official report on 2024 power outage in Spain and Portugal

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Robbie Morrison

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Apr 3, 2026, 11:43:25 AM (2 days ago) Apr 3

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Hello all

The official report on the power outage in Spain and Portugal on 28 April 2025 was released two weeks ago.

ENTSO-E (20 March 2026). ENTSO-E publishes expert panel final report on 28 April 2025 blackout in Spain and Portugal. ENTSO-E. Brussels, Belgium.
ENTSO-E (20 March 2026). 28 April 2025 blackout. ENTSO-E. Brussels, Belgium.

"The investigation concludes that the blackout resulted from a combination of many interacting factors, including oscillations, gaps in voltage and reactive power control, differences in voltage regulation practices, rapid output reductions and generator disconnections in Spain, and uneven stabilisation capabilities. These factors led to fast increases of voltage and cascading generation disconnections in Spain, resulting in the blackout in continental Spain and Portugal."

Expert Panel (20 March 2026). Grid incident in Spain and Portugal on 28 December 2025 — ISC Investigation Expert Panel — Final report. Brussels, Belgium: Expert Panel on the Grid Incident on 28 April 2025.

best, Robbie

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Robbie Morrison
Address: Schillerstrasse 85, 10627 Berlin, Germany
Phone: +49.30.612-87617

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