[jamescrowley]

Nothing to do with the blackout in Spain - https://www.reuters.com/business/energy/what-caused-iberian-... - voltage surge and various thermal power generators failing to provide the voltage correction services they were being paid for

But yes, grid following alone does not provided the required stability - synthetic inertia etc needed

[namibj]

True DC grids avoid this stability issue by not having a phase and allowing power flow to pretty much just self-balance through voltage gradients and clipping of connections/devices to whatever current they can handle.

With enough voltage range that wouldn't even need the tricky loops of voltage regulation common in incandescent-targeted legacy AC grids.