I've been thinking of solar when we head out for boon-docking camping trips. But I am not a full-timer, just a weekender so the price of it can't be justified for me. Since I am in Kansas it seems more attractive as a $ per watt setup to go with wind power. But even then, I still have to set it up for just the weekend. If I was going out for longer treks, then it may be a better idea. But right now I'll just run the genny when I boondock or use independent solar lights rather than a whole solar setup. Solar garage lights are only around $30 and they will light up most of the bus for several hours each night.
Harbor freight is great source of cheap stuff. I just put in an order for 20 of the LED small work-lights.
These little things are great and work as a backup to my solar or shore-power lighting. They also have a magnet and a fold-away hook so you can find somewhere to put them. I will give a handful away but the rest are getting stuffed away into all sorts of spaces. Either on the bus or in the cars. These things cam in real handy when I was working next to the bus to get the propane bottle changed on our lantern last week. The magnet allowed me to just slap the light on the bus. They only take 3 aaa batteries but last quite a while for the amount of light they put out.