Electricity is pulsing through Spain and Portugal again after a massive outage knocked out power for the entire

Electricity was restored to almost all of Spain and Portugal on Tuesday morning following a massive power cut affecting the entire Iberian Peninsula, but the cause of the blackouts remained a mystery.

Renfe, Spain's national railway company, said on social media that the "entire national electricity grid was cut off" at 12:30 p.m. local time. It brought parts of Spain and Portugal to a standstill,