Cuba's efforts to restore power to the island were derailed for a third time late on Saturday, Cuban authorities said shortly before midnight, leaving millions in the dark and raising fresh questions over the viability of the government's bid to reestablish electrical service.

Cuba’s government says some electricity has been restored on the island after one of the country’s major power plants failed and left millions without electricity in an outage that started two days earlier.

Cuba restored a trickle of power to its grid by mid-evening on Friday, officials said, hours after the island plunged into a countrywide blackout following the collapse of one of its major power plants.

Cubans expressed alarm, with one resident saying it felt as if the country had reached the “bottom of the barrel.”

Cuba was struggling to restore electricity nationwide on Saturday, more than 24 hours after the failure of one of its largest power plants knocked the entire grid off-line.

Millions of Cubans were left without power on Friday after a failure at a power plant, the communist government said.

The Cuban government had just announced emergency measures to reduce electricity use — then the power went out across the entire nation.