Officials in Spain and Portugal are racing to restore electricity after a huge power outage that grounded flights, paralyzed metro systems, disrupted mobile communications and shut down ATMs, upending the lives of tens of millions of people and turning airports and train stations into campgrounds for stranded travelers.

A power outage caused chaos at a train station in Madrid, Spain, on Monday afternoon. Footage shows distressed passengers stranded and overcrowding the terminals on April 28. Officials said the electricity cut was part of a major grid failure that impacted large parts of Spain and Portugal.

Officials for the Madrid Open cancelled Monday's play amid a blackout in Spain that impacted the tournament's facilities. The blackout caused a number of logistical problems at Caja Mágica with the scoreboards going dark and the loss of lighting to help fans navigate the venue: