More into the actual reasons:

Pedro Sánchez is determined that lessons will be learned and such a crisis will not happen again.

:But energy expert Carlos Cagigal told Spanish TV there was a risk that it might, because Spain’s infrastructure was simply not in a position to cope with all the renewable energy being produced.

The power grid operator warned earlier this year of the risks of excessive renewable energy while closing nuclear plants.

But a clip of its president Beatriz Corredor has gone viral from 2021, in which she insisted that Spain had “one of the safest and most advanced” electrical systems in the world and there was no reason to worry.