On 28 April 2025, a catastrophic power blackout plunged the entire Iberian Peninsula into darkness for about ten hours, disconnecting a massive 31 gigawatts of load across Spain and Portugal. The collapse began at 12:33 CEST when a rapid series of generator trips near Granada, Badajoz, and Seville caused the grid frequency to drop below 48 Hz, triggering automatic load shedding that led to a complete system collapse. The blackout paralyzed daily life: Renfe halted all trains (leaving around 35,000 passengers stranded), Madrid's Barajas Airport lost power, and widespread telecom failures disrupted emergency services, tragically contributing to at least eight deaths. The event, which briefly spilled over into Andorra and southwestern France, prompted the European network operator ENTSO-E to investigate the unprecedented "total zero" on the Iberian electricity system. Restoration efforts relied on black-start hydro plants, with Portugal's grid fully back online by 00:22 and Spain's by 04:00 the next morning, though transport networks took longer to resume.