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Fact Check: Could an ‘Experiment’ Have Caused the Iberian Blackout?

  • A massive blackout on April 28, 2025, plunged the Iberian Peninsula into darkness, disrupting telecommunications and transport across Spain and Portugal.
  • The British newspaper The Telegraph reported that Spanish authorities conducted a grid experiment probing renewable energy use before the outage, a claim officials strongly denied.
  • Spanish Energy Minister Sara Aagesen and REE head Beatriz Corredor called the experiment allegation false and irresponsible, noting no excess renewable energy, short circuits, or cyberattacks on April 28.
  • Experts noted no real-life tests were done at the outage time, emphasizing simulations prevent such experiments and suggesting management of renewables, not renewables themselves, may have played a role.
  • Investigations continue with Spain required to submit a technical report under EU law; the denial and lack of firm conclusions leave the cause of the outage unsettled.
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Valencia Plaza broke the news in on Tuesday, May 27, 2025.
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