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2024 Solar Street Light Price

2024 Solar Street Light Price Composition and Influencing Factors

Solar street lights are environmentally friendly street lights powered by solar energy, which are used to replace traditional public electric lighting. The price of solar streetlights is affected by factors such as the height of the light pole, the brightness of the lamp head, the power, and the length of the lighting time. Generally, the price of a full set of solar streetlights with normal configuration is around US$400 – US$1,000.

When purchasing solar street lights, you should consider their detailed configuration and choose a brand manufacturer with a good reputation and strong strength based on the needs of the road. Let’s learn how to choose solar streetlights.

solar light price list

1. What is a solar street light working principle?

The working principle of solar streetlights is: that under the control of the intelligent controller, the solar panel absorbs solar light during the day and converts it into electrical energy to charge the battery pack. At night, the battery pack provides power to the LED light source to realize the lighting function. The