Overview

• The government report concluded that April 28’s outage resulted from multifactorial voltage surges that triggered a chain reaction of disconnections
• Investigators identified insufficient voltage control mechanisms and improper plant disconnections by operators as key contributors to the cascade of failures
• The blackout left millions in Spain and Portugal without power, paralyzed transport networks, and caused five deaths
• A commission overseen by the Ministry of Ecological Transition will now propose corrective measures to address uncovered network vulnerabilities
• Officials have ruled out a cyberattack and excess solar power production as primary triggers for the outage