Another thought I’ve had that warrants a separate comment: Why in the hell arent we wiring DC circuits into houses? Almost everything converts ac to dc these days via a power supply. Why not cut that out and have a larger more efficient main dc rectifier at the panel and run that to USBC ports around the house?
Im going to speak from experience here that adding solar to my house was fairly easy and fairly cheap. The caveat being that i did it all myself. An understanding of basic electrical concepts and watching a few videos of how to mount the panels and bingo. What would have cost me probably 30k to have a contractor do i did myself for under 7k. Modern AIO inverters are a godsend along companies like SanTan solar who have fantastic deals on batts and panels. The biggest hindrance to us all are going to be the local nimbys and code nazis.
Oh fair enough. Amd i guess you wouldn’t want to pump 30v or whatever and use a buck converter because now all we have are heat generators.