Cuba Restores National Power Grid From Pinar del Río to Guantánamo

Cuba's National Electroenergetic System (SEN) was successfully reconnected Sunday night, spanning the entire island from the western province of Pinar del Río to Guantánamo in the east, according to the Electric Union (UNE).

Prime Minister Manuel Marrero expressed appreciation to the country's electrical workers on X for restoring service at the national level.

"Through the efforts of our electrical workers, the SEN has been restored. Thank you to those who put forth their full commitment to overcome the energy blockade and rise to meet the challenges," Marrero wrote.

The collapse of the SEN, which occurred Saturday evening, originated with the failure of unit six at the Nuevitas power plant in Camagüey, triggering a cascading effect across the other generating units on the network. Authorities then implemented a gradual recovery protocol based on the activation of micro-islands and micro-systems, prioritizing critical facilities such as hospitals and water supply infrastructure.

Technical specialists noted that grid restoration is a slow and complex process, beginning with fast-start sources — solar installations, hydroelectric plants, and distributed generation motors — before progressively interconnecting energized areas into a unified national network.