Guantánamo province disconnected from the national electrical system, causing a massive blackout, due to a trip on the 110 kV line on December 29, 2025, between 11:16 AM and 2:16 PM UTC, according to a post on X by MagJorgeCastro. The outage left the entire province without power, as reported in the urgent alert shared during the three-hour reporting window. MagJorgeCastro's post highlighted the sudden disconnection from the electrical grid. No further details on restoration efforts or affected infrastructure were available from sources within the period.
