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Cuba Endures Nationwide Blackout as Havana Reports Partial Restoration

Officials attribute the collapse to a false signal at the Antonio Guiteras plant, with reconnection underway.

Archivo - Una calle a oscuras de La Habana, Cuba, durante un apagón
Veronica Hernandez prepares a candle in her home during a national power grid collapse, the fourth in less than a year, which caused a nationwide blackout, in Havana, Cuba September 10, 2025. REUTERS/Norlys Perez
Los prolongados cortes de electricidad tienen consecuencias devastadoras para la vida diaria de los cubanos. | Crédito: canva (imagen ilustrativa)
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Overview

  • Authorities confirmed a total disconnection of the national grid around 9:14 a.m. local time on Wednesday, leaving the island without power.
  • Energy officials said a false automatic/overheating signal at the Antonio Guiteras thermal plant triggered its shutdown, and an investigation is in progress.
  • State media reported roughly 80% service restored in Havana by Thursday morning, though systemwide reconnection continues and the Guiteras plant requires external power to restart.
  • Prime Minister Manuel Marrero said there is a defined plan to restore service, hospitals are operating on backup, and microsystems are supplying vital facilities; generation was under 10% of demand by mid‑afternoon Wednesday.
  • The outage adds to a prolonged power crisis, reported as the fourth or fifth nationwide collapse since late 2024, with scheduled cuts averaging nearly 15 hours in August and new solar parks not yet easing outages as traffic signals, water pumping and commerce were disrupted.