
Romania has been forced to shut down the last operating reactor at its only nuclear power plant after drought caused the level of the Danube River to drop to record lows, a rare move that will immediately affect energy supplies to neighboring Moldova.
Drought and record low water levels have deepened fears of an energy crisis across Europe, which is facing a new summer heatwave.
The drought-stricken Danube, whose waters cool the Romanian power plant in Cernavoda, forced Nucelarelectrica to shut down a reactor in late July.
On Thursday, the company said it had to shut down the second reactor “due to the significant and persistent drop” in the river’s water level and did not anticipate a restart within the next 10 days. Nuclearelectrica’s two 706-megawatt reactors account for 20% of the country’s power generation.
Romania has declared an energy emergency throughout August and has asked companies and households to reduce consumption during peak hours.
The reactor shutdown presented immediate problems for Moldova, Romania's eastern neighbor, which has also experienced low river levels and relies on Romanian energy to cover up to 60% of its electricity shortfalls.
The drought has hit nuclear power suppliers across Europe.
France, which uses nuclear power to generate about 70% of its electricity, recorded a shortage of more than 20% in nuclear generation capacity this week, a record deficit caused by outages linked to drought, extreme heat and a jellyfish invasion, according to Agence France-Presse calculations based on data from Électricité de France (EDF).
In total, 13 of the 57 reactors in EDF's nuclear fleet were affected.
Hungary, neighboring Romania, has avoided the complete shutdown of its only nuclear power plant, Paks, whose four reactors are also cooled by the Danube.
Drought in Europe has been exacerbated by human-caused climate change, according to the World Weather Attribution group of scientists, who warn that the problem will get worse.
Low levels of the Danube, the second longest river in Europe, have also severely affected maritime transport along its 2,850 km route that stretches from western Germany to the Black Sea.