Cuba Suffers Its Sixth National Blackout of 2026 in August

Cuba's state utility Unión Eléctrica (UNE) confirmed on the night of Sunday, August 2 a new collapse of the National Electro-Energy System (SEN), the sixth island-wide blackout so far in 2026, according to unoTV. The state company announced the failure on social media without immediately specifying its cause or a timeline for restoration, Al Jazeera reported.

The latest outage came one day after a partial blackout in western Cuba, including Havana, which UNE declared restored shortly after 1:00 a.m. local time. In July, the grid collapsed three times in nine days, two of them at national scale, according to Al Jazeera, and one of those outages left approximately 10 million people without electricity, according to Reuters. Cuba's generation fleet relies on thermoelectric plants that in several cases have been operating for more than 30 years with limited maintenance, against a backdrop of fuel and spare-parts shortages that UNE has identified as the central cause of the outages.

"A total disconnection of the National Electro-Energy System has occurred," the company stated, with restoration proceeding in phases: isolated networks for hospitals, water systems, and food centers before reconnecting major plants. Before the full collapse, Havana's electricity company had already reported outages caused by damaged transformers and circuit failures, with dozens of unresolved complaints in municipalities including Guanabacoa, Habana del Este, and Marianao. The Cuban government attributes the crisis to the U.S. energy blockade, in effect since January, which restricted Venezuelan crude supply (Cuba's primary provider) and halted imports from Mexico; other analyses cite decades of underinvestment in the sector, Al Jazeera noted. The disruptions extend to transport, water pumping, communications, and food preservation on an island of approximately 10 million inhabitants.

UNE expects to restore service in phases, and authorities have not provided a timeline for full recovery. The signal to watch is whether the SEN consolidates its recovery or repeats the July cycle, when three collapses in nine days left the island partially without power.

This article was drafted with artificial intelligence assistance from verified sources and reviewed by a human editor before publication.