with some sources stating it supplies about one-third of the country's electricity [1], and others claiming it provides nearly half of the national power [2].
Government officials are monitoring the situation as the plant nears a complete shutdown, though it remains operational for now [1, 6]. The risk is compounded by the environmental strain of a broader European drought that has forced other nuclear reactors offline across the continent [7].
If the plant is forced to cease operations, the economic impact could be significant. Experts estimate the potential cost of resulting power cuts to be more than $600 million [1].
“The Paks facility is a cornerstone of the Hungarian energy infrastructure.”
This crisis highlights the vulnerability of nuclear energy infrastructure to climate-driven water scarcity. Because nuclear plants rely on consistent water volumes for thermal regulation, record-breaking droughts can transform a reliable baseload power source into a liability. For Hungary, the situation underscores a critical dependency on a single river system for both industrial cooling and national energy security.
