The blackout, which swept across much of the Iberian Peninsula, also affected parts of Portugal and southern France. Spanish officials have confirmed that power has been restored to about half the country, but many regions remain in crisis mode.

Interior Minister María Jesús Montero announced the state of emergency late Monday, stating that the government is mobilizing national resources to assist regional authorities. “We are dealing with an unprecedented disruption,” Montero said. “Hospitals, transport systems, and communications have all been hit. Our priority is the safety and welfare of Spanish citizens.”

Government Still Investigating Cause

In a national address, Prime Minister Pedro Sánchez said the cause of the outage remains unclear. “We have no conclusive information at this time,” Sánchez told reporters. “All possibilities, including cyberattack and infrastructure failure, are being investigated.”

Spain’s national grid operator, Red Eléctrica, confirmed that the power cut originated from an unidentified fault in the high-voltage transmission system but offered no further details. Emergency services have been dispatched nationwide, with the military assisting in hospital support, traffic management, and communications recovery.

Airports, Hospitals, and Transport Disrupted

Flights were grounded at Madrid-Barajas and other major airports during the outage, though operations have since partially resumed. Several hospitals had to cancel elective surgeries and rely on backup generators. In Madrid, traffic lights failed across major intersections, causing widespread chaos on the roads.

European Response and Support

The European Commission has offered emergency technical support, while France and Portugal said they are closely monitoring the situation. In Brussels, EU Energy Commissioner Kadri Simson said the blackout raises serious questions about regional energy security and infrastructure resilience.

“Events like this underscore the urgent need for grid modernization and energy system coordination across Europe,” Simson said.

With partial power restored and investigations underway, Spanish citizens are bracing for a long road to full recovery — and answers.

Major cities including Madrid, Lisbon, Porto, and Marseille were affected, with millions left without electricity or internet access. The outage struck suddenly on Monday morning, causing widespread traffic gridlock as traffic lights failed and public transportation systems ground to a halt. Authorities were forced to deploy emergency personnel to manage the disruption and direct traffic manually in urban centers.

In Spain and Portugal, hospitals were hit especially hard. Several facilities reported disruptions to their critical systems, with some postponing or cancelling all non-emergency surgeries for the day as a precaution. Backup generators were activated at most hospitals, but officials stressed the strain on healthcare operations remained high.

The source of the outage has not yet been officially confirmed, but early reports suggest a failure in a major transnational power transmission line may have triggered a cascading effect across multiple grids. Investigations are underway.

Emergency protocols have been activated across all three countries, with national energy agencies and grid operators working through the day to restore power. By late afternoon, partial restoration had been reported in central Madrid and northern Portugal, though full service remains disrupted in many areas.

France’s energy ministry issued a statement urging calm, while confirming that the outage affected parts of the southern regions of Occitanie and Nouvelle-Aquitaine. French authorities are coordinating closely with Iberian counterparts to determine the cause and restore stability to the interconnected grid.

Social media has been flooded with images of darkened streets, stranded trains, and crowded gas stations. Several airports also reported brief delays as backup systems were brought online.

Authorities have not ruled out sabotage or cyberattack, but officials emphasized that it is too early to draw conclusions. Security services across the affected countries remain on high alert.

This developing story will be updated as more information becomes available.