Cuba was plunged into darkness late Sunday after the country's national electricity grid collapsed, leaving millions of people without power.
State-owned grid operator Unión Eléctrica (UNE) confirmed the nationwide outage, saying efforts were underway to restore electricity.
The blackout affected the island nation of about 10 million people, disrupting homes, businesses and essential services. Authorities have not yet disclosed the cause of the grid failure.
The incident adds to Cuba's ongoing energy challenges, which have been marked by aging infrastructure, fuel shortages and recurring power outages.
