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.

This was the third full collapse of the country’s energy grid since Friday. Recovery efforts will be complicated further by the arrival of Hurricane Oscar on Sunday.

In parts of Cuba, the electric power supply was restored on Sunday after a widespread failure. Despite this, around 80% of residents still don't have electricity. The energy minister warns that the situation may worsen due to the approaching hurricane.

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.

A hurricane was approaching Cuba Sunday as the island nation's authorities struggled to restore power following a massive nationwide outage. The expected arrival of Hurricane Oscar, just days after the failure of Cuba's largest power plant crippled the national grid,

Cuba’s government reports it has made progress in re-establishing electrical service to parts of the island, which remains mostly shrouded in darkness. Parts of the capital Havana and some hospitals have had their electricity restored after the national grid collapsed twice in a span of 24 hours,

Many Cubans waited in anguish and some took to the streets in protest as widespread blackouts stretched into their third day

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.

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

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,

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.