The blackout was a consequence of a “very strong oscillation in the power flows in the networks” which caused the disconnection of the peninsular system with France and MoroccoOnly when cross-border links were established could the supply be gradually restored, allowing power to be returned to the grid. By late Monday, power had already been restored to the country's main urban centers, and the Spanish grid operator, Red Eléctrica Española, stated that by 7 a.m. Tuesday, almost 100% of power demand had been restored.
The massive power outage caused the cancellation of 700 flights and forced thousands of travelers to spend the night in train stations and other accommodations provided by the authorities.
The Spanish Ministry of the Interior declared a national emergency and deployed 30.000 police officers across the country to maintain order, although no public disturbances have occurred. At the time of writing, the causes of the massive blackout are still unknown, although initial reports point to a loss of power generation in southwestern Spain that destabilized the national system. According to initial estimates published by Bloomberg, the power outage could have an economic impact of around 0,5% of quarterly GDP, although it is still too early to know its true extent.
Source: CESCE





