Solar Street Light is a type of outdoor lighting system that stores electricity produced by solar panels in batteries for use at a later time. In India, Solar Street Lights are a useful option for outdoor lighting. Given the abundance of sunshine in the nation, Solar Street Lights present a sustainable way to light up the streets. 

Factors like light brightness, battery size and capacity, weather resistance and durability, and overall quality and dependability should all be taken into account while selecting the best solar street light in India.

Since Solar Street Light Price in India is an affordable and environmentally responsible replacement for conventional street lighting systems, they are growing in popularity in cities all over the world. It requires less maintenance and uses less energy.

The best solar street lights in India differ from other lighting alternatives in several ways. They are also simple to install and self-sufficient, making them a practical and trouble-free lighting option. As the top solar panel manufacturers in India, Ciel Globals Solar Street Lights provide excellent performance at a reasonable cost. Ciel Globals also offers the best solar lights for homes.

Solar Street Lights are extremely energy-efficient. They make use of LEDs, which have an extended lifespan and low energy consumption. LEDs convert a large portion of electrical energy into light, reducing wasted energy and increasing lighting. 

Solar Street Lights provide one of the most significant environmental benefits: they cut carbon emissions. Solar Street Lights use clean, sustainable solar energy instead of grid-powered lights, which rely on electricity produced from fossil fuels. Since solar lights are designed to survive rain and other weather conditions, the rain will not harm them. 

What are the Components of Solar street lights? 

The various components of a Solar Street Light system are a pole, connecting wires, solar light bulbs, battery, charge controller unit, and SPV module. 

• Module for solar photovoltaics (PV): It is mounted at the top of the pole at an appropriate inclination so that it receives the most sunlight possible all day long. The battery is charged by the appropriate voltage and current produced by the SPV module. Using the energy from the battery, the solar light bulbs illuminate during the night.
• Charge controller unit (CCU): Battery life is extended by the charge controller unit, which prevents deep discharge and overcharging. The CCU shuts off the light in deep discharge conditions to prevent more battery drain.  The CCU disconnects the solar module to stop the battery from overcharging when overcharge circumstances exist.
• Battery: The battery stores the energy produced by the SPV module.  During the night, this energy is used to light the solar light bulbs.  LiFePO4 batteries, smaller than the tubular lead acid batteries housed in the battery box-style fixture of a regular street light, are typically utilized for Solar Street Lights. The solar light bulbs contain the lithium-ion battery that powers Solar Street Lights.
• Solar light bulbs: To provide light, fluorescent (CFL) or LED lamps are utilized. In case a lithium-ion battery is utilized, both the CCU and the battery are integrated within the Solar light bulbs. If the battery is lead-acid, the Solar light bulbs just contain the CCU.  
• Connecting cables: The SPV module, battery, CCU, and solar light bulbs are all connected by cables.
• Pole: The SPV module and the solar light bulbs are mounted at a height of 4-5 meters above ground using an MS street light pole or GI pole.

What type of battery is used in solar street lights?

In Solar Street Lights, three primary battery types are utilized: Lead-acid batteries, Lithium-ion (Li-ion) batteries, and Lithium-ion phosphate (LiFePO4), the most recent development in lithium battery technology.

1. LiFePO4 batteries: LiFePO4 batteries are lighter and recharge more quickly than lithium-ion batteries. They also provide four to five times the number of charge cycles and a ten-fold longer lifespan than conventional lead acid batteries. LiFePO4 batteries are more expensive than other battery types but offer protection against both high and low voltages.

2. Lead acid batteries: These batteries are cheap and have a high current capacity, but they have a shorter lifespan and require frequent maintenance.

3. Lithium-ion batteries: Although they are thought to be pricey, lithium-ion batteries have a longer lifespan and require very little maintenance.

What are the different types of solar light bulbs?

Three primary types of light bulbs are utilized in Solar Street Lights: sodium vapor, CFL, and LED models.  

1. LED lights: LEDs are most frequently utilized in Solar Street Lights because they provide more brightness at a lower energy consumption. On cloudy days or in partially shaded places, solar LED lights can still be charged and function. Even if it is not directly exposed to the sun, the solar panel will still absorb energy from sun. 

