Romania delays Danube barge sinking to save nuclear reactor as water levels hit record lows

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7 days · 8 summary articles
Romania delayed until Friday the sinking of four rock-filled barges into the Danube River to divert water toward its sole operational nuclear reactor at Cernavoda, citing unsafe conditions. The move aims to buy a few more days of operation for the plant, which relies on Danube water for cooling and has already shut down one of its two reactors due to record-low water levels .
The Danube’s flow in Romania dropped to 1,400 cubic meters per second on Thursday, about a third of the August average. Authorities plan to submerge the barges one at a time starting at 1200 GMT to create a barrier and redirect water from a river branch toward the plant. Romeo Urjan, the Cernavoda plant’s director, told Digi24 that if the barges fail to generate a water surplus, the remaining reactor could cease operations within five to six days, though a successful operation might extend that deadline to nine or 10 days .
Romania’s interim Prime Minister Ilie Bolojan urged households and businesses to reduce electricity consumption between 7 p.m. and 11 p.m. until the end of August to ease pressure on the power system. Bucharest has already reduced street lighting by one-third and switched off illumination at landmarks overnight. Major industrial consumers, including car manufacturers and steel producers, have suspended or scaled back operations to reduce grid strain .
The Cernavoda plant’s two reactors, operated by Nuclearelectrica, supply a fifth of Romania’s electricity. Previous efforts, including detonating a rock obstruction earlier this week and dredging the riverbed, provided only temporary relief. ING Bank noted in a statement that such measures “should not be mistaken for an energy strategy,” as they do not address long-term needs like new generation capacity or grid interconnections .
Hungary’s Paks nuclear power plant, also dependent on Danube water for cooling, was fully shut down on Aug. 3 due to record-low levels. Hungarian Prime Minister Péter Magyar reported on Thursday that water levels near Paks had risen by 4 centimeters in 24 hours, expressing optimism that the plant could restart soon. Slovakia’s Environment Minister Tomáš Taraba pledged to maintain steady water flow to support Hungary’s nuclear operations .
The Danube’s historic lows have exposed sandbanks and stranded cargo vessels in Serbia, while in Bulgaria, Roman-era bridges have emerged. In Budapest, authorities dimmed historic landmarks to conserve energy amid the crisis .
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