The Iberian Peninsula blackout that left 60 million people without power in April resulted from cascading power spikes and the electricity grid's inability to automatically absorb sudden power losses, EU technical experts reported Friday.
The April 28 incident which resulted in a total loss of the power supply disrupted metro networks, traffic lights, air traffic, mobile services and emergency systems in Portugal and Spain, in what experts called Europe's "most significant power system event" in over two decades.
