About half of Cuba was plunged into darkness on Thursday evening, followed by the entire island on Friday morning after the failure of the Antonio Guiteras thermoelectric plant in Matanzas Province east of Havana.

Many Cubans waited in anguish Sunday as electricity on much of the island had yet to be restored days after an island-wide blackout. Their concerns were also raised as Hurricane Oscar made landfall in the southeastern Bahamas and was heading toward their country.

Millions of Cubans awoke on Sunday to find their homes still without power after another partial grid failure overnight, deepening a crisis that has raised questions over the viability of the government's efforts to reestablish electrical service.