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.

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.

Cubans experienced their second black out wave Saturday after government officials said they were working to restore electrical service to hospitals and crucial service centers after a grid failure on Friday.