A widespread power outage has plunged millions across Cuba into darkness after a major breakdown at one of the country’s key thermoelectric plants, exposing the fragile state of the island’s energy infrastructure. Large parts of the country, including the capital Havana, experienced electricity cuts as authorities scrambled to restore the national grid. The blackout has intensified concerns over Cuba’s worsening fuel shortage and ageing power system, which have led to frequent outages in recent years.

Power plant failure triggers nationwide disruption

The outage was reportedly caused by a sudden shutdown at the Antonio Guiteras thermoelectric plant, one of Cuba’s most important power stations and a critical part of the national electricity network. When the plant unexpectedly went offline, it triggered a chain reaction that destabilized the power grid across large sections of the island.

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Cities and towns across several provinces experienced prolonged electricity cuts, leaving homes, businesses and public facilities struggling to function. Many residents reported hours of darkness, while authorities rushed to stabilize the grid and gradually restore electricity to affected areas.

Essential services were also impacted. Hospitals, water pumping stations and transport services faced disruptions, forcing local authorities to rely on backup generators and emergency measures to maintain critical operations.

Energy crisis deepens amid fuel shortages

The blackout has once again highlighted the severe energy challenges facing Cuba. The country relies heavily on imported fuel to run its power plants, but shipments have declined sharply in recent years.

Supplies from long-time ally Venezuela, once a key source of subsidized oil, have reduced as Caracas faces its own economic difficulties. At the same time, restrictions linked to the decades-long United States embargo have made it harder for Cuba to secure alternative fuel sources on international markets.

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Compounding the crisis is the ageing state of Cuba’s electricity infrastructure. Many power plants were built decades ago and suffer frequent technical failures, leading to repeated outages that disrupt daily life and economic activity.

For many Cubans, rolling blackouts have become increasingly common, particularly during periods of high electricity demand. The latest outage underscores the scale of the country’s energy crisis and the urgent need for long-term solutions to stabilise the island’s power supply.