In the US, it's due to the cost of the grid, the part of the utility bill that PUCs allow utilities to charge a fixed rate of profit. So if utilities take 20% on that grid "maintenance" project, the utility drives up the price as high as possible.
This is why distributed solar is actually cheaper than utility scale solar all-in: you need less of that very very expensive grid, even if you pay 3x on the initial install costs.
This is why distributed solar is actually cheaper than utility scale solar all-in: you need less of that very very expensive grid, even if you pay 3x on the initial install costs.