The simplest and probably least expensive way to do it is to look for one of the better yard pathway solar lighting systems these have sensors to come on at night and turn off during the day. And charge during the day. If all you want is light, these seem like the best way to do.


But if you want more power a 45 watt solar panel & charge controller from Harbor Freight ($180.00 on sale about every other month, normally $249.00) and a battery. Then look for a 12-volt LED light that comes on at night.