As the whole world races towards development, our finite conventional energy continues to deplete resulting in ever raising Supply Vs Demand gap, high Energy bills and environmental hazards. Thus the best method is to use non-conventional energy sources especially Solar available in abundance to save Electricity and safeguard environment. A Solar Lamp also known as Solar Light or solar lantern, is a lighting system composed of a LED lamp, solar panels, battery, charge controller and there may also be an inverter. The lamp operates on electricity from batteries, charged through the use of solar photovoltaic panel.
The 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 lamps can use. There are two types of solar panels commonly used in solar street lights: mono-crystalline and polycrystalline. The conversion rate of mono-crystalline solar panels is much higher than their poly-crystalline counterparts. Solar panels also vary in wattage systems.
Batteries will store the electricity generated by the solar panel during the day and provide energy to the fixture during the night. The life cycle of the battery is very important to the lifetime of the light and the capacity of the battery will affect the backup days of the lights. There are two types of batteries commonly used in solar-powered street lights- gel cell deep cycle batteries as well as lead acid batteries. Lithium-ion batteries are also popular these days as they are compact in size and not prone to theft due to their lack of use in other situations unlike lead acid batteries.
Solar street lights are independent of the utility grid . Hence, the operation costs are minimized.
Solar street lights require much less maintenance compared to conventional street lights.
Since external wires are eliminated, risks of accidents are minimized.
Electricity produced from solar panels is non –pollutive.
Separate parts of a solar panel system can easily be transported.
Energy costs can be saved.
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