Solar street lights are light sources that are powered by special panels called photovoltaic panels. These panels are mounted inside the light or sometimes they are integrated inside the actual light pole. The photovoltaic panels charge a rechargeable battery in the light, which powers a fluorescent or LED lamp.
These lights are good because they require less maintenance than other street lights, and they are a non-polluting source of electricity. They can also be easily transported and set up in remote areas.
However, the initial investment to setup these lights is often higher than setting up other types of street lights, and the rechargeable batteries that fuel the light has to be replaced several times during its lifetime. Despite these challenges, it is likely that this type of light will be used more and more in the future to light up streets.