Solar Street Lights in Pakistan
In Pakistan, street lights commonly prevail to provide a sense of security for homes, towns, and markets. However, a couple of hours of load shedding during the night and continuously rising electricity prices make it quite challenging for homeowners, town residents, and market owners to keep the lights on for better security purposes during the night. In such circumstances, renewable energy, particularly solar energy, emerges as the best problem solver. With solar lights, energy is saved during the day and automatically activated as the sun sets.
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What are Solar Street Lights?
Solar street lights in Pakistan are just like normal outdoor lighting systems, but they use solar panels to harness sunlight and convert it into electrical energy. This energy is stored in batteries during the day. In most cases, the street light contains built-in batteries and a sensor system. When the sunlight dims, they automatically turn on and are powered by this stored energy during the night.
How Solar Street Lights work?
Solar LED street lights are commonly installed on poles, with solar panels positioned at the top. These panels absorb sunlight and turn solar energy into electricity. The built-in charge controller and batteries then transform the DC electricity into AC light and batteries store the electricity for illuminating the lights at night. And when the sunset and it gets dark, the solar LED street lights automatically recognize the evening time and turn on.
Here Is a Table Summarizing the Working Principle of Solar Street Lights
| Component | Function |
|---|---|
| Solar panels | Convert sunlight into direct current (DC) electricity |
| Batteries | Store DC electricity |
| Charge controller | Regulate the flow of electricity between the PV panels, batteries, and LED lights |
| Photocell sensor | Detects decreasing light levels and triggers the activation of the LED lights |
| LED lights | Provide illumination |
Advantages of installing Solar Street Lights
Cost Savings
Solar lights are powered by the sun, eliminating the need for electricity from the grid. This can result in significant cost savings on energy bills.
Energy Independence
Solar street lights operate independently of the grid, making them ideal for remote or off-grid locations where traditional electricity sources may be unavailable or expensive to install.
Low Operating Costs
Once installed, solar lights have low maintenance and operating costs. They require minimal upkeep compared to conventional street lights, which may need frequent bulb replacements and maintenance.
Automatic Operation
Solar lights are equipped with sensors that detect ambient light levels. They automatically turn on at dark and turn off at dawn, ensuring efficient energy use and providing consistent lighting throughout the night.
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