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Redeia: Solar plant mismanagement left Spain's grid vulnerable to blackouts on blackout days

According to Redeia's chair, the owner of grid operator REE, the mismanagement of a large plant of solar panels in southwest Spain left the power system of the country more vulnerable when a major blackout struck the Iberian Peninsula on April 28.

The power outage in Spain and Portugal paralyzed many areas for several hours. This prompted numerous investigations by the government, energy watchdogs, and the grid and power companies.

Beatriz Corredor, who spoke at a Senate hearing Thursday, said: "We have evidence that shows that the extraordinary oscillation which began at 12.00 was caused by the poor management and control of a high-capacity photovoltaic power plant in the province Badajoz." She was referring to the first oscillation, recorded just before the blackout.

She said that the plant "behaved inappropriately and as a consequence made the system more vulnerable," without disclosing its name, owner, or exact location.

The same plant had experienced a similar failure the year before, and those in charge of that plant said that they were conducting an experiment to see how best to manage this plant.

Corredor, as it has done in the past, blamed some coal, nuclear and gas plants for not maintaining an adequate voltage.

The Spanish utilities blamed grid operator's incompetence for the blackout. (Reporting and editing by Tomaszjanowski)

(source: Reuters)