A massive power outage has knocked out electricity across huge parts of Spain and Portugal, shutting off traffic lights and causing chaos at airports, train stations and on the roads.

A major power outage has been reported in Spain and Portugal, including their capitals. Spanish generator RedElectrica said Monday the Iberian peninsula was affected, saying the incident is being assessed and responded to. The company said in a social media post that it was beginning to restore power in the north and south of the country.