Solar LED Street Light Used in Road Lighting in China

LED Street Light Used in Road Lighting in China

Street lights in Shenzhen China.

At the forefront of the green energy revolution are solar street lights.

The three main sources of green energy are the sun, water, and wind. Of the three, solar energy has attracted the most interest due to its effectiveness in lowering energy use and environmental harm.

Government efforts and the widespread use of solar illumination systems like solar street lights are what are causing the worldwide trend. How come solar street lights? The solution is clear. To reduce greenhouse gas emissions, the whole globe is focusing on sustainable power sources. The demand for and expansion of the solar street light market are driven by the unrelenting search for green energy. Here’s the evidence: According to international analysts, the market for solar street lighting would grow at a post-Covid CAGR of 14.7% and reach $14 billion by 2027.

Why are solar-powered street lights so common?

Solar street lighting are widespread in India. Highways crisscrossing the whole nation are scattered with thousands of them. These solar street lights spring to life when day transitions to night, illuminating the roadways with green energy.

For many excellent reasons, standalone solar street lighting are quickly gaining popularity. As follows:

  • Cost-effective
  • Low-maintenance
  • Sustainable power
    even at faraway locations,
  • Usable
  • Wire and cable-free

How do they function?

Solar street lights use batteries or photovoltaic cells to store solar energy rather than the on-grid power source. Due of this feature, solar street lights are a practical choice for distant areas without an electrical grid supply to illuminate highways and roads. By transforming the stored energy into electricity as needed, these devices may also utilise it. Your solar street lights must remain in direct sunlight for at least eight hours for them to absorb the sun’s energy in order to work properly. They are ready to go for the remainder of the evening once charged.

Due to the fact that solar-powered solutions are quickly gaining popularity, investing in solar street lighting is unquestionably a sensible choice. The market is being driven by how well-liked these street lights are, and vice versa. Numerous solutions are available on the market for solar lighting, which might be intimidating for novice investors. If you don’t have enough knowledge, you could purchase inferior solar street lighting made from inferior components.

However, our article is jam-packed with all the details you should take into account before buying solar street lights. Continue reading.

11 Things to Think About Before Purchasing Solar Street Lights

1. The source of light

When you look for solar street light vendors in Chennai for solar-powered lighting sources, you have a number of choices, including:

  • energy-efficient lights
  • LED lights
  • Ionized lamps
  • Sodium lights

The LED light is the greatest option among them since it most closely resembles the spectrum of the sun. Modern smart solar-powered LED lights have better brightness outputs that use less energy. Additionally, LED lighting makes the incorporation of solar electricity quick and uncomplicated. They could thus be the superior option.

2. The battery’s kind

Batteries, which come in two varieties, power all solar lights.

  • A lithium battery
  • Lithium-ion batteries
  • The lithium battery is superior than the other because it has:
  • greater longevity
  • greater temperature resistance (upto 45 degrees Celsius) different charging and discharging rates ( up to three times more than that of lead batteries)
  • A larger battery capacity will provide the proper illumination efficiency.
  • It’s crucial to remember that the battery capacity has to match the standards for lighting efficiency. If not, the street lamp won’t provide enough illumination during the wet season.

3. the latitude and temperature


The sun’s angle of inclination with the ground is larger than 15 degrees when you are in a latitude higher than that. You should thus take into account solar street lighting with movable solar panels. Additionally, the solar street light panels that are mounted on both sides of the road shouldn’t face the sun.

4.The effectiveness of heat dissipation


Another crucial element in deciding the quality of an LED light is the heat dissipation. In essence, heat dissipation is just the transport of heat. Dissipation, however, also describes heat loss brought on by unfavorable outcomes. As a result, the lifetime of the semiconductor device in the street light is reduced each time the heat dissipation is insufficient. To guarantee proper heat dissipation, it is preferable to use LED lights that are anti-ultraviolet and fireproof.

5. The amounts of illumination


When evaluating solar street lights, pay attention to the footcandles since they affect how well the floor is lit. A minimum ratio of 3:1 is also beneficial, however a bright/dark ratio of 4:1 is ideal. You should also take the color temperature into account, which is expressed in degrees Kelvin.

6. The black light housing’s temperature


Light-colored bulbs are preferable than black-colored ones since the latter are more heat-absorbing. The metal shell’s temperature may rise to 90 degrees Celsius underexposure if the light is black. The battery and the LED light source will both be ruined by the high temperature. Choose a silver shell that won’t absorb heat or tarnish when used outside.

7. The supervisor


Solar controllers, sometimes referred to as charging and discharging controllers, coordinate the operations of solar panels, storage batteries, and loads. The selection of a controller must take into account an efficient heat dissipation function. Temperature adjustment is another crucial component. To stop solar batteries from being overcharged or undercharged, a sophisticated controller has been incorporated. A smart solar controller with integrated connectivity that enables real-time system monitoring and control would be a superior investment. The controller would provide top efficiency and durability.

8. The sensors


The sensors come in two varieties:

  • Induction microwave ( can sense moving objects)
  • thermal induction (detect only temperature-bearing organisms)

Many solar street lights use a PIR, or passive infrared sensor, to aid in energy conservation. The sensors function by detecting infrared light, which enables them to detect movement.

9. The solar regulator


The panels, loads, and batteries are coordinated by the solar controller. Therefore, it’s crucial to choose a controller that offers you these advantages:

  • a good ability to dissipate heat
  • Temperature adjustment
  • To avoid charging too much or too little
  • integrated dialogue and interactive control
  • continuous system monitoring
  • maximum effectiveness and endurance

10. The solar panel

The major part of the solar street lighting system is the solar panel. You should: to assess the solar panels’ quality

Verify that the silica gel is applied evenly to the back, backplane, and frame.
Check the cell arrangement regularity of the string welding for leaks.
Check the back’s pressure quality for anomalies like bubbles and creases.
Look for any foreign objects on the tempered glass surface of the battery panel.
Make certain that every battery cell is finished and produced using integral cutting.

11. Warranty and service

Investing in solar street lights is undoubtedly expensive. Therefore, you must check that the manufacturer gives a 20–25 year extended warranty term. Additionally, search for trusted solar street light vendors who provide top-notch after-sale support.
Also Read: Choosing Between Different Types of Solar Street Lights Battery Swapping: The Promising Future of EV

It is also helpful to be familiar with the many kinds that are offered on the market when picking solar street lighting.

Solar pole lamps


The solar panels of this type are fastened to the poles. Because the sunshine impact is negligible and the absorption effect is only one-fifth of that of conventional solar lights, this panel placement has several drawbacks. Additionally, when the sun is directly above, the absorption rate is almost zero.

hybrid street lights powered by solar and wind energy

Because the conversion mechanisms of this model varies, so does the conversion equipment. The battery’s lifespan will be shortened if wind energy is utilized to charge it. Therefore, if you’re seeking for solar lights that will survive for a long time, this model may not be the best option.