I tink the concern , and you seem to agree in part with your last two posts, is not the rebuilding of the grid per se, but the rebuilding of individual components of society, component circuit boards
making a generator put out power, that can be done after a while, but you need something to put power too
that means you need to replace components on boards
you need people to troubleshoot those boards
most of them are dead by then
If you want to look at the greater issue -
Power generation, transmission, and distribution assets require hardening. Hardening can take many forms - and is usually referred to as “resiliency” vice “hardening”.
Resiliency measures may include shielding, logistical measures, spares/training measures, alternate communications measures.
There are lots of things to be done. Civil infrastructure is critical infrastructure - particularly power, water, and water treatment.
But as of this moment, we do not have a complete understanding of infrastructure damage to be expected (could be a little, could be a lot). We don’t know how vehicles will be impacted - especially late model vehicles.
You may well be right - that one key capability to getting things “up and running” will be the ability to replace components on a board, in some instances.