The collapse follows nationwide blackouts last year that plunged Cuba's frail power-generating system into disarray.

Cuba’s power grid collapsed Friday night, triggering a nationwide power outage and plunging its more than 10 million people into darkness.

Cuba's national electrical grid collapsed late on Friday, the country's Energy and Mines ministry said, leading to widespread blackouts in the capital Havana and across the Caribbean island nation. Energy ministry officials said an electrical substation in Havana failed around 8:15 p.