Cuba remained largely without power on Saturday morning after the island´s grid collapsed the night before, knocking out electricity for 10 million people and raising fresh questions about the viability of its antiquated generating system.

The collapse plunged the island nation of more than 11 million people into total darkness. It's the latest in a series of failures in the country's creaking, soviet-era infrastructure.

Cuba experienced a nationwide blackout on Friday due to a failure at the Diezmero substation, marking the third major grid collapse in two months. Off