The U.S. government, through the Office of Foreign Assets Control (OFAC), has issued a new series of directives explicitly banning the delivery of fuel originating from Russia to Cuba. This move places the island in a critical situation, just as its National Electric Power System (SEN) faces its highest historical vulnerability.

In recent weeks, Cuba has experienced six total collapses of its electrical grid, leaving millions of people without power for periods exceeding 15 hours a day. The announcement of the new U.S. sanctions comes as several oil tankers carrying Russian crude were sailing toward Cuban ports to alleviate the shortage.

A Blow to Fuel Logistics

The sanctions do not only affect Cuban entities but also impose severe risks on international shipping companies and insurers that facilitate the transport of Russian oil to the island. This “maximum pressure” strategy aims to cut off one of the few remaining supply lines for the Cuban government, following the decline in shipments from Venezuela and Mexico.

According to sector experts, the OFAC measure has forced several vessels to change their course in the middle of the Atlantic Ocean to avoid multi-million-dollar penalties. Without this fuel, the country’s main power plants, such as the Antonio Guiteras in Matanzas, lack the raw material necessary to operate stably.

Repercussions of the Total Blackout

The energy crisis in March 2026 has reached unprecedented levels. It is not just the lack of electricity; the fuel shortage paralyzes public transportation, the distribution of basic food items, and the functioning of essential hospital services.

The Cuban government has termed these measures a “genocidal blockade” aimed at suffocating the civilian population amidst a delicate humanitarian situation. For its part, Washington maintains that the sanctions are directed at limiting the regime’s resources and pressing for democratic changes.

Frequently Asked Questions

1. Why is the U.S. banning Russian oil to Cuba? Washington seeks to intensify economic pressure on the Cuban government while also limiting Russia’s revenues from hydrocarbon sales in the context of ongoing international sanctions.

2. What impact does this have on blackouts in Cuba? Direct and severe. Cuba depends on imported oil to generate more than 60% of its electricity. Without Russian crude, the power plants cannot maintain service, resulting in frequent national blackouts.

3. Are there other sources of fuel for the island? Cuba receives limited amounts from Mexico and Venezuela, but these supplies have been insufficient to cover national demand, exacerbated by the obsolescence of the electrical plants.

4. What is happening to the ships that were already on their way? Some Russian tankers have had to divert their routes toward other destinations in the Caribbean to avoid the embargo and OFAC sanctions.

For more information on the situation on the island, you can read about the emergency measures in hospitals or the impact of airlines suspending flights.

Sources: Infobae, EL PAÍS