Overview

• The blackout began midday on April 28, cutting power to tens of millions in Spain, Portugal, and parts of France, halting trains, planes, and critical services.
• By early Tuesday, more than 92% of Spain's electricity demand had been restored, with full recovery expected by the end of the day.
• Grid operators are investigating anomalous high-voltage oscillations, potentially linked to rare atmospheric phenomena, while ruling out cyberattacks as a cause.
• Hospitals, transport systems, and key services operated on backup generators, while disruptions to ATMs, internet, and fuel pumps caused widespread challenges.
• Emergency meetings were held by Spanish and Portuguese governments, with leaders emphasizing the need for resilience in interconnected power grids.