A catastrophic failure at Cuba’s primary power generation facility has triggered a nationwide electricity crisis, leaving millions of citizens without power and exacerbating the island’s ongoing energy challenges. On Wednesday, March 5, 2026, the Antonio Guiteras Thermoelectric Power Plant experienced a critical boiler system leak that forced an emergency shutdown, resulting in the most severe blackout incident in recent Cuban history.
The technical malfunction at the country’s largest power generation unit caused a cascading failure throughout the national grid, affecting approximately two-thirds of the population. The capital city of Havana and numerous other regions experienced complete power loss, with the severity of the outage even causing state television broadcasts to temporarily cease transmission before resuming with delayed programming.
Energy authorities confirmed that engineering teams are working around the clock to address the boiler system damage, though officials have indicated that full restoration of the plant’s operations may require several days. The incident occurs against the backdrop of Cuba’s deteriorating energy infrastructure, characterized by aging power plants and chronic fuel shortages that have plagued the nation for months.
The current energy crisis has been further complicated by reduced oil shipments from Venezuela, a situation that Cuban officials attribute to the ongoing U.S. economic blockade that has restricted the country’s access to essential fuel supplies and maintenance equipment. These cumulative challenges have forced the government to implement severe rationing measures affecting public transportation and municipal services including waste collection, creating additional burdens on daily life across the island.