Overview

• Units 2, 3 and 4 shut down automatically late Sunday and unit 6 stopped early Monday after jellyfish clogged the plant’s cooling-water filters.
• Two other reactors were already offline for scheduled maintenance, leaving the entire Gravelines complex at zero output.
• EDF reports that safety systems operated as designed, that there has been no impact on personnel or the environment, and that electricity supplies remain secure.
• Teams are diagnosing and repairing the non-nuclear pumping infrastructure with a restart of affected units projected by Thursday, August 14.
• Experts link the bloom of invasive Asian moon jelly in the warming North Sea to climate change and ballast-water transport, highlighting a recurring risk for coastal power facilities.