Extreme heat and drought conditions across Europe are severely disrupting the operation of nuclear power plants, prompting governments to implement extraordinary measures to maintain energy supplies. In Romania, the state-owned nuclear power producer Nuclearelectrica began disconnecting its sole operating reactor from the power grid due to low water levels on the Danube River, despite recent government interventions such as dredging the channel, sinking rock-filled barges, and conducting a controlled underwater explosion to improve water flow to the Cernavoda power plant's cooling systems. The two reactors at this plant typically supply about 20% of Romania's electricity [1].
Hungary has experienced some relief as rainfall increased water levels on the Danube, allowing the government to restart another turbine at the Paks nuclear power plant. According to Hungarian Prime Minister Péter Magyar, two of the plant's eight turbines are now operational, providing some respite to a facility that supplies nearly half of Hungary's electricity [1].
In France, where nuclear energy accounts for approximately 70% of the country's electricity, utility provider EDF reduced output at multiple reactors due to environmental issues. Additionally, three reactors at the Gravelines nuclear power plant were shut down earlier in the week following a 'massive influx of jellyfish,' marking the second consecutive year such an event has occurred at one of France's largest nuclear facilities. France has reportedly been forced to shut down a record number of nuclear power plants this summer amid ongoing extreme heat, wildfires, and droughts [1].
The economic implications are significant, with Triodos estimating that heat-related disruptions could cost the EU 180 billion euros ($207.7 billion), roughly 1% of GDP. European governments are now exploring options such as upgrading cooling systems and adjusting maintenance schedules to mitigate nuclear power's vulnerability to heat waves and low water levels [1].
CONCLUSION
Europe's nuclear power sector is facing unprecedented operational challenges due to extreme weather, with significant impacts on energy supply and economic growth. Governments are responding with emergency measures and considering long-term adaptations, but the immediate market sentiment remains negative given the scale of disruptions and potential costs.