Spain’s Power Supply Is Almost Fully Restored After One of Europe’s Most Severe Blackouts

The Associated Press

15:51 JST, April 29, 2025

MADRID (AP) — Power had almost fully returned to Spain early Tuesday morning as many questions remained about what caused one of Europe’s most severe blackouts that grounded flights, paralyzed metro systems, disrupted mobile communications and shut down ATMs across Spain and Portugal.

By 6:30 a.m., more than 99% of energy demand in Spain had been restored, the country’s electricity operator Red Eléctrica said.

Power had gradually returned to several regions across Spain and Portugal as the nations reeled from the still-unexplained widespread blackout that had turned airports and train stations into campgrounds for stranded travelers. By Monday night, Portuguese grid operator REN said 85 out of 89 power substations were back online.

Monday night, many city residents, including in Spain’s capital of Madrid, went to sleep in total darkness. The normally illuminated cathedral spires of Barcelona’s Sagrada Familia Basilica became indistinguishable from the night sky. Streets remained deserted even in neighborhoods where lights flickered back on, as people stayed home after a day of chaos.

“We have a long night ahead,” Spanish Prime Minister Pedro Sánchez said when he addressed the European nation late Monday. “We are working with the goal of having power restored to the entire country.”

In Madrid, cheers erupted from balconies where the electricity had returned.

Cause Unknown

Officials did not say what caused the blackout, the second such serious European power outage in as many months after a fire at Heathrow Airport shut down Britain’s busiest travel hub on March 20.

They said there was little precedent for this kind of widespread electric failure across all of the Iberian Peninsula, with a combined population of some 60 million. Across the Mediterranean Sea, Spain’s Balearic Islands and the territories of Ceuta and Melilla were spared. The Canary Islands off the northwest coast of Africa were also spared.

“We have never had a complete collapse of the system,” Sánchez said, explaining how Spain’s power grid lost 15 gigawatts, the equivalent of 60% of its national demand, in just five seconds.

In his televised address late Monday, Sánchez said that authorities were still investigating what happened. Portugal’s National Cybersecurity Center threw cold water on feverish speculation about foul play, saying there was no sign that the outage resulted from a cyber attack.

Speaking to reporters in Brussels, Teresa Ribera, an executive vice president of the European Commission, also ruled out sabotage. Nonetheless, the outage “is one of the most serious episodes recorded in Europe in recent times,” she said.