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Power was out today throughout Spain and Portugal as well as in Andorra and parts of southern France, in one of the most serious such incidents so far, on a European scale. The European Commission’s Executive Vice President Teresa Ribera and other officials from the EU and the affected countries said there are no indications of sabotage or cyberattack.
REN, the transmission system operator (TSO) of Portugal, said extreme temperature variations inside Spain led to anomalous oscillations in 400 kV lines.
Grid operators and electricity producers are gradually restoring the power supply after a massive outage struck the Iberian peninsula today. Prime Minister of Spain Pedro Sánchez convened the National Security Council. It is one of the most serious blackouts in Europe in many years. The outage spread throughout Spain and Portugal.
Power was out in Andorra and, briefly, in parts of southern France. Transportation and telecommunications were heavily affected.
Spanish TSO Red Eléctrica de España called it a “collapse of the Iberian electricity network.” The company said it would take six to ten hours to restore it. Notably, the production system is relying almost completely on photovoltaics and wind farms at the moment, so just a few hours of solar power production remain.
Outage could have originated from power line in France damaged by fire
The outage paralyzed major cities including Madrid, Barcelona and Lisbon and caused disturbances in the European grid. The European Commission’s Executive Vice President for Clean, Just and Competitive Transition and Commissioner for Competitiveness Teresa Ribera said there were no indications that “any kind of sabotage or cyberattack” was behind the grid collapse.
According to the Government of Portugal, the incident started from outside the country
According to the Government of Portugal, the incident started from outside the country and, apparently, in Spain.
Portuguese transmission system operator REN first suggested that damage to a high-voltage line in southwestern France from a fire was a possible cause. The company later blamed extreme temperature variations inside Spain for anomalous oscillations in 400 kV lines.
Shares of solar, wind power production in Spain breaking records
In the spring and autumn, when there is little to no demand for heating or cooling, electricity grids in most of Europe are sometimes strained from surges in high solar and wind power production, amid a lack of energy storage and flexibility capabilities that would balance the surplus.
On April 16, the Spanish electricity system achieved total coverage for the first time with renewable energy sources. At one point during the day, wind and solar met 100.6% of demand. Then on April 21, solar power generation was equivalent to a record 78.6% of domestic demand for a moment.
Reid: The massive outage occurred while prices are negative in electricity markets across Europe
“Spanish grid operator Red Eléctrica has so far blamed a power ‘oscillation’ on the power outage. We still don’t know the cause but it looks like problems at the Spanish-French power interconnector led to the Spanish grid operator islanding their power system and I would say at this point they lost control,” said Gerard Reid, investor and strategic advisor in energy, finance and geopolitics.
It has also proven difficult to restore power with multiple black start (restart) procedures taking place, but the issue is that at the time of the blackout there were no conventional power units in operation, he pointed out. Reid added it makes the restart complicated and stressed that Europe requires enhanced grid-scale battery storage solutions, including for black start capabilities.
He also highlighted the fact that the massive outage occurred while prices are negative in electricity markets across Europe.
Of note, a grid incident last summer left much of the Western Balkans and parts of Croatia out of power for several hours.
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