Climate

Romania begins the process of closing the nuclear power station due to the low water level of the Danube

The Danube’s critical water level is preventing the nuclear power stations from operating

by Enrico Bronzo

aggiornato il 13 agosto 2026

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FOTO D'ARCHIVIO: Vista del primo e del secondo reattore nucleare della società statale Nuclearelectrica, a Cernavoda, Costanza, Romania, 3 settembre 2025. Inquam Photos/George Calin via REUTERS  via REUTERS

2' min read

Translated by AI
Versione italiana

2' min read

Translated by AI
Versione italiana

Romania has begun the complete shutdown of its only nuclear power station after the water level of the Danube, which is used to cool the plant, reached an all-time low, according to the national nuclear energy company.

Nuclearelectrica had already shut down one of the two reactors at the Cernavoda power station last month, and the second reactor also had to be shut down “due to the significant and ongoing drop in the water level of the River Danube”, according to a statement.

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On 3 August, Romania diverted the course of the Danube to save a nuclear power station

The Romanian army has taken unprecedented measures to increase the flow of water to the country’s only nuclear power station, by blowing up a rock formation in the Danube on 3 August 2026. The army used 180 kilograms of explosives in a controlled blast to remove a rock that was narrowing a branch of the river, acting Defence Minister Radu Miruta told reporters. The aim was to redirect the water into the main channel feeding the plant to prevent the remaining reactor from shutting down. To no avail.

L’esplosione

La Marina rumena fa saltare in aria alcuni massi con esplosioni controllate sul canale di Bala per deviare il flusso delle acque del Danubio verso la centrale nucleare di Cernavoda, a Izvoarele, in Romania, il 3 agosto 2026. Foto Inquam/George Calin via REUTERS ATTENZIONE REDATTORI

The Black Sea country had already shut down one of its two reactors at the Cernavoda power station because low water levels in the Danube caused by the drought were preventing the equipment from being adequately cooled.

Romania, esplosivi nel Danubio per contrastare la siccità

The drop in energy production has prompted the government to ask businesses and the public to reduce their consumption: the country’s two largest car manufacturers, Dacia and Ford Otosan, part of Renault SA, have already suspended production until the end of August, said acting Prime Minister Ilie Bolojan.

The procedure also involved the sinking of four barges filled with rocks and other material to create an artificial barrier and divert water towards Cernavoda.

Romania has declared a state of alert in the energy sector for the whole of August, as energy production is falling sharply due to the drought and record-low water levels in the Danube. The country, which relies on a mix of energy sources including solar, wind and nuclear power, is currently importing around 2,000 megawatts a day to meet its demand, particularly during peak hours when costs are higher, according to Bolojan.

La centrale in Ungheria

Il 13 agosto 2026, a Dunaszentbenedek, in Ungheria, i geometri preparano i lavori di costruzione di una soglia sul letto del fiume per innalzare il livello delle acque del Danubio nei pressi della centrale nucleare di Paks. REUTERS/Bernadett Szabo

Further upstream, in neighbouring Hungary, Prime Minister Peter Magyar told journalists on the same day, 3 August 2026, that water levels were sufficient to keep one of the four reactors running at half power for at least another day at the country’s only nuclear power station.

Over the weekend, the government was preparing to shut down the 2,000-megawatt power station, but later stated that the forecasts for water levels had become slightly more optimistic.

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