Home defense is pretty much illegal here, firearms are effectivly prohibited, and although crossbows and kitchen knives are allowed for now! heaven help anyone who uses such against an intruder.

I would hope to keep a very low profile, and not advertise my source of power, PV is at least silent unlike a generator.
I am equiped with blackout curtains, and home made storm shutters. In the long term though I would simply wait for either the return of normality, or until I judjed it safe to travel to friends or relatives in the countryside.