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Grid collapse due to failure of interconnection between Franco-Spanish grids

According to Spanish grid operator REE, the massive blackout which hit the Iberian Peninsula Monday was caused by a sudden and large drop in electricity supply, which caused the grid interconnection to trip between Spain France.

Energy Ministry, Monday evening, said that the network lost 15 gigawatts in just five seconds, at 1033 GMT. It did not explain the cause of the loss.

REE's System Operations Chief Eduardo Prieto informed reporters that the power outage was greater than what European systems were designed to handle. This caused the Spanish grid to be disconnected from the French grid, which led to the collapse the Spanish electricity system.

He said at a press conference that the electrical system had collapsed as a result of the disconnection, and the imbalance in band generation in our electrical system.

In his national address, Pedro Sanchez stated that the ultimate causes behind the massive power outage on Monday morning have not been identified by REE and no hypothesis has been ruled out.

The blackout, which lasted several hours, caused major disruptions throughout Spain and Portugal. On Monday evening, power was gradually restored to most parts of Spain and Portugal. (Reporting by Joan Faus, Inti Landauro and editing by Aislinn laing and Sonali paul)

(source: Reuters)