Following the massive power outage in Spain and Portugal in April, an investigation report released on Tuesday revealed that the blackout was caused by a power surge. The power surge on April 28 triggered a chain reaction of protective shutdowns,

Six weeks after Spain and Portugal suffered a massive power outage, authorities in Madrid said the blackout was caused by technical and planning errors. Spanish ecological transition minister Sara Aagesen,

The massive power outage left planes and trains disrupted and traffic jams stretching along roads, while people lost electricity across the two countries.