How climate change threatens Europe’s nuclear renaissance

illuminem summarises for you the essential news of the day, reviewed by our editorial team. Read the full piece on POLITICO or enjoy below:

🗞️ Driving the news: Heat and drought pushed European river levels to record lows in August, depriving nuclear plants of cooling water and forcing shutdowns across the continent
• Romania closed both reactors after blasting rock to keep water flowing
• Hungary cut output by three-quarters at the plant supplying half its electricity
• Bulgaria throttled supply while France saw a record number of reactors halt or reduce generation
• Switzerland shut a reactor in June because river temperatures were too high to discharge warmed water without harming wildlife

🔭 The context: A coalition of EU countries wants to raise nuclear generation 50% by mid-century, and the UK plans to quadruple capacity
• Europe is the fastest-warming continent and unusually exposed, with many reactors sited on inland rivers or dependent on cooling ponds. Almost all were designed in the 1970s and 1980s
• The IAEA estimated around 15% of reactors worldwide drew on freshwater sources under significant strain in 2022, rising to 25% within twenty years
• Outage frequency has increased every decade since 1990

🌍 Why it matters for the planet: A generation technology deployed to cut emissions is being disabled by the warming it is meant to address
• When reactors throttle back during heatwaves, the shortfall is typically met by fossil generation at exactly the moment cooling demand peaks, causing drought, warmer seas, clogged pumping systems
• Over 70% of global capacity sits in three regions facing multiple climate hazards

⏭️ What's next: EDF plans €4.3 billion by 2040 to adapt French plants
• Hungarian Prime Minister Péter Magyar is reconsidering expansion, citing a cooling system unfit for global warming
• Romania's energy ministry says the drought has not changed its plans but reinforces the need for broader climate and hydrological assessment
• Water availability is now a key siting factor, and the IEA's Brent Wanner notes most new construction is already coastal

💬 One quote: "Climate change is making nuclear power more and more unpredictable" — Per Högselius, professor of technology history, KTH Royal Institute of Technology

📈 One stat: Around 15% of reactors worldwide relied on strained freshwater sources in 2022, projected to reach 25% within twenty years

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