Cuba's power-grid operator said it had restored electricity to most of the capital Havana on Monday even as Tropical Storm Oscar lashed the island's eastern end, downing trees and power lines.

Tropical Storm Oscar doused Cuba on Monday, three days after a massive power failure plunged more than 10 million people into the dark as the island worked to restore its decades-old power grid.

The fourth such failure in 48 hours raised fresh doubts about a quick fix on an island already suffering from severe shortages of food, fuel and medicine.

Cuba's power grid has ground to a halt for a second time in as many days, leaving 10 million on the island without power and the Caribbean island in a growing sense of crisis.

MIAMI: The Cuban people have been left in the dark after their nation's electrical grid collapsed Friday. "It was really frustrating because we don't know how long it will last," Omar McKenzie, a Cuban resident in Havana told CBS News Miami.

Cuba's power-grid operator said it had restored electricity to parts of the capital Havana on Monday following a fourth major grid failure in 48 hours, while Tropical Storm Oscar lashed the island's eastern end.

Cuba has repeatedly failed to bring its electrical grid back up as a result of fuel shortages and deteriorating infrastructure, threatening a social explosion.

Cuba's electrical grid collapsed again on Sunday, the fourth such failure in 48 hours, with a hurricane making landfall to compound the island's misery and threaten further havoc on its decrepit infrastructure.

Photos emerging from Cuba show not only the unrest, but residents continuing to lives their lives even amid the indefinite power outages.