My sister and her husband, in Iowa, rigged up a solar panel to charge their Leaf. More power to them. :0)
I have a small solar system on my greenhouse.
Two medium cells with a battery run the cooling fan and a couple of LED lights. The 12v fan is on a thermostat for an attic fan and only runs when it is fairly hot(95+) inside the greenhouse.
Been running this set up for 4 years now and has never ran out of juice.
Solar can work great if your power needs are small enough.