Residential solar would work great if financing was generous but stipulated the cost had to be reasonably close to grid procurement cost.
Well, and we need to scale up sodium ion cells for home storage.
Home solar with storage adds resilience to communities, and should lessen the amount of transmission infrastructure needed for EVs.
And I fail to see how that should inflate the cost 2-5x over grid solar. Ok, 2x I can somewhat accept, I guess. But it's not like each house in existence is a complete random topological shape never seen before.
I feel there is some ... impedence ... in the home solar business that is holding it back. I think grid solar and home solar are two separate fronts attacking the same problem, but home solar makes home owners much more aware of efficiency as well. IMO there is policy failures in home solar currently.