Swarming jellyfish overrun French nuclear plant on same date two years in a row

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: A massive jellyfish swarm forced EDF to take parts of France’s Gravelines nuclear plant offline on August 11, exactly one year after a similar incident shut reactors at the site
• Several dozen tonnes of jellyfish blocked seawater pumping systems used for cooling

🔭 The context: EDF had invested hundreds of thousands of euros in additional protections after last year’s incident, including cameras and fishing vessels
• But the swarm overwhelmed those measures, highlighting the vulnerability of coastal nuclear infrastructure to changing marine conditions
• This summer, French reactors have also faced disruptions linked to heatwaves and drought

🌍 Why it matters for the planet: The incident illustrates how climate change can create new operational risks for low-carbon electricity infrastructure
• Rising sea temperatures can contribute to more frequent jellyfish blooms, while heat and drought can reduce the availability or suitability of cooling water
• Such disruptions can complicate France’s reliance on nuclear power as a major source of low-carbon electricity

⏭️ What’s next: EDF said teams were working to restore the affected reactors to the grid, while three fishing vessels were conducting continuous preventive operations around the plant
• The recurrence of the problem is likely to keep attention on how nuclear infrastructure can adapt to changing climate and marine conditions

💬 One quote: “This only highlights that nuclear power plants are ill-equipped to deal with the consequences of climate change.” - Greenpeace France

📈 One stat: Several dozen tonnes of jellyfish ultimately overwhelmed the preventive measures deployed around Gravelines, compared with roughly 100 kilograms detected earlier in the weekend.

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