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Spain’s electricity grid operator rules out cyber attack as cause of blackout

  • On Monday, a massive blackout disrupted Spain, Portugal, and parts of France, Morocco, and Greenland, causing widespread chaos and infrastructure failures.
  • Authorities quickly ruled out a cyberattack as the cause, citing no intrusion in control systems, though the exact cause remains unknown and under investigation.
  • The blackout resulted from a sudden 15GW loss of power in southwest Spain, triggering disconnections that collapsed the interconnected Iberian electric grid.
  • Prime Minister Sanchez denied a nuclear shortfall caused the outage, stating critics were "lying or demonstrating their ignorance," and confirmed the government formed a commission to investigate.
  • Services and connectivity gradually resumed by Tuesday, while investigations including possible sabotage and systemic vulnerabilities continued with measures planned to prevent recurrence.
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At the time of the blackout, photovoltaic (PV) solar energy represented 59% of Spanish electricity, wind energy almost 12%, nuclear power almost 11% and combined cycle gas plants 5%, according to data from Red Electrica

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Center

The almost complete blackout in Spain on Monday was most likely not caused by hackers. Preliminary findings rule out a cyberattack, Spanish grid operator Red Electrica said. Portuguese Prime Minister Luis Montenegro also said there were no signs that the blackout was caused by a cyberattack.

·Ljubljana, Slovenia
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Publico broke the news in Portugal on Monday, April 28, 2025.
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