About half of Cuba was plunged into darkness on Thursday evening, followed by the entire island on Friday morning after the failure of a thermoelectric plant.

Cuba's power grid has ground to a halt for a second time in as many days, leaving 10 million on the island without power and the Caribbean island in a growing sense of crisis.

Cuba`s electrical grid collapsed again early on Saturday morning, state-run media reported, plunging the entire country into blackout for a second time just hours after authorities announced they had begun reestablishing service.