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Spain's grid denies that solar is to blame as a blackout blame game explodes

Spain's grid operator denied Wednesday that solar power was responsible for the country's biggest blackout. Prime Minister Pedro Sanchez, however, came under increasing pressure from his critics to explain what went awry.

After a power failure that caused trains to stop, airports to close, and people trapped in lifts, Sanchez’s opponents blamed low investments in a system which increasingly relies upon intermittent solar and wind energy.

Sanchez announced an investigation by the government and stated that he wanted answers from private companies who feed electricity into the grid. He said that he had not ruled out the possibility of a cyber-attack, although REE, a grid operator owned in part by the state has dismissed this.

The political fallout of deadly floods that struck the East and South of Spain, killing more than 220 people, is still a problem for Spain's authorities.

REE (headed by former Socialist Minister Beatriz Corredor) has pinpointed the cause of the outage as two separate incidents in substations located in southwest Spain. However, it says that the exact location of these incidents is still unknown and it is still too early to determine what caused them.

Corredor, in an interview with Cadena SER radio on Wednesday, said that it was incorrect to blame the outage of Spain's high renewable energy share.

She said that "these technologies are already stable, and they have systems which allow them to function as a conventional generator system without any safety concerns," adding that she did not consider resigning.

According to REE data, just before the system collapsed, solar energy was responsible for 53%, wind power for 11%, and nuclear and natural gas for 15%.

Energy Minister Sara Aagesen stated that the government gave power companies until late Wednesday to submit data on "every millisecond of those five seconds", when on Monday the system lost 15GW, which is equivalent to 60% demand. This led to a disconnect from the rest Europe.

MALFUNCTIONING REE

Political opponents claimed that Sanchez took too long to explain the power blackout and that he was trying to cover up REE's failures.

In an interview with RTVE, Miguel Tellado said that since REE had ruled out a cyber-attack, the only thing we could point to is the dysfunction of REE. The company has state funding and its leaders are therefore appointed by the government.

Sanchez's announcement of a government investigation was rejected by Sanchez, who called for an independent investigation conducted by the Spanish parliament.

The Spanish government has said that it asked for the "maximum transparency and collaboration" from private energy companies to identify the cause of this outage.

Ignacio Sanchez Galan said that REE should explain the cause of the blackout. The company's operations are not to blame, he added.

Antonio Turiel, a Spanish National Research Council energy expert, told Onda Vasca, a radio station owned by the Spanish government, on Tuesday, that the fundamental issue was grid instability.

He said that "a lot of renewable energy was integrated without the responsive stabilisation system that should have existed", adding that vulnerabilities were caused by "the unplanned, haphazard integration" of a variety of renewable systems.

The government is expecting private and public investments of 52 billion euro through 2030 for upgrading the power grid to handle the surge in demand due to data centres and electric cars. Aelec, a utility lobby, said this was not enough.

Jordi Sévilla, chair of REE until 2020, wrote an opinion piece for Cinco Dias that the government is moving too quickly to decommission the nuclear power plants, which can provide stable production to offset the peaks in intermittent renewable energy.

He said that the government's plan to invest in the grid was "planned from a desk, with too many renewable messianisms and a deaf eye towards the technical issues associated with such a significant change in Spain's mix of energy." Reporting by David Latona in Madrid, Pietro Lombardi in Barcelona and Aislinn Laing; Writing by Charlie Devereux and Editing by Peter Graff & Barbara lewis

(source: Reuters)