Cheers erupt in Spanish streets at moment power restored after mass outages

People in Madrid cheered as power was restored following mass outages in Spain on Monday, 28 April.

Cities across the Iberian Peninsula were plunged into darkness in one of Europe's most severe blackouts.

Power has now started returning to the two countries. Investigators are looking into the cause of the blackout, which remains unclear, but authorities denied foul play and rumours of a cyber attack.

Portuguese grid operator REN said there was a “very large oscillation in the electrical voltages, first in the Spanish system, which then spread to the Portuguese system”.