The official report on the blackout in Spain and Portugal was just released

bsky.app

12 points·Arnt··8 comments

Original source (in Spanish): https://www.miteco.gob.es/es/prensa/ultimas-noticias/2025/ju...

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Related discussion:

https://news.ycombinator.com/item?id=44301186

Report:

https://d1n1o4zeyfu21r.cloudfront.net/WEB_Incident_%2028A_Sp...

https://archive.today/2kJ4i

https://web.archive.org/web/20250619151545/https://d1n1o4zey...

https://www.miteco.gob.es/es/prensa/ultimas-noticias/2025/ju...

The is the Spanish government press release, it should be changed to the primary source. @dang

Thanks for this. HN is an English-language site, so we always want the main link to be to an English-language source, even if it's a second-hand report. I've added the primary source to the top-text.

All that said, as someone else pointed out, there's already been a discussion about this on HN.

Is this report trustworthy? I mean, it's strange that all of a sudden conventional power plants were the sole culprit.

Turning off all of the solar at the same time must've been an act of desperation.

The solar wasn't turned off intentionally. The solar turned off automatically due to the over-voltage on the grid.

There is something called "high voltage ride through," where solar inverters that support it will dynamically adjust to above nominal voltage. If support and coordination are lacking, failure mode is rapid shutdown vs remaining connected.

https://www.iso-ne.com/static-assets/documents/committees/co...

https://www.sciencedirect.com/science/article/abs/pii/S13640...

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