I think that is dictated by the transformer in your neighborhood/area. I have a 50kVa transformer practically in my driveway, which feeds 8 homes in my cul-de-sac. My solar guy told me once he does the install on my home (11kw), and includong the 4 other homes that already have solar, (unknown on their size) the city won't allow any of my neighbors to get solar because it would be too much for the transformer. Whoever decides on solar after me will have to petition SCE to put in a larger transformer.
Idk how true that is, because what are the odds of all 5 of our homes backfeeding 100% of our rated PV energy, without using any of it?
