There are a number of ways it can be made financially viable and beneficial to use Solar PV technology.
To make maximum return on them, it can be worth buying Solar PV paneling outright, therefore increasing property value. The initial outlay after roughly eight years will have been cancelled out. However, leasing and loaning are also an option. In this way, property value is still increased, and there is a flexible payback period. This means the initial heavy outlay is not required. It's also possible to get PV for free, thus getting free electricity and saving on bills without the initial payment cost of owning outright.