#CubaBlackout is the English-language hashtag used across the 2024–2026 wave of nationwide power failures on the island of Cuba — most recently the sixth full grid collapse of 2026, which took the country offline on the night of Sunday, August 2, and then failed again during restoration on Monday, August 3, leaving roughly 10 million people rolling in and out of darkness. In Spanish the same conversation runs under #Apagón, and both tags surface on posts from residents, diaspora networks, and international reporters covering the country’s deepening energy crisis.
Quick Facts
- First nationwide collapse in the current wave: October 2024
- August 2026 event: grid disconnected late Sunday, August 2, 2026, causing a full nationwide blackout
- Number affected: approximately 10 million people (the entire island)
- Second collapse: within roughly 24 hours of the August 2 outage, during restoration
- August 3 restoration status (per state utility UNE): ~23% of Havana back online by Monday morning; ~50% of Havana and seven central/western provinces later in the day
- Nationwide collapses in 2026 alone (as of early August): six
- Primary failing plant: the Antonio Guiteras thermoelectric plant, offline for prolonged stretches in 2026
- Immediate August 3 obstacle: thunderstorms that state operator UNE said disrupted online generating units during restoration
Origin
Cuba’s power grid began suffering large-scale collapses in October 2024, when a full nationwide blackout knocked the island offline for days. From then through 2025 and into 2026, blackouts became progressively more frequent and more geographically total — Wikipedia now catalogs them together as the “2024–2026 Cuba blackouts.” The #CubaBlackout hashtag emerged in that first October 2024 wave and has been reused for each subsequent nationwide event.
What Happened (August 2026)
Late on Sunday, August 2, 2026, Cuba’s Unión Eléctrica (UNE) confirmed a total disconnection of the national electric system — the sixth nationwide collapse of the year. Reuters, NBC News, U.S. News & World Report and Al Jazeera all reported the outage plunged the island into darkness. Restoration began early Monday, but on August 3 the grid failed a second time as thunderstorms disrupted online generating units. CNN and U.S. News noted UNE was able to bring roughly a quarter of Havana back online by morning, expanding to about half of Havana and seven provinces later in the day, but the redundant collapse underscored how fragile the reconnect process is.
Reactions
Domestic and diaspora posts under #CubaBlackout and #Apagón dominated Cuban X and Facebook feeds through the outage. State media framed the crisis as a consequence of the U.S. embargo, with Havana blaming “decades of sanctions and trade restrictions” for limiting fuel imports and spare parts. Washington countered that the outages reflect the failures of Cuba’s state-run economic model. Reporters covering the outage on the ground described emptied streets, halted refrigeration, and generator noise in wealthier neighborhoods; the diaspora used the hashtag to solicit updates from family members without cell service.
Aftermath
As of August 3–4, 2026, the crisis remained ongoing. Cuba’s grid problems are structural — an aging fleet of thermoelectric plants (most prominently Antonio Guiteras, which has failed repeatedly through 2025 and 2026), fuel shortages tied to reduced imports from Venezuela and Russia, and chronic underinvestment in transmission. Analysts quoted across U.S. News, Al Jazeera and NBC News argued that without significant new generation and fuel supply, nationwide collapses will continue. The #CubaBlackout tag has become a recurring dateline for each new failure, and its frequency in 2026 — six full collapses by early August — signaled the deepest sustained energy crisis in the country’s post-Soviet history.
Sources
- https://en.wikipedia.org/wiki/2024%E2%80%932026_Cuba_blackouts
- https://www.usnews.com/news/top-news/articles/2026-08-02/cubas-national-electric-grid-collapses-plunging-island-into-darkness
- https://www.usnews.com/news/world/articles/2026-08-03/cubas-power-grid-collapses-again-during-restoration-efforts-after-nationwide-blackout
- https://www.aljazeera.com/news/2026/8/3/grid-failure-plunges-cuba-into-nationwide-blackout
- https://www.cnn.com/2026/08/03/americas/cuba-blackout-electrical-grid-collapse-intl-hnk
- https://www.local10.com/news/world/2026/08/03/cuba-begins-restoring-power-after-sixth-nationwide-electrical-grid-collapse-of-2026/
- https://www.nbcnews.com/world/cuba/cuba-plunges-darkness-electric-grid-collapses-rcna590542