EDF Implements Jellyfish Monitoring at Gravelines Power Station

Le Figaro

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After the episode of August 2025 which led to the arrest of four of the six reactors at the Hauts-de-France power station, the group armed itself to face a possible further invasion of these gelatinous animals.

economiematin.fr

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In August 2025, the invasion of jellyfish forced EDF to shut down four of the six Gravelines reactors, exposing the economic vulnerability of coastal nuclear power plants to climate phenomena. Since then, the French energy giant has invested heavily in prevention: 1.5 million euros over three years for a surveillance infrastructure that looks more like an expensive insurance than a definitive solution. A cost of prevention that is added to the o…