A solar streetlight system is a lighting system that uses solar energy, a kind of renewable energy. From the sun, the energy is taken and stored in the battery. This stored energy will be on automatically at night or based on the applied system. The built-in battery is effectively used for a whole night. 

History of Solar Lights

In 1883, an American inventor, Charles Fritts, was renowned for creating the first solid solar cell. This first solar cell reached an electrical efficiency of around 1 %. The best one today has until 20% efficiency. SDD Light is a qualified company producing solar-powered LED lights. All productions of SDD Lights provide two years warranty. This company produces high-quality products, based on the international standard of Quality Assurance System, at affordable prices. 

The system of solar streetlights integrates a solar panel, an LED light source, and a battery. The lights are designed to stay on an entire night. As the night ends, so does the power. The battery needs a recharge to get functioned again. This function will be reached as the battery keep the maximum hours of direct sunlight and other well-functioning parts. 

It requires little maintenance compared to the typical streetlight. No cables are exposed, so it is less risky from any accidents or malfunctioning due to unfavorable weather conditions.  

Nowadays, the use of solar-powered LED lights is widespread. Although the price is more expensive than the traditional ones, this system of lighting is about to be used by both rich and middle-class households. If you are the latest to mention and about to install the solar-powered streetlight, here is the list of their advantages dan disadvantages to consider.  

The Advantages Solar Lights

• Solar-powered LED streetlight provides low energy consumption. It starts automatically and is designed for dusk to dawn lighting operations. 
• It has a predictable lifetime. The luminous output will decrease slowly as a sign to be recharged. The information features usually provide the length of standby time.  
• It has good accuracy in color rendering. The index of color rendering is the light’s ability to reproduce the color of the subject correctly in comparison to an ideal light source. This helps the drivers recognize potential road hazards. 
• Unlike other lights that need to heat up, these solar-powered lights come on with full brightness at an instant time. 
• It is less attractive to nocturnal insects. The group of insects casually approach the lights at night and may obstruct the lighting for the pedestrians and drivers. Some insects prefer ultraviolet lights rather than solar-powered ones. 
• The reduced glare by directing the lights downward onto the roadway. It may lessen the sum of lights that is directed into the driver’s eyes. 
• Even at low temperatures, it produces higher light output. 

The Disadvantages of Solar Lights

• The initial cost of installing a solar streetlight system is high. Consequently, it takes several years for the savings on energy to pay for that high cost. 
• Solar-powered LED lights can create light pollution, like sky glow, as they emit more blue and green lights. These colors are very sensitive for the dark-adapted human eyes. Furthermore, the increase of blue and green content may increase the impacts on bird migration and other nocturnal behaviors. 
• Exposure to the white LED bulbs may suppress melatonin production. Melatonin is a hormone produced by our brain in response to darkness. The results of less melatonin are poor sleeping and rest periods. 
• Long-term exposure to the LED lights dan their high level of radiation may cause harm to the retina of human eyes. 

As the disadvantages seem to be less to find than the advantages, more small and large cities throughout the world have decided to convert from the conventional streetlight to LED lights. Concerning the health and environmental issues, it can be reduced by using them in less risky areas, where the advantages to the human being are to be met halfway.

However, there is a lot to think about before installing a solar streetlight system. Since the installment is closely related to health and environmental issues, some surveys around the environment and about the equipment should be done carefully and elaborately. Hope it can reduce the harm.