According to an investigation by the Spanish government, Blackout, serving Spain and Portugal to Spain and Portugal in April, was the result of several small conversations of problems. The report concludes that several stages have become worse to address a small instability, eventually a pioneer for a self-righteous cascade where high voltage inspired power plants to release the grid, leading to further increase in voltage. Seriously, the report suggests that the Spanish grid operator had unusually low number of plants on the call to stabilize cases, and some people had a poor response.

The entire report will be available later today; However, government A summary released Beyond its release. The document involves a time -line of incidents that trigger blackouts, as well as why grid management failed to keep it under investigation. It also notes that a parallel investigation examined for signs of a cyber attack and no one was found.

Oblope and a waterfall

The document notes that for several days before the blackout, the Iburian grid was experiencing ups and downs in the voltage – a mismatch product between supply and demand – which was managed without the event. These continued till noon after noon till noon till noon on the morning of 28 April, when an unusual frequency oscillation occurred. This oscillation has been detected a single feature on the grid, but the report does not recognize it or even indicate its type, simply refers to it as “Instalsion”.

The grid operators replied in such a way that the oscillations were suppressed but increased the voltage on the grid. About 15 minutes later, a weak version of this oscillation re -occurred, by oscillations at a different frequency immediately after, it is usually seen on the European grid with properties. This inspired the grid operators to take corrective steps again, increasing the voltage on the grid.

The Iberian grid is capable of handling this kind of thing. But the grid operator set 10 power plants to handle the voltage regulation only on 28th, which is the lowest total of the report notes that were committed to all of 2025 till that point. The report found that many of those plants failed to respond properly to grid operators, and some also replied in such a way that the surgeing voltage contributed.