Your article says that production is 7 to 9 cents and that distribution is 10 to 20 cents.

The problem is that rooftop solar is not lowering those distribution costs in any substantial fashion.

That underlies my thought on roof top solar. Big picture we can build out twice as much utility scale solar for the same expenditure of resources. If homeowners are going to spend $$ on something replacing gas furnaces with heat pumps would be better.

Resynchronizing all those installations to the grid without a DC step in between (powerwall basically) will cause a lot of blown fuses in the best case.

Unless you mean that powerwalls are banned?