Alex Trelinski
SPAIN and Portugal’s April 28 electricity blackout was caused by excessive voltage according a report published by the European network of electricity transmission system operators(ENTSO-E).
Their analysis focused on the power systems’ condition on the day of the outage and the sequence of events.
It did not look into what actually triggered the voltage spike.
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A final report in early 2026 will investigate the causes and steps taken to control voltage in the electrical grid.
Damian Cortinas, chair of ENTSO-E’s board, said nothing in its findings had indicated a cyber-attack was involved.
He also said neither Spain’s increasing reliance on renewable energy nor the country’s limited power interconnections with other countries had played a role.
The report said that the reasons for some initial power generation losses were still unknown and that some power plant operators in Spain said they lacked this data or did not supply it.
Companies who did not cooperate said they were legally obliged to maintain confidentiality.
“Collecting complete, high-quality data proved very challenging for this investigation,” ENTSO-E commented.
Spain’s grid operator, Red Electrica, reached a similar conclusion in June- pinning the blackout on some power plants’ failure to help maintain appropriate voltage.
Utility firms on the other hand pointed the finger at Red and its poor planning.
The ENTSO-E experts will also ‘consider the incident in a broader context’ for their 2026 study- examining the Iberian electricity system in the days before the blackout,
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no, not so. the real reason was the Chinese communist party shut down the power as retaliation against Spain supporting Isreal. the CCP could shut down the power of the western country easily as all the infrastructures and 4G,5G were made in China, which means the CCP has back door and enable it to control the western power remotely. that´s the horror. If we don´t destroy the CCP, the CCP will strangle us with power any time it feels like. just that simple.