Cuba Plunged into Darkness: Massive Blackout Grips Havana and Beyond On March 4, 2026, a crippling power failure at the Antonio Guiteras thermoelectric plant triggered a widespread blackout across western and central Cuba — including the capital, Havana — leaving millions without electricity amid the island’s worst energy crisis in years. The national grid buckled […] The post Cuba Plunged into Darkness: Massive Blackout Grips Havana and Beyond first appeared on The Zambian Observer .