https://x.com/RedElectricaREE/status/1916818043235164267
We are beginning to recover power in the north and south of the peninsula, which is key to gradually addressing the electricity supply. This process involves the gradual energization of the transmission grid as the generating units are connected.
I see load dropping to zero on that graph, or rather, load data disappears an hour ago.
If the grid frequency goes too far out of range then power stations trip automatically, it's not an explicit decision anyone takes and it doesn't balance load, quite the opposite. A station tripping makes the problem worse as the frequency drops even further as the load gets shared between the remaining stations, which is why grids experience cascading failure. The disconnection into islands is a defense mechanism designed to stop equipment being too badly damaged and to isolate the outage.
For that incident, an expert panel was set up in July, the interim report was published in November, and the final report in Feburary 2025: so it'll take a few months.