BARCELONA, Spain (AP) — A blackout brought much of Spain and Portugal to a standstill Monday, halting subway trains, cutting phone service and shutting down traffic lights and ATM machines for the 50 million people who live across the Iberian Peninsula.

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.