Cuba's capital Havana and approximately two-thirds of the country experienced a major national power outage on Wednesday, March 4, 2026, according to Swedish media reports. The blackout was reportedly caused by a technical fault at one of Cuba's largest energy facilities. The outage affected central and western regions of the island most severely, with Havana plunged into darkness.
The incident occurred amid what sources describe as an acute energy shortage that has plagued Cuba for weeks. The energy crisis has been attributed to US sanctions targeting the country and political developments in Venezuela that have disrupted oil deliveries to Cuba. Cuba's state energy company Une confirmed the widespread power failure, which left large portions of the country without electricity.