In Brief:

Cuba’s electrical grid has experienced widespread failures as oil imports have dropped 89% due to ongoing US sanctions and the economic blockade. The dramatic reduction in fuel supplies has left the island nation struggling to generate sufficient electricity for its population. Power outages have become increasingly frequent across Cuba, affecting hospitals, businesses, and households.

Island nation’s power infrastructure collapses following sharp decline in petroleum deliveries since January sanctions tightening.

Cuba’s electrical grid died completely Tuesday, plunging 11.2 million people into darkness as oil imports crashed from 96,000 barrels per day in December to just 10,500 barrels in February. Brent crude futures jumped 2.3% to $84.67 per barrel on the news. The supply crisis exposes how vulnerable Caribbean energy security has become as Washington tightens sanctions enforcement against vessels serving sanctioned economies.


Numbers don’t lie when it comes to Cuba’s energy nightmare. Cuban state utility UNE reported just 4.2 days of reserve crude left by Tuesday evening — down from the 45-day strategic buffer they’d maintained through 2023. That’s a staggering drop. Hours earlier, the grid’s creaking Soviet-era infrastructure began its death spiral when utilities tried substituting lighter distillates for the heavy fuel oil it was designed to burn.

Cuban Crude Supply by Country

Cuban Crude Supply by Country — Delima News Data

Three supply routes kept Cuba’s lights on until this year. Venezuelan shipments — 68% of Cuban crude — stopped completely after January 15th when Treasury went after fourteen tanker operators. Russian exports that provided 24% of pre-sanctions volumes? They vanished after Rosneft subsidiary vessels got detained in Panama Canal transit zones. Mexico’s Pemex still delivers the remaining 8%, but that won’t keep the lights on.

Venezuela’s own oil troubles make Cuba’s crisis worse. OPEC+ data shows Venezuelan output fell 340,000 barrels per day to just 760,000 in the latest quarter, while international buyers increasingly won’t touch Venezuelan crude. Compliance costs now average $2.3 million per cargo in legal and insurance premiums. The timing couldn’t be worse for Havana.

Treasury didn’t stop at targeting tankers — they went after the money trail. The Office of Foreign Assets Control now targets third-country banks that process Cuban energy transactions, creating secondary boycotts that freeze out entire financial networks. European refiners say compliance costs for Cuban-related deals jumped 780% since December. Nobody wants that headache.

Yet this grid collapse isn’t just Cuba’s problem. Iran’s power sector, choking under similar restrictions and spare parts shortages, runs at just 67% of design capacity. The math is sobering. Cuba needs 180,000 metric tons of heavy fuel oil monthly just to keep its six thermal plants running at 2,880 MW capacity — current stocks last maybe 72 hours.

Caribbean energy markets felt the shock immediately. Spot diesel prices shot up 8.7% Tuesday as utilities from Puerto Rico to Trinidad scrambled for supplies, fearing the crisis would spread. Dominican Republic’s state utility boosted emergency fuel buying by 340%. Jamaica activated crisis protocols expecting refugee flows to spike electricity demand.

Still, the human cost cuts deepest — 2.8 million households without power for refrigeration, water pumping, or life-support equipment. The economic fallout suggests this crisis will destabilize the entire region as energy becomes a weapon wielded through financial pressure rather than gunboats.

Financial warfare has replaced naval blockades. The result looks the same from space — an island gone dark. Nobody’s saying this publicly, but every energy minister in the Caribbean is updating their emergency playbooks tonight.

Why It Matters

Cuba’s grid failure demonstrates how modern sanctions target energy infrastructure through financial mechanisms rather than direct supply interdiction, creating humanitarian crises while testing regional energy security frameworks. The crisis reveals Caribbean vulnerability to petroleum supply disruptions and signals potential replication across other sanctioned economies with aging power infrastructure.

Havana remains without electricity following Cuba’s national grid collapse amid severe oil supply shortages.

Cubaoil sanctionspower gridenergy crisisOPEC
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Clara Vance
Commodities & Energy Editor
Former energy trader. Based in London covering oil markets, rare earth minerals, and green hydrogen economics.

Source: Original Report