Cuba's Grid Collapses Twice in 24 Hours, Fifth Nationwide Blackout of 2026

Cuba's national grid went dark again this week, and this time it happened twice in under 24 hours.

The island's electrical system, known as the SEN, collapsed late Sunday night, August 2. Crews from the state utility Union Electrica de Cuba (UNE) spent Monday trying to bring it back online, reconnecting units at the Energas gas-fired plant in Boca de Jaruco and re-energizing substations around Havana. By Monday morning about 23 percent of Havana had power back, according to Cuban authorities cited by Al Jazeera.

Then it collapsed again Monday afternoon, wiping out that progress.

That makes five nationwide blackouts in 2026 and the second one in less than 24 hours, according to Reuters, the Straits Times and IBTimes. It's the fourth total grid failure in under a month, following three separate collapses packed into a nine-day stretch in July.

What Cuban Officials Say Went Wrong

State television journalist Lazaro Manuel Alonso, cited by both Al Jazeera and the Straits Times, said "a fluctuation caused the collapse" on Monday. UNE followed up with a statement carried on state media blaming weather: "During the process of restoring the SEN, existing weather conditions caused disruptions to the grid, directly affecting generating units that were online."

Granma, the Communist Party's official newspaper, pointed to thunderstorms and heavy rain in western Cuba as the trigger, according to Breitbart's reporting on the same UNE statement.

None of the state-linked sources gave a restoration timeline for Monday's second collapse, and UNE's initial announcement of the outage, posted on Facebook and X, didn't specify a cause, scope, or timeline either, according to Al Jazeera and the Straits Times.

The Underlying Mechanics

Cuba's thermal generating fleet is the core problem, not the weather. The country runs on seven aging thermoelectric plants, some more than 30 to 40 years old, according to Breitbart and IBTimes. Chronic fuel shortages and a lack of spare parts have left the system barely able to hold together on a good day, let alone survive a storm.

When the grid fails completely, Cuban authorities typically try to rebuild it in pieces, standing up small isolated networks to power hospitals, water systems and food facilities before gradually reconnecting bigger generating plants, according to IBTimes and Al Jazeera. In the two prior nationwide blackouts in July, full restoration took more than 24 hours each time.

Most Cubans, per Al Jazeera, now get only a few hours of electricity a day even when the grid isn't fully collapsed.

The Blame Fight

Cuban President Miguel Diaz-Canel has accused Washington of trying to trigger "a social explosion through asphyxiation" via the decades-old U.S. embargo, according to IBTimes. Cuba lost a critical fuel lifeline after the United States captured Venezuelan President Nicolas Maduro in January, cutting off oil shipments from Havana's closest ally, and Mexico separately halted its own oil exports to Cuba under U.S. pressure, IBTimes reported.

A State Department official countered that the blackouts reflect the "failing regime's incompetence," not U.S. policy, according to IBTimes. The Trump administration says its sanctions exist to pressure Havana into holding democratic elections and releasing political prisoners.

The embargo genuinely restricts Cuba's access to fuel, financing, and the spare parts needed to keep 1960s-vintage power plants running. That's a real constraint, not a talking point. But Cuba's government has had six decades to build a functioning grid and chose instead to let seven aging plants run into the ground without renovation, a pattern that predates the current sanctions regime and continued even during periods when Cuba had access to subsidized Venezuelan oil. Sanctions make repairs harder, and decades of state mismanagement made the system fragile enough that a thunderstorm can take down power for 10 million people.

What Reuters and Al Jazeera Add That Others Missed

Al Jazeera's report, drawing on Reuters, included a detail others left out: before Sunday's total collapse, Havana's electricity company was already logging dozens of unresolved outage complaints in specific neighborhoods, Guanabacoa, Habana del Este, La Lisa and Marianao, tied to damaged transformers and circuit failures. That's the texture of daily life in Cuba right now: rolling local outages stacking on top of nationwide collapses, not one clean crisis but two overlapping ones.

Scattered protests have broken out over the blackouts this year, according to IBTimes, though the extent and locations weren't detailed in available reporting. Cuban state media, notably, has continued broadcasting uninterrupted through all five nationwide failures this year, a detail Breitbart specifically flagged.

The open question is how UNE gets Monday's collapse resolved without a sixth failure hitting before the month is out. Nothing in current reporting says the fundamental problem, seven worn-out thermal plants with no fuel and no spare parts, has changed.