Cuba suffers fifth nationwide blackout of 2026 amid oil blockade

Millions of Cubans were plunged into darkness on Tuesday as the island experienced its fifth nationwide blackout of 2026. The outage, which affected an estimated 8 million people, coincided with a tightening of the United States’ oil embargo that has limited Cuba’s access to the fuel needed for its power plants.

Cuban officials attributed the blackout to a critical shortage of diesel and heavy fuel oil, supplies that have been curtailed by the U.S. blockade imposed in early 2024. Power generation, which relies heavily on imported fuel, was unable to meet demand, leading to a cascade of failures across the national grid. The blackout began at approximately 14:30 local time and lasted for more than six hours in the capital, Havana, with shorter outages reported in provincial centers. Health facilities were placed on emergency generators, while schools and public transportation were suspended. The government announced that emergency fuel shipments are being arranged through alternative partners, and engineers are working to restore full service by the following day. The United States, through its State Department, denied that the embargo is intended to disrupt civilian infrastructure, stating that the restrictions target only military-related imports.

Restoration efforts are ongoing, and Cuban authorities have urged citizens to conserve electricity while repairs continue. The incident highlights the vulnerability of the island’s energy system to external supply constraints and may prompt further discussion on diversifying energy sources and seeking additional international assistance.