In 2026 Cuba lost power after its national electrical system (SEN) experienced a total disconnection, effectively shutting down the grid across the island. Although officials did not specify the precise technical cause, such events typically occur when a failure at a critical point triggers a cascading collapse of the system. These outages have become increasingly frequent as Cuba’s power infrastructure faces severe strain from aging facilities, fuel shortages, and prolonged economic crisis, leaving little capacity to absorb disruptions. External pressures, including U.S. sanctions that restrict access to fuel and resources, have further exacerbated the situation, contributing to repeated nationwide blackouts.
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