Though the rooftop solar isn’t optimal from an efficacy standpoint, it has other selling points. You have residential solar and a battery? Congratulations, you don’t have to worry so much about power outages. This is particularly a selling point for rural living, where outages happen more often and last longer.

The abstract “it’s greener” is a less potent sales pitch than “your fridge, heating, and a/c can still work even if the grid is gone”.