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.

Millions of people in Cuba remained without power Saturday after a failure of the nation's electric grid left the island in the dark the previous night. The blackout is the fourth in the last six months as a severe economic crisis plagues the Caribbean country.