Solar street lights are raised light sources which are powered by solar panels generally mounted on the lighting structure or integrated into the pole itself. The solar panels charge a rechargeable battery, which powers a fluorescent or LED lamp during the night. Most solar lights turn on and turn off automatically by sensing outdoor light using solar panel voltage. Solar streetlights are designed to work throughout the night. Many can stay lit for more than one night if. Solar street lights consist of four main parts: Solar panelThe solar panel is one of the most important parts of a solar street light, as the solar panel can convert solar energy into electricity that the. • Solar street lights are independent of the. Hence, the operation costs are minimized.• Solar street lights require much less maintenance compared to conventional street lights.• Since external wires are eliminated, risk of accidents are minimized. • • • • • Each street light can have its own photo voltaic panel, independent of other street lights. Alternately, a number of panels can be installed as a central power source on a separate location and supply power to a number of street lights. All-in-one type solar. • Initial investment is higher compared to conventional street lights.• Risk of theft is higher as equipment costs are comparatively higher. • Snow or dust, combined with moisture can accumulate on horizontal PV-panels and reduce or even stop energy.
