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The National Electric System (SEN) of Cuba started this Tuesday facing one of its most critical days of the year: according to the daily report from the Electric Union, at 06:00 hours, the availability was only 970 MW against a demand of 2,525 MW, with 1,555 MW already affected since the early morning.
For the peak nighttime hours, the forecast is devastating. The UNE estimates a capacity of only 1,030 MW against a maximum demand of 3,000 MW, resulting in a deficit of 1,970 MW. "If the expected conditions persist, an impact of 2,000 MW is predicted during this time," warns the official report.
The previous day was not any better. The UNE confirmed that "the maximum impact due to generation capacity deficit yesterday was 2,018 MW at 8:50 PM" and that the service was interrupted for 24 hours, including throughout the night.
In Havana, the capital's Electric Company reported that on Monday the service was also interrupted for 24 hours, with a peak impact of 422 MW at 8:00 PM. It was necessary to shut down circuits for emergency reasons, adding an additional 128 MW, and by the time the report was closed, five blocks and emergency circuits were still affected by 372 MW. "It was not possible to restore the service," the company acknowledged in its Facebook publication.
The most destructive factor in the system remains the lack of fuel. According to UNE, 106 distributed generation plants are out of service for this reason, totaling 890 MW. The Patana de Regla, Patana de Melones, Central Fuel of Mariel, and Central Fuel of Moa are also inactive. The total unavailable MW due to fuel amounts to 1,203 MW.
In addition to fuel-related breakdowns, mechanical failures are also an issue. The Máximo Gómez CTE Unit 6 is out of service due to a malfunction, along with one unit from the Antonio Guiteras CTE, Unit 2 from the Lidio Ramón Pérez CTE, and Unit 6 from the Antonio Maceo CTE. Thermal generation limitations account for an additional 289 MW out of service.
The CTE Antonio Guiteras, the largest thermoelectric plant in the country, went offline from the National Electric System again on Monday due to a new leak in the boiler, accumulating its 15th breakdown or outage of the year. It had briefly returned last Thursday after a repair but failed again in less than 72 hours.
As the only partial relief, the 54 photovoltaic solar parks contributed 3,877 MWh on Monday, with a peak power of 547 MW at noon. However, solar generation does not address the nighttime deficit, which is when demand reaches its highest point.
The only improvement expected for tonight is the entry of unit 3 of Energás Boca de Jaruco with 30 MW and the completion of its Combined Cycle with another 30 MW, a contribution that is marginal compared to a projected deficit of nearly 2,000 MW.
The June crisis is part of a sustained deterioration: the SEN experienced a total disconnection on March 16, 2026, with a restoration that took 29 hours and 29 minutes, and in May, record deficits of 2,153 MW and 2,174 MW were recorded on consecutive days.
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