Several airports, including Madrid airport, which is Spain's busiest, had no electricity, El Mundo reported. Major cities including Barcelona, Seville and Valencia were without power. Parts of France were also affected by power loss.

Power outage in Spain, Portugal, and France sparked worries about grid stability. While many took to social media to share amusing memes about the event.

Spanish power distributor Red Eléctrica said that restoring power to large parts of the country after a massive and umprecedented outage Monday that also hit Portugal could take 6-10 hours. The company declined to speculate on the causes of the blackout.