Red Electrica report on the “Blackout in Spanish Peninsula Electrical System on 28th of April 2025”

On Wednesday 18th June 2025

• we noted about ‘The Non-Confidential Report (182 pages) into the Iberian blackout’ from the Government –
• which followed the ‘News Release on the blackout on the Iberian Peninsula (on 28th April 2025) suggests overvoltage was the cause’.

Also released on the day, but belatedly noting here, was a 18-page report by REE (Red Eléctrica, the sole transmission system operator (TSO) for the Spanish electricity system) published on the “Blackout in Spanish Peninsula Electrical System on 28th of April 2025” .

I could not originally find it on the REE website, but another of the team found it on the Operations Page here:

I thank Miloš Ryba for noting it here on LinkedIn, as that’s where I initially saw it:

This report is in English, and some text has been highlighted by someone before it’s been uploaded to that location.

Will be of interest to some of our readers.