It may take a week for the network servicing both countries to be fully repaired. Meanwhile, millions are without power.

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.

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.