Spain-Portugal blackouts latest: Head of Spain’s power grid refuses to resign as officials hunt for cause - Power has been restored to tens of millions but the cause of the power cut remains unknown ...

Spain lost 15 gigawatts of electricity — or about 60% of its supply. Portugal, whose grid is connected to Spain’s, also went down. Only the countries’ island territories were spared.

Spain’s 2025 blackout wasn’t caused by too much solar or wind, but by outdated grid rules, weak voltage control, and poor coordination of system assets.

The cause of the blackout remains a mystery At a press conference on Monday evening, Spanish Prime Minister Pedro Sánchez said a nationwide blackout of this scale had never happened before in Spain.

The cause of the blackout remains a mystery At a press conference on Monday evening, Spanish Prime Minister Pedro Sánchez said a nationwide blackout of this scale had never happened before in Spain.

Spain and Portugal begin recovering from a massive blackout. Here's what to know Spanish prime minister Pedro Sánchez said a nationwide blackout of this scale had never happened before in Spain.