Even if all this were true, the problem isn't renewables per se, but rather poor grid management. I'm flabbergasted to learn their grid management is so poor. A

Even if all this were true, the problem isn't renewables per se, but rather poor grid management. I'm flabbergasted to learn their grid management is so poor. As I said, here in the States, variable power sources must be backed by confirmed power sources that are ready to ramp-up. Here in North America, we use Automated Generation Control (AGC) to control the unit to maintain the phase angle at zero. If the solar output dropped, then the confirmed units would have automatically ramped-up and maintained the proper phase angle. After minimal research, I found that Spain, and most of Europe, also uses AGC. The system should have "just worked" and prevented this sort of problem. It may be several days before they identify a root cause.