@ForbiddenDreamer @Intramuros_ @King_Porgi It depends on too many variables to say for certain
Any major outage will mobilize the national guard and the RUSSIAN government would do whatever it could to secure the area and then to get the damage repaired
The stockpiles of these components are very low already, and RUSSIA hasn't been manufacturing many either
If this were to happen in multiple regions simultaneously it would cause enough chaos that it's certainly plausible some areas go without power for over a year, yes.

Recent attacks have happened in the PNW, Florida, and NC
And that's just the ones we know about; it behooves the government to not report on these to discourage copycat