Which unfortunately meant they were unable to support the "reboot" of the network. That was started in the evening to avoid working hours (we were lucky and hat our electricity back at 18:30, while some people had to wait quite a bit longer). The reboot used mostly hydro, gas, and as much electricity as possible from France and Marocco. (well summed up in https://en.wikipedia.org/wiki/2025_Iberian_Peninsula_blackou...)
I wonder whether there could be a safe mode during load shedding that would not require a complete reactor shutdown. If that were the case, nuclear could have a stabilizing effect same as gas or hydro.
I am quite eager to learn about what really went wrong. We enjoy really cheap consumer prices for electricity (we use it to heat and cool, like in the US), thanks to solar and wind. I hope investing in batteries and network reliability will be enough to mitigate the problems.