A significant power outage has plunged large areas of Spain and Portugal into chaos, affecting millions and disrupting transport systems, communication networks, and daily activities in both countries. The outages have especially impacted the capitals, Madrid and Lisbon, leading local authorities to advise residents to stay indoors. The Madrid Open tennis tournament faced major disruptions, with multiple matches suspended due to the blackout. Officials are currently investigating the cause of the widespread outages, which have also affected parts of France. As recovery efforts begin, residents and travelers are urged to stay updated on the situation.