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Jellyfish Swarm Triggers Complete Shutdown of Gravelines Nuclear Plant

Four of six reactors at Gravelines nuclear plant shut down after jellyfish clogged cooling filters, temporarily halting power to about 5 million homes, EDF said.

  • On Aug 10, Electricité de France said units 2, 3, 4 shut down between 11pm and midnight, and reactor 6 just after 6am on Monday due to jellyfish clogging intake filters at Gravelines Nuclear Power Station.
  • Amid warming North Sea waters, jellyfish breed faster, and Derek Wright said the reproductive window is widening, with blooms around Calais increasing, on Sunday night.
  • Six reactors at Gravelines Nuclear Power Station produce 900 megawatts each, totaling 5.4 gigawatts and powering around 5 million homes.
  • Teams are conducting diagnostics and interventions to restart the entire plant in complete safety, with reactors expected on Thursday.
  • Similar shutdowns have occurred at nuclear plants in Sweden, Japan and the United States, as jellyfish blooms increase worldwide due to climate change, overfishing and invasive species.
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49 Articles

NZ HeraldNZ Herald
+4 Reposted by 4 other sources
Center

France restarts nuclear plant after jellyfish invasion

A nuclear power plant in northern France hit by a jellyfish invasion was getting back online, operator EDF said, with service restored at the first of four...

·Auckland, New Zealand
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Lean Left

More and more diffused in the warm seas, they have clogged the filters of the cooling water in Gravelines, in the north of the country. Sunday evening four reactors have...

·Turin, Italy
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Lean Left

A first reactor at the Gravelines nuclear power plant in the North was able to restart on Wednesday 13 August. Production had been completely paralyzed since Monday due to the massive arrival of jellyfish. Marine animals invade the coast.

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Sud OuestSud Ouest
Reposted by
Le MondeLe Monde
Center

Jellyfish have washed up in the filters of the seawater pumping stations used to cool the installations. Three other units remain shut down A first reactor of the

·France
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L'Opinion broke the news in on Monday, August 11, 2025.
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