Cuba's electrical grid collapses again, plunging island into darkness

Cuba's electrical grid suffered a total collapse on September 18, 2026, plunging millions into darkness. The failure, triggered by transmission line issues, marks the latest of at least six grid collapses since January 2026. Authorities have initiated restoration protocols, but only a fraction of Havana has regained power. The crisis is severely exacerbated by a U.S. oil blockade that restricts fuel imports and replacement parts, drawing condemnation from UN experts who warn of a humanitarian crisis.

Cuba nationwide grid collapse

• ▪Cuba's National Electrical Union official Felix Estrada announced that service-restoration protocols were activated following the nationwide power grid collapse on September 18, 2026.
• ▪Cuban authorities established small power-distribution micro-islands in Camagüey, Pinar del Río, and Granma provinces to assist in restoring the electrical system.
• ▪By the evening of September 18, 2026, power was restored to 5% of electricity users in Havana, primarily around hospitals and emergency facilities.
• ▪Cuba's electrical grid suffered a total collapse on Friday, September 18, 2026, leaving millions of residents across the island without power.
• ▪Cuba's September 18, 2026, grid collapse was triggered by a failure in high-voltage transmission lines in central and western Cuba around 2 p.m. local time

US oil blockade effects

• ▪The United States energy blockade has prevented Cuba from importing replacement parts needed to maintain its aging electrical infrastructure.
• ▪Since the United States oil blockade began in January 2026, Cuba has received only one fuel delivery, which arrived on a Russian tanker in March 2026.
• ▪A United States-imposed oil blockade on Cuba starting in January 2026 has restricted fuel imports required to operate the island's thermoelectric power plants.

Fuel shortages worsening blackouts

• ▪The nationwide blackout on September 18, 2026, is the latest of at least six partial or total grid collapses in Cuba since January 2026.
• ▪Prior to the September 18, 2026, collapse, Cuba's national electrical grid collapsed three times in July 2026 and twice in early August 2026.
• ▪Even when Cuba's national power grid is operational, residents endure rolling blackouts lasting more than 30 consecutive hours.

Aging infrastructure failures

• ▪Unstable weather conditions on September 18, 2026, further aggravated the situation of Cuba's electrical grid, according to the official newspaper Granma.
• ▪Cuba's aging power generation system has faced severe strain from decrepit infrastructure and chronic fuel shortages for years.

Daily life disruption

• ▪The power outages in Cuba since the September 18, 2026 grid collapse have disrupted basic daily activities, including cooking, water supply, and internet and telephone services
• ▪The ongoing electrical blackouts in Cuba have caused transportation limitations, reduced work hours, flight cancellations, and serious public health consequences.

UN international law condemnation

• ▪United Nations human rights experts condemned the United States oil blockade on Cuba, calling it a violation of international law.
• ▪United Nations human rights experts warned that Cuba risks becoming a 'silent Gaza' as shortages and blackouts grow increasingly critical.

Debatable claims

• ▪The United States should end its energy blockade against Cuba
• ▪The United States is primarily responsible for Cuba's electrical grid collapse