A significant power outage on Monday caused widespread chaos in Spain, Portugal, and parts of southern France, affecting millions of people. The blackout disrupted transportation and communication systems, leading to people being stranded in subway stations and numerous flight cancellations. Authorities are currently investigating the cause of the outage, which impacted critical infrastructure and forced selective power cuts to stabilize the network. The incident highlights the vulnerability of the power grid and the need for robust contingency plans to prevent such widespread disruptions in the future.