Monday's outage, one of the worst ever in Europe, started in the afternoon and lasted through nightfall, affecting tens of millions of people across the Iberian Peninsula. It disrupted businesses, hospitals, transit systems, cellular networks and other critical infrastructure.

Spain and Portugal held emergency Cabinet meetings as evacuations from some public spaces took place. Spain's Interior Ministry has declared a state of emergency for affected regions that need it. Follow DW.

Spain's national grid operator Red Eléctrica de España has ruled out a cyberattack and pointed to a drop in solar generation as the preliminary cause of the country's power outage, El Pais reports.