Power has mostly been restored to cities across Spain and Portugal after a major outage caused chaos yesterday. But a debate is growing about what caused the cuts.
Authorities have ruled out a cyberattack, with investigations indicating the outage was caused by a “very strong oscillation in the electrical network” that led Spain’s power system to disconnect from the European system, collapsing the Iberian electricity network
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##Update:
https://arstechnica.com/tech-policy/2025/04/massive-power-outage-in-spain-portugal-leaves-millions-in-dark/