• Technical Description of LED Solar Street Lights
  • Lamp : 9 LED (11 Watt)
  • Battery : 12 V / 40 Ah. Tubular / SMF
  • Module : 12V / 40 Wp
  • Pole : MS 5 meter
  • ON/OFF : Dusk to dawn
  • Body : Metallic Coated
  • Efficiency : More than 85 %

2. CFL lights: CFL lights require more electricity than LED lights because they use low-pressure mercury vapor gas. 

• Technical Description of CFL Solar Street Lights
  • Lamp : CFL 11 Watt
  • Battery : 12 V – 75 Ah. Tubular / SMF
  • Module : 12V / 74 Wp
  • Pole : MS 5 meter
  • ON/OFF : Dusk to dawn
  • Body : Metallic Coated
  • Efficiency : More than 80 %

3. Sodium vapor lamps: These lights are gas-discharge lights, which are recognized for excellent efficiency. However, they only provide monochromatic color and generate more heat than LED light bulbs.

Which type of sensor or controllers are used in solar street light?

In Solar Street Lights, two different types of controllers are used: PWM and MPPT.

1. Pulse Width Monitor (PWM) Controller: When using a pulse width monitor (PWM) controller, the battery’s reserve capacity, lifespan, and panel voltage are all extended.  

2. MPPT Controller: The solar panel can run at its maximum power point and produce more power when equipped with a maximum power point tracking (MPPT) controller. Because MPPT controllers may generate more electricity with the same amount of solar modules as a PWM controller. They are thought to be more expensive than PWM controllers.

What type of solar panels are used in solar street lights?

Best solar street light in India can be equipped with either a polycrystalline or monocrystalline solar panel.

1. Monocrystalline solar panels: These types of solar panels have a greater efficiency because they are composed of pure silicon cells. They generate more kilowatt-hours of electricity than polycrystalline panels because of their higher conversion efficiency. So these are some of the most used solar light for home.

2. Polycrystalline solar panel: Due to its cheaper cost compared to monocrystalline solar panels, polycrystalline solar panels are the most common type utilized for Solar Street Lights. They have a higher temperature coefficient and a higher power density, and they can function better even in low light. Since polycrystalline solar panels work better in hotter temperatures, they are most appropriate for use in most of India.

Solar Street Light Price in India

Best solar street lights in India range in power from 15 to 120 watts, and Solar Street Light Prices in India, including all costs, range from Rs. 2,999 to Rs. 29,999. The prices shown are for the light and any accessories without a pole.

Semi-Integrated Solar Street Light Prices in India:

All-In-One Solar Street Light Prices in India:

How many types of solar street lights are there?

There are now two main varieties of best solar street lights in India, available on the market:

1. All-in-One Solar Street Light

This kind of solar light is an assembly that includes the solar panel, LED light, battery, and solar driver card. Compared to other models, this one has far simpler installation, which lowers the Solar Street Light Price and solar panel prices for homes in India. Additionally, the LED solar lights feature a motion sensor that detects movement near the solar light and adjusts the brightness of the LED light accordingly.

Specification of All In One Solar Street Light:

2. Integrated Solar Street Lights

This kind of Solar Street Lights comes in two parts: a solar panel and a solar LED luminary with batteries. The solar panel is installed on the pole independently of the sun light; for optimal performance, it can be positioned to the exact south-facing direction. And the battery is installed on the pole or underground close to the pole within a different waterproof battery box. With just one day of charging, CIEL Globals’ integrated Solar Street Lights, which range in power from 7W to 60W LED, may last for two days.

Specification of integrated solar street lights:

What is the working principle of solar street light?

The four main parts of a Solar Street Lights are usually the solar panel, battery, LED light source, and solar driver card. Solar panels gather solar radiation and transform it into electrical energy. The solar driver card, which has an integrated solar charge controller, makes it easier to use the energy produced by the solar panel throughout the day to charge batteries. Additionally, the solar driver card automatically turns on the solar light after dusk and turns it off after sunrise.

Every day, there is one cycle of charging and discharging the battery. In modern solar streetlights, a variety of battery types are utilized (including LiFePO4, Lithium-ion, Maintenance free – Lead acid, Tubular – Lead acid, etc.) By detecting the voltage at the terminal of the solar panel, the solar driver card determines whether it is day or night. Solar panel terminals have a positive voltage of more than 10V during the day and less than 5V at night or during the evening. In this manner, the solar streetlights can be turned on or off at the best moment irrespective of the conditions.

What are the features of solar street lights?

• Automatic: Most Solar Street Lights are equipped with a dusk to dawn sensor capability that allows them to operate continuously throughout the night by sensing outside light.
• Motion sensor: A motion sensor is a feature of Solar Street Lights that helps to detect movements and adjust light intensity. This feature aids in the security lighting function of the Solar Street Lights. By lowering brightness when no motion is detected and increasing brightness when movement is detected, this helps to prolong battery life.
• Timer-based: The controller has the option to dim the lights as needed to conserve battery life.
• Energy-saving and pollution-reducing: Solar light is environmentally friendly because it uses solar energy instead of any non-renewable energy. The primary benefit of Solar Street Lights is its ability to stay lit even in the event of a power outage.
• Long-term cost savings: Solar illumination eliminates the need for recurring electricity bills, resulting in financial savings.
• Not working with cables: Solar Street Lights has no interdependency flaws. There is no requirement for foundation work, cables, or electrical equipment. There is no requirement for complex power facilities, which results in labour and cost savings.
• Simple maintenance: Solar Street Lights is safe and affordable because it has intelligence built in and doesn’t need to be operated manually after installation.
• Weatherproof: To survive extreme temperature  fluctuations, the lights are waterproofed to an IP65 standard.

Why are solar LED street lights the best?

For residential streets, parking lots, security, roadways, and general area lighting applications, solar LED street light solutions are the ideal and most affordable choice. Because solar LED lights are both economically viable and efficient in situations where the cost of supplying electricity is high or problematic. The current LPS (Low-Pressure Sodium) or MH (Metal Halide) street lights can be replaced with solar LED street lights due to their extremely long lifespan and low power usage.

The solar panels of the best solar street light in India transform solar energy into an electric current that may be stored in a battery for later use. The “day to dawn switching,” which enables solar lights to turn on automatically at night, is managed by a controller. Since the LED Solar Street Lights use free solar electricity rather than grid power, whose rates are always rising, it allows for significant long-term power savings. It is also a workable option for the government and business institutions to benefit from, requiring little upkeep.

How are solar street lights installed?

Solar Street Lights should be installed by qualified professionals. While installing, it is important to adhere to the relevant safety regulations. The chosen location should be level and free of slopes. Basic installation equipment for Solar Street Lights includes an Allen key, screwdrivers, spanner, wrench, and hoisting mechanism (which can be used to manually pull the pole upright or utilize a crane, depending on its weight). 

The solar panel, light fixture, lamp pole, battery, and controller are all included in a full street light kit. While the pole is still on the ground, the solar panel and LED light can be fastened to it. The solar panel needs to be oriented to get the most sunlight possible, hence the installation location needs to provide an appropriate angle.

Since there are parts installed on top of the pole and wind resistance is a consideration, the pole used for Solar Street Lights has to be sturdy. The manufacturer’s instructions should be followed while attaching the Solar Street Lights to the ground. Installing the light at a spot that receives direct sunshine all day long and is free of shadows is crucial. 

Do solar street lights need maintenance?

Even though Solar Street Lights require very little maintenance, dust should be removed from the solar panels. The efficiency of the panel will improve with cleanliness. Longevity of the solar panels is ensured by cleanliness. Regularly inspect the cables for chewed conduit and wires. Additionally, check the fixture for any issues caused by wildlife, weather, or vandalism. The tilting shape of solar panels prevents water from standing still when it rains. 

IP65 waterproofing is designed to endure harsh weather conditions. For the solar panels to produce the most brightness, they should not be shaded. If there are any tree branches blocking the light, trim them down. A soft-bristled brush or cloth dampened with a light shampoo or detergent can be used to clean the solar panel. To remove any dust or grime, you can also hose off the panels. When cleaning, take care not to scratch the glass.

Conclusion

In India, Solar Street Lights provide a practical and environmentally friendly lighting option for rural regions. They are the best option for lighting isolated villages because of their affordability, reliance on renewable energy, decreased reliance on the grid, and low maintenance requirements. In addition to increasing economic prospects and safety, Solar Street Lights help empower rural communities and advance overall development. Solar street lights in India have a bright future due to government plans assistance and encouraging measures, which will guarantee a more sustainable and brighter future for the countryside.