The majority of the cost of electricity in most jurisdictions is distribution, not generation. Grid-solar still requires distribution, so it is always going t

The majority of the cost of electricity in most jurisdictions is distribution, not generation. Grid-solar still requires distribution, so it is always going to have significant cost even if the cost of generation is insignificant. If it can remove the need for a grid-tie, then rooftop solar can be significantly cheaper and more efficient. Can be, but isn't yet, because enough overcapacity and storage to eliminate the need for a grid tie is still too expensive.