Land is expensive. I am actually surprised why the companies don't lease home solar panel kits, e.g. you sign up and they install at minimal cost, and you pay for the electricity generated by the solar panels, but at a reduced rate compared to the grid. The ownership of the panels stay with the company leases them.
Those structures do exist, but they're not normally popular. Look for "power purchase agreement" solar plans. Normally those involve some pretty long contracts that are hard to get out of, contracts transfer to the new owner of the house so it can make your house less desirable, often require you to buy all the power they generate even if you don't need it all, need to call their contractors to remove the panels whenever you need roofing work done, you've got a lot of equipment in your house that isn't yours.
I wouldn't do it. I don't need yet another interested party when trying to sell my house eventually, and I don't want to scare off would-be buyers with potentially complicated contract terms.
