The answer is do both, industrial utility PV has so far been lower cost, but individual PV is higher resilience - especially in the age of extreme weather events.

I have a grid detachable PV system with battery. It's been invaluable for grid blackouts in my area to have the capability even as I have paid (at least for the first couple years) a higher price per kwh for it. Over more years, it's really nice to have price insulation against utility price increase.