Hungary’s only nuclear power plant, Paks, is confronting a possible full‑scale shutdown after record‑low water levels in the Danube River threatened its cooling system, prompting the government to issue emergency electricity‑saving measures on August 5. The situation, described by local outlets as a "critical day in energy supply," could leave the country without a major source of baseload power during a severe heat wave.

River levels and heat drive the crisis

Satellite imagery and on‑the‑ground reports confirm that the Danube has fallen to its lowest point in decades, a condition linked by climate analysts to the broader European heatwave that is drying up rivers across the continent (CNN). Hungarian officials warned that the reduced flow jeopardises the cooling capacity of the Paks reactors, a risk that would force a mandatory shutdown under safety regulations (CBS News).

In response, the government issued a rapid alert at 16:00 on August 5, urging households and businesses to cut electricity consumption. TVP World and several regional broadcasters reported that Hungarians responded by slashing usage, with some utilities recording a drop of up to 15 % in demand during peak hours.

According to euractiv.com, the imminent shutdown was averted only after the Danube rose by a few millimetres, a narrow margin that bought the plant additional time but underscored the fragility of the supply chain.

Paks Nuclear Power Plant
Paks Nuclear Power Plant (Image: Wikimedia Commons)

"Hungary avoided nuclear shutdown by 'millimetres' as Danube rises," euractiv.com reported.

Political stakes rise alongside the water level

The energy emergency has amplified political tensions ahead of a parliamentary vote to elect a new president on August 11, as announced by Reuters and echoed by Yahoo News UK. Prime Minister Viktor Orbán’s Fidesz party faces criticism from opposition figures and within its own ranks; conservative commentator János Bóka accused the government of a sluggish response to the Tisza River flood‑control crisis that compounded the Danube issue (Hungarian Conservative).

International observers note that the Paks plant is also at the centre of a geopolitical dispute. Ukraine’s President Volodymyr Zelenskiy has warned that Russia’s "most destructive weapons" could target Hungarian energy infrastructure, while Russian‑aligned media have reportedly singled out Energy Minister Péter Magyar for criticism over the planned Paks II expansion (Daily News Hungary, Hungarian Conservative).

The European Union is reportedly preparing an emergency meeting to discuss contingency plans should the plant be forced offline, reflecting concerns that a shutdown would ripple through the regional power grid (AOL.com). At the same time, a poll cited by Hungarian Conservative indicates broad public support for energy‑saving measures, though the same source notes a deep political divide over the government’s handling of the crisis.

Electricity pylons, Basa street, 2018 Kőbánya
Electricity pylons, Basa street, 2018 Kőbánya (Image: Wikimedia Commons)

While the immediate danger appears to have receded with the modest rise in river levels, experts caution that the combination of climate‑driven drought, ageing infrastructure, and political pressure could produce further flashpoints. The government has pledged to monitor the Danube continuously and to explore alternative cooling solutions, but no long‑term strategy has been detailed.

As Europe grapples with unprecedented heat and water scarcity, Hungary’s experience serves as a stark illustration of how climate extremes can intersect with energy security and domestic politics, potentially reshaping the country’s energy landscape for years to come.