Options for solar garden lights: If you are looking for a cheap and eco-friendly lighting alternative, then solar garden lights are just what you need to add that something special to your garden. NiCad batteries fuel these mini light sources, which are charged by the sun?s rays, all day. The batteries then power the lights all night. A change in light conditions will turn the lights on or off automatically. Possibly the biggest benefit of solar garden lights is that each light is self-contained, so you do not need to trench your yard or garden to install any wiring. Solar lights are available in a range of colors, shapes, sizes and either mounted or flouting form, depending on your budget and taste. Solar lights are also perfect for use in and around water including water features such as ponds.