Tag Archive for: Solar Powered Street Lights

How to choose batteries for your solar street lamp project?

Outdoor Solar street lamp battery equipment has a built-in type, Pole mount type, and buried type.

solar street light battery

                             Built-in type                            Buried type                           Pole mount type

Built-in is the lithium battery pack integrated together into the lamp body; If an external pole mount type is selected, it is better to install the equipment on the solar street lamp with a height of 6 meters, and there should be no climbing objects beside the solar-powered streetlamp, also pay attention to anti-theft. If to choose the buried type, it is best to pay attention to anti-theft, waterproof, pouring cement ground to density, and replaceability.

The battery is a very key component of the solar-powered street lights system, and also a major component of the solar-powered street lights system cost. At present, solar street lamps mainly use Gel batteries and lithium batteries.

First, explain the concept of both:

Gel batteries belong to a development classification of lead-acid batteries. The method is to add a gelling agent in sulfuric acid to make the electro liquid of sulfuric acid become colloidal. Electrohydraulic colloidal batteries are commonly referred to as colloidal batteries.

 

The lithium battery is a kind of lithium metal or lithium alloy as a negative material, using a non-aqueous electrolyte solution, compared to a commonly used colloidal battery, the lithium battery is more environmentally friendly, lightweight and longer life, of course, the price of lithium battery will be slightly higher

solar street light battery in china

The lithium battery is a kind of lithium metal or lithium alloy as a negative material, using a non-aqueous electrolyte solution, compared to a commonly used colloidal battery, the lithium battery is more environmentally friendly, lightweight and longer life, of course, the price of lithium battery will be slightly higher.

 

Lithium battery

Gel battery, lithium battery have their own characteristics, but in recent years lithium battery solar street lamp systems develop much better, what are their advantages? Let’s briefly compare the differences between the two:

 

  1. Solar-powered street lights  power supply method:

Lithium battery 12V 120AH storage power, higher than the colloidal battery 12V 120AH storage power, lithium battery can be full of release, lithium battery cycle high life is 3~5 times than the colloidal battery.

 

  1. The maintenance cost of solar-powered street lights

Gel battery service life in 2-3 years, lithium battery service life in 5~8 years, to ensure almost no maintenance costs.

 

  1. Are solar-powered street lights environmentally friendly?

Gel battery production pollution is serious, can not be recycled and used, heavy metal pollution is serious, non-environmentally friendly batteries;

The lithium battery is an environmentally friendly battery, lithium belongs to the light element, is harmless to the human body, iron in the soil is ubiquitous.

 

  1. The material cost of solar led street lights:

Gel battery production technology is difficult, high cost; Lithium-ion batteries are environmentally friendly and cost slightly more than colloidal batteries. But overall accounting down, the lithium battery solar street lamp cost is more cost-effective.

  1. The installation cost of solar led street lights:

Gel battery is relatively bulky, generally need to be buried, must do waterproof anti-theft work, installation labor cost is high, late maintenance cost is also very high; Lithium battery is lightweight, high energy density, generally integrated in the inside of the lamp body or under the solar panel, the battery installation does not need labor costs, the maintenance is simple and convenient.

solar street light design

By comparison, we can see why more and more solar street lamps look less bulky than before, due to the use of lithium batteries. The lithium battery is used in solar street lamp systems, and has the advantages that ordinary Gel solar street lamp battery does not have:

I. The charging and discharging system of lithium batteries generally adopts the integrated structure of lithium battery and controller, which is an energy storage battery system with no pollution.

II. According to the user’s demand, the remaining capacity, operation days and nights, weather conditions, and other factors can be intelligently optimized and calculated, and the power level can be reasonably distributed. The functions of light control, time control, and memory storage, to ensure the intelligent setting of the solar street lamp system.

III,  Lithium battery due to dry battery nature, more stable than Gel battery, safer.

IV,  Lithium battery weight is light, the same capacity specification weight is about 1/6-1/5 of the lead-acid Gel battery;

V,  The environmental adaptability of lithium battery is stronger, the use of a wide temperature range can be used in the -20℃- 60℃ environment, after technical treatment, even can be used in the -45℃ environment, which also provides conditions for the promotion of solar street lamps in cold areas.

 

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solar led street light

Solar LED Street Lights Application Analysis

When Greta Thunberg, a Swedish environmental teenager, chose to sail the Atlantic for two weeks before arriving in New York for the United Nations’ youth climate summit, Luxmanlight employees were actively promoting the use of Integrated Solar LED Street Lights around the world. Different views on the same event just represent our different ideas on environmental protection.

The all in one solar LED street light is the product of modern science and technology development. It directly uses solar energy for power supply, environment-friendly, and energy-saving. With the characteristics of once investment and long-term return, traditional street lamps and an LED street lamp is gradually replaced. The solar street light with an automatic lighting system is generally used for street lighting of urban and rural roads. The intelligent street lighting system can realize the intelligent monitoring and management of street lights and reduce the operation and maintenance cost of the system. Thanks to its stable performance, easy management and no need for electricity connection, it is becoming more and more popular. Solar LED street lamps are used in parks, communities, squares, and parking lots from remote rural areas to cities. According to our customer’s experience, now we summarize the main installation locations of solar street lamps.

 

Application location of solar LED street lamps

  1. Rural road lighting

The rural natural environment is harsher, not suitable for laying cable. Solar lamp installation is simple, long service life. Moreover, rural roads are narrow and small, and the requirements for LED light sources are not high, which is suitable for installing stand-alone solar LED street lights.

solar road lightsolar street light

  1. Monitoring and lighting of farms, barns, doorways, and courtyards

House installation of solar street lights not only very convenient night lighting, but also can be equipped with a camera monitoring function. In the meantime, installation is simple, still can save a lot of electricity bills. Current standard configuration with light control, will according to illumination (brightness) automatically turn on-off the light, auto-off in the day, auto-on light at night, very simple and convenient.

  1. Homestay, resort, and hotel outdoor lighting

Lighting safety, environmental protection, and energy-saving are the pursuit of the concept of homestay and hotel, so the solar street lamp is the right choice.

  1. Mining area, remote power shortage place lighting

Mining areas are usually quite remote, so the cost of installing street lamps by cable is very high. Therefore, it is appropriate to choose a solar street lamp. Luxman solar LED street light works 12 hours a night and can support 5-7 rainy days. The road may still be rough, but it is no longer dark and safe to travel.

  1. Island lighting

There is no doubt that islands are short of electricity, especially the remote, smaller islands, which are 100% short of electricity. Diesel power doesn’t work 24/7 and there are always dark hours, but solar lighting will keep your nights dark no matter how windy or rainy.

  1. Monitoring and lighting of the home town villa

Many young people like to live in the city, where the house is only for old people and children or no one lives. Therefore, a kind of solar street light with a camera that can be illuminated and monitored is very suitable for use. like Luxman S3C Series solar street light with a camera for residential areas.

  1. The lighting of urban roads and secondary trunk road

Energy-saving and emission reduction can be achieved not only by using AC Powered LED lighting, but also by using more advanced solar-powered street lighting without electricity bill, which can be invested once and be effective for a long time.

  1. Square, parking lot, playground lighting

There’s a lot of traffic in public places, but it’s usually only in the early hours of the night. The intelligent solar street lamp can do induction mode(PIR), time control mode, and can also do induction + time control hybrid mode, so it can meet the lighting use in public places.

  1. Schools, hospitals and museums outdoor lighting

Environmental protection is everyone’s business. The low-carbon concept must be promoted from schools to hospitals, exhibitions, museums, and another outdoor lighting. Integrated solar street lamps not only meet the lighting needs but also have a prominent environmental protection demonstration effect.

solar garage lightssolar campus lighting

  1. Park and green space lighting

In general, the lighting of parks and green Spaces does not require high illumination on the ground (compared with outdoor stadium lighting). Intelligent solar street lamps are the best choice for lighting in these public areas.

  1. Community road lighting

The lighting of community roads and garden roads in the community has changed from traditional lamps to LED lamps and then to solar street lamps, which is the trend of the times.

  1. Industrial zone, science, and technology park, road lighting

In industrial areas, science and technology parks or innovation incubators park, no matter traditional lighting or LED lighting which used for public electricity, it is not as cost-effective as solar street lamps after cost accounting.

13.Outdoor camping lighting

The installation of LED solar street lamps in some of the best places for camping not only solves the main problem of campers but also ensures their safety to some extent.

In the future, more than 70% of roads and lighting are expected to use solar street lamps, compared with less than 5% today. At present, the price of a solar street lamp is mainly set according to the level of parameter configuration, and the service life is closely related to the configuration. The solar street light manufacturer offers a five-year warranty, which is favored by many customers.

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solar pole light

Solar Powered Street Lights Pay Back vs Grid. -LUXMAN

After 10 years’ development and practice, LED street lighting technology has become very mature and stable. About five years ago, another new type of solar Powered Street Lights appeared in people’s eyes. It is All in One Solar Powered Street Light. This kind of street light does not need to connect to the power grid, does not need electric wires, compact design, simple to install, and easy to maintain. In recent years, more and more people have paid attention to the product, especially in some areas where the power grid is not accessible, or in countries and regions with high electricity costs.

Solar-Powered-LED-Street-Light

The All in One Solar Powered Street Lights is the third generation solar street lighting product developed from the ordinary solar street lamp. After the development of battery technology and practical installation in recent years, the all in one solar LED street lamp technology has become very stable, so what is the return on investment vs Grid LED Street light?

Suppose a 5KM road with lights on both sides, 30 meters apart, and the lamp power is 40W, the pole 6 meters high.

  • 167 street lamps are installed on each side of the road, a total of 334units.
  • The load flow of cable of traditional street lamp trunk line in 4 and 5 kilometers road is I=P/U=333*250/220=377A, which requires copper core cable with a cross-section of 90mm². The unit price is 32USD/m2(Including labor cost). The cable cost is 32USD*5000m=160,000.00USD, Each lamp pole needs 12M 1.5 square electric wires, and the cost is 12M*334*0.5=2004USD
  • Each Grid LED street lamp needs to be equipped with an air switch to prevent short circuits, switch and facilitate maintenance. A total of 334 air switches are required. Then the total cost of the air switch is 2USD*334=668USD
  • This section of grid LED street light needs one distribution box with an internal time controller, control lights on and off, air switch, over-current & overload protector, watt-hour meter and so on. The total cost of 900USD requests.
  • The labor cost is 43USD per person per day, based on the cement road. According to our experience, with six workers, the all in one solar street lamp needs about 2 weeks of installation time, 10*6*43USD=2580USD, while grid street lamp needs about 3 weeks because of the connecting electric wires and other reasons, depending on the efficiency of the workers, the cost is not yet including car rental fees.
  • The following calculation is based on LUXMAN 5-year warranty all in one solar Powered Street Lights. Because of stable quality and LUXMAN will pay any cost of the after-sales problems, so this calculation is not included in the after-sales maintenance cost.
Item Grid LED Street Light All in One Solar Powered Street Light
Luminaire cost USD90.00*334=30,060USD USD300*334=100,200.00USD
Electricity bill

(5 Years)

40/0.8*12*365/1000=219kwh

219*334*0.15USD/kwh=10971USD

10971*5=54855USD

0
Electric cable cost 5000M*32USD=160,000USD 0
Pole Inner electric cable 334*12*0.5USD=2,004USD 0
Air switch 334*2USD=668USD 0
Distribution box 900USD 0
Labor cost 6*43usd*15days=3,870USD 6*43usd*10days=2580USD
In Total USD252,375.00 USD102,780.00

Above prices were quoted by China’s market price level.

All prices vary depending on your circumstances. Your geographic location is the largest determinant,

Conclusion:

  1. Compared with Grid LED street lamps, all in one solar street light can save a 60% cost in 5 years.
  2. Electricity cost and electric cable cost are the two main costs of AC LED street light.

 

 

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