Cuba has had four electric grid collapses since Friday, and most of the country remains in the dark as slow progress is made to restore power.

Hurricane Oscar’s arrival to eastern Cuba Sunday impacted millions of residents already facing days without power, after fresh attempts to restore much of the nation’s electric grid failed. In the capital city of Havana early Monday,

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.