The lights are mostly back on in Spain, Portugal and southern France after a widespread blackout on Monday.
The blackout caused chaos for tens of millions of people. It shut down traffic lights and ATMs, halted public transport, cut phone service and forced people to eat dinner huddled around candles as night fell. Many people found themselves trapped in trains and elevators.
Spain’s prime minister, Pedro Sánchez, has said the exact cause of the blackout is yet to be determined. In early reporting, Portugal’s grid operator REN was quoted as blaming the event on a rare phenomenon known as “induced atmospheric vibration”. REN has since reportedly refuted this.
