Trains, traffic lights, card payments, and phone networks have been hit - officials say restoring power will take hours.

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.

By Emma Pinedo, Catarina Demony and David Latona MADRID/LISBON (Reuters) -Power started returning to parts of the Iberian peninsula late on Monday after a huge outage brought most of Spain and Portugal to a standstill,