I guess I meant from a technical efficiency perspective, rather than the social infrastructure around it. It’s unclear to me (and frankly seems unlikely?) that

I guess I meant from a technical efficiency perspective, rather than the social infrastructure around it. It’s unclear to me (and frankly seems unlikely?) that few more percentage points will fix the very real structural issues you raised! At the same time, even if we do solve those issues, and we get solar panels on the roof of every home, there are still significant challenges to overcome as it’s unlikely the average home can become fully energy independent (especially if there is electrified winter heating), and anyways, the energy demand from single-family residential housing is only one slice of the overall energy pie. In any case, it would certainly help if we did that!