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.

Cuba suffered a massive power outage Friday night affecting Havana and the country's provinces that left millions in the dark. Cuba's Ministry of Energy and Mines said at around 8:15 p.m. local time an outage at the Diezmero substation on the outskirts of Havana had caused "a significant loss of generation in western Cuba and,