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.

HAVANA — Cuba on Friday was racing to restore electricity after the failure of the island's biggest power plant caused a nationwide blackout, coming on the heels of weeks of extended outages across the cash-strapped country.

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.

Cuba's government said late on Saturday it had restored power to nearly one-fifth of the island's people after the national grid collapsed twice in 24 hours, plunging millions of people into darkness.

Millions of Cubans faced a third consecutive day without power as a hurricane loomed over the island nation Sunday. Sixteen percent of the country had power restored Saturday but attempts to restore it more widely failed overnight,

Many Cubans are waiting in anguish as electricity on much of the island has yet to be totally restored after days of blackout.

Electricity has been restored to almost 90 percent of Havana, the Cuban capital's energy supplier reported Monday, but several provinces remained without power four days after the start of a

He also recognized that Oscar, which hit the island's eastern coast Sunday evening, will bring "an additional inconvenience" to Cuba's recovery since it will touch a "region of strong (electricity) generation.