Solar Street Light
Solar street lighting system uses the photovoltaic technology to convert the sunlight into DC electricity through solar cells. The generated electricity can either be used directly during the day or may be stored in the batteries for use during night hours.
Parts of a solar street lighting system
- Solar photovoltaic module
- Battery box
- Lamp with charge controller
- Lamp post
- 74 Watt Solar PV Module
- 12 V, 75 Ah Tubular battery with battery box
- Charge Controller cum inverter (20-35 kHz)
- 11 Watt CFL Lamp with fixtures
- 4 metre mild steel lamp post above ground level with weather proof paint and mounting hardware.
How does Solar Street Light Work
As stated before, the solar panel charges the battery during daylight hours. When the sun sets, the solar panel acts as a photocell, communicating with the onboard electronic controls, and turns the light fixture on. The control electronics keeps the light on from dusk to dawn, from dusk for a set number of hours, or many other operating profiles available with commercial solar street light systems.
The next day at dawn, the solar charge controls reverse this process and charges the battery. From dawn until dusk, the batteries will charge at different levels depending on the sun strength and current weather conditions. This is why it is important to ensure there is no shading on the panel as this can cause the panels to not charge as intended, causing the batteries to not receive the charge that is required to operate again the next night.
Advantages
- No requirement of electricity
- Easy to install
- Simple to operate and low maintenance cost
- Eco friendly
- Since automatic street light systems feature no moving parts, they require less maintenance than conventional street lights.
- Cost of operating automatic solar street lights is far less when compared to the conventional street lights.
- The automatic street light system is eco-friendly hence helps in reducing the carbon footprint.
- Smart solar street lights can be put up in remote areas even in places that are not accessible to the grid.
Solar Street Light Projects
Why
Renewable Energy Source?
Save
77kg Coal
combustion
136kg GHG emissions
into the atmosphere
478ltr Water
usage