Cuba Grid Failure: Line Trips, Not Gunfire, Caused 8th Blackout of 2026

CUBA · ENERGY

The Spanish word “disparos” in early reports means automatic line trips. Officials link the failure to two central power lines, and restoration is slow.

The Cuba grid failure on Friday, 18 September 2026, began when two high-voltage lines in central Cuba switched off automatically. No official or major news source reports gunfire or an attack.

What officials say caused the Cuba grid collapse

Cuba’s Ministry of Energy and Mines (MINEM) announced a total disconnection of the national electric system on 18 September. It said recovery protocols were activated at once.

Félix Estrada Rodríguez heads the National Load Dispatch of the state utility, Unión Eléctrica (UNE). He said a failure in the high-voltage network in central Cuba brought down the whole system at 1:57 p.m.

Estrada said the set protocols were activated to restore the system step by step. He said the work needed careful technical control to avoid new setbacks during the process.

UNE said the 220 kV Matanzas–Cienfuegos line tripped first, and the Matanzas–Santa Clara line followed. The system first split into eastern and western zones, then shut down completely minutes later.

UNE later said it had identified unstable weather conditions in the area. It has not said this was the only reason the lines failed.

Why “disparos” does not mean gunfire

The independent outlet Diario de Cuba headlined its report “Disparos en dos líneas de transmisión”. In everyday Spanish, “disparo” means a gunshot.

In Cuban power-sector language, however, a “disparo” is the automatic switching-off of a line by its protection system. Diario de Cuba’s own text describes these protective trips, not shooting.

The same word appears in UNE’s official statement about the Matanzas–Cienfuegos line. Reports by the Associated Press (AP), EFE and state media also contain no mention of gunfire or sabotage.

On current evidence, the failure was a technical event. If new facts emerge, the picture could change, but none has been published so far.

How restoration is going

The first generating unit came back in Matanzas at 7:59 p.m. on Friday, CiberCuba reported. Five gas turbines at Energas Varadero were also feeding power into the system by Saturday.

Lázaro Guerra Hernández, MINEM’s director of electricity, said on Saturday morning that substations from Artemisa to Villa Clara had power again. Two units at Mariel and two at Santa Cruz del Norte were running.

He said the limited power goes first to hospitals and other vital services. Energized substations do not mean there is enough generation for all homes.

In Havana, 411,765 of 862,732 customers had power by 8:10 a.m. on 19 September, the utility reported. All the capital’s hospitals had service, and 13 of 18 main water pumping systems worked.

He said starting the Cienfuegos plant is slower than other units, so it will not join the system at once. Energy must reach Nuevitas before its units can restart.

Guerra said the fuel shortage slowed the recovery, so crews used domestic gas, crude oil and renewable energy. The next targets are the Nuevitas, Felton and Renté plants in the east.

The shutdown also damaged the boiler of the Antonio Guiteras plant in Matanzas, its director said. Crews expect to start repairs on Monday, 21 September, after cooling.

How many times the grid has failed in 2026

EFE counts eight total failures in 2026: two in March, three in July, two in August and this one. Diario de Cuba and CiberCuba give the same number.

Some international outlets call it at least the sixth or the seventh of the year. The reason for the gap is unclear, and no official tally has been published.

EFE reported that more than nine million Cubans lost power in this latest failure. That is almost the entire population of the island.

Why the Cuba grid collapse matters for expats and investors

For foreigners living in Cuba, the Cuba grid failure means problems with water, food storage and phone signal. The US Embassy advised citizens to keep phones charged and to store food, water and flashlights.

The embassy also said the cause was under investigation and the time for full restoration was unknown. Mobile and internet services were widely disrupted.

For businesses, the Guiteras repair matters most. The plant had run for 44 days at about 185 megawatts on average before the shutdown.

For investors and insurers, the cause also matters. A technical fault points to ageing equipment and fuel shortages, not to a security threat against the grid.

Across Latin America, Cuba shows how thin fuel supplies and old plants turn one fault into a national outage. Companies with Caribbean operations may want backup power plans.

What is still not known

UNE has not explained in full why the two lines tripped, beyond the weather conditions it mentioned. It has not given a date for full restoration.

It is also unclear how long the Guiteras boiler repair will take. Crews plan to begin inspecting it on Monday, and UNE continues to publish regular progress updates.

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Frequently Asked Questions

Frequently Asked Questions

Did gunfire cause the blackout in Cuba?

No official or major news source reports gunfire. “Disparos” in Spanish grid reports means automatic line trips, which UNE says started the failure.

How many people lost power?

EFE reported that more than nine million Cubans lost power, almost the whole island.

Is this the eighth national blackout of 2026?

EFE, Diario de Cuba and CiberCuba count eight. Some international outlets give six or seven, and no official tally has been published.

Sources: Cuban Ministry of Energy and Mines and Unión Eléctrica via Cubadebate, 18–19 September 2026; EFE; Diario de Cuba; CiberCuba; Associated Press; US Embassy in Havana.