ENTSO-E report says Iberian blackout was caused by multiple factors
The Facts
- ENTSO-E's final report says the April 28, 2025 Iberian blackout was caused by multiple interacting factors rather than a single cause.
- The report identifies a voltage surge or overvoltage event as the immediate trigger of the outage.
- The blackout affected Spain and Portugal, and a small area of southern France was also impacted.
- ENTSO-E described the blackout as the most severe and unprecedented incident in the European electricity system in more than 20 years.
- The report says the outage began in Spain and that Portugal was affected because of the two countries' close interconnection.
- ENTSO-E said the report was intended to identify root causes and recommend measures to reinforce Europe's power grids and prevent similar incidents.
- Several sources say the report does not assign blame or legal responsibility.
Context
What did ENTSO-E say caused the blackout?
ENTSO-E said the blackout resulted from a combination of technical factors that led to a voltage surge and cascading loss of power generation, rather than a single cause U.S. News & World R… SAPO SAPO.
Did the report assign blame to any country or company?
No. Multiple sources say the report was a technical analysis and was not meant to assign blame or legal responsibility, with any liability questions left to national authorities U.S. News & World R… SAPO Notícias ao Minuto.
What did the report recommend?
The report recommended strengthening grid resilience through better monitoring, coordination, operational practices, and regulatory updates to support the evolving power system SAPO SAPO Notícias ao Minuto.
The receipts — all 80 sources
Wire services (13)
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