On March 4, 2026, a significant power outage struck Cuba, impacting various regions including the capital, Havana. The state electric utility, Union Electrica (UNE), reported that the blackout was triggered by an unexpected failure at the Antonio Guiteras thermoelectric plant, located approximately 100 km (62 miles) east of the city. This disruption has cut electricity across the island, from Pinar del Rio in the west to Camaguey province in the east.

Officials indicated that power outages were also reported in Las Tunas, where malfunctioning substations contributed to the blackout. They estimate that repairs to the Guiteras plant could take three to four days.

Cuba has faced a series of major blackouts in recent years, and the current crisis has been compounded by the Trump administration's ongoing efforts to curtail oil supplies from key suppliers like Venezuela. Many Cubans have attributed their economic woes to decades of economic sanctions imposed by the U.S., which have limited investment in infrastructure and energy generation.

In light of existing fuel shortages, the Cuban government has begun rationing essential services, affecting health care, transportation, and waste collection. Residents in urban areas have adapted by utilizing solar panels or generators; however, the persistent blackouts remain a strain on everyday life.

Local sentiment expressed during the blackout highlighted frustration with the frequency and severity of power outages. One young engineer stated, “The SEN (electrical grid) going dark should not be considered normal.”

As Cuba navigates this ongoing crisis, the situation illustrates the complex interplay of geopolitical tensions and their impact on civilian life, leaving many wondering what the future holds for the island's energy stability.