[Tilted Irish Kilt]

meatloaf:" The key is that was a substation and there was no cascading failure. There has to be thousands of those in this country."

Correct - there was no cascading failure .
But as I recall , it was close to it but PG&E continued to support and hold up the grid at that time .
I believe that this sub-station also powers industries in the Silicon Valley . Since the attack occurred at 1 AM, and involved approximately 120 rounds fired at the sub-station,
involved entering 2 manholes to cut security fiber optic cables
leads me to believe that this was no accident , nor a drunken prank .

[thackney]

there was no cascading failure . But as I recall , it was close to it but PG&E

I would like to see a discussion stating that. Substations trip off line sometimes. It is not an event that would trigger a cascading tripping of the entire system.

[meatloaf]

The other thing to consider is there is no national grid. It’s made up of regional grids that can survive on their own although electrical use might have to be restricted.

The PG&E attack is interesting from a couple of angles. Trying to repeat that in the future might be interesting for the participants. If that was a practice run they exposed themselves.