While the electric grid is fragile in places currently (no pun intended) there is no reason to believe it will remain so.
All military electrical systems are hardened already and they would provide enough power to get things back up and running.
I’ll take the military dictatorship over extinction…unless it’s controlled by commie fascist tranny kooks. OK, never mind, extinction, here we come.
I know that dod is in no way hardened.