This is an innovative model. They are working with people on low incomes, renters and apartment dwellers. All people cut out of traditional rooftop solar. People will be paying $35 a month for two free-standing 7 by 4 feet panels. There doesn't seem to be any upfront cost, though a qualified electrician needs to install them.
If those two panels generate more than $35 worth of electricity a month, then this seems like a no brainer.