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La Unión Eléctrica (UNE) reported that on December 24, 2025, a date when Cubans were hoping for at least a break for Christmas, the country once again experienced blackouts lasting 24 hours, with a maximum impact of 2015 megawatts (MW) at 6:30 p.m., a figure that exceeded official forecasts.
The official notice informs that the main cause of the energy collapse was the non-integration of the Unit 6 of the Mariel Thermoelectric Power Plant (CTE), which was meant to partially alleviate the deficit.
This was compounded by simultaneous breakdowns in units of the CTE Antonio Maceo (Santiago de Cuba), Mariel, and CTE Felton (Holguín), in addition to several plants undergoing maintenance or out of service due to a lack of fuel and lubricants.
Power outages have become chronic over the last five years, but in the second half of 2025, they have escalated, overshadowing Christmas celebrations across the country on December 24th.
The energy crisis in Cuba is a clear indication of the government's inability to ensure a stable electricity service, even on symbolic dates of great importance to the population.
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