Electricity service resumed early Sunday after a transmission fault caused widespread outages across western Cuba.

Cuba restored its National Electric System (SEN) across the country’s western region early Sunday after a partial grid failure triggered widespread power outages, the state-run Electric Union (UNE) said.

RELATED: Partial Grid Failure Leaves Five Western Cuban Provinces Without Power

The system was fully restored at 1:10 a.m. local time, several hours after the outage began at 6:07 p.m. Saturday when 220-kilovolt transmission lines in Matanzas and Cienfuegos provinces, as well as the line linking Matanzas and Villa Clara, tripped, disrupting electricity supply throughout western Cuba.

As restoration efforts progressed, UNE said Units 1 and 3 of Energas Varadero had been synchronized with the national grid.

01:10 am. Restablecido el Sistema Eléctrico en el occidente del país. pic.twitter.com/oF8TT9W1Mr

— Unión Eléctrica de Cuba (@OSDE_UNE) August 2, 2026

Text Reads: 01:10 am. Electricity System Restored in the western part of the country.

The utility also reported that Unit 5 of the Máximo Gómez thermoelectric plant in Mariel, Units 1 and 2 of the Ernesto Guevara thermoelectric plant in Santa Cruz del Norte, and the combined-cycle unit at Energas Boca de Jaruco were in the startup phase.

In recent days, Cuban Energy and Mines Minister Vicente de la O Levy said repeated failures of the National Electric System were not caused by operational shortcomings but by the conditions facing the country’s electricity sector as a result of the tightening of the United States blockade.

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