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The Gravelines nuclear power plant in France has temporarily halted multiple reactor blocks because millions of jellyfish clogged its cooling water intake systems, a recurring issue noted from the previous year.
Following an August 2025 incident that led to the shutdown of four reactors due to a jellyfish invasion, EDF has established a monitoring system at its Gravelines nuclear power plant in France to prepare for future occurrences.
The French government has given EDF the green light to begin preparatory work for two future next-generation EPR2 reactors at the Gravelines nuclear power plant in the north, as announced in a decree published today.
A massive swarm of jellyfish clogging pumps and extreme weather conditions, including a heatwave, have forced the shutdown of three reactors at France's Gravelines nuclear power plant. This has resulted in a record 20.4% of EDF's nuclear capacity being offline due to environmental factors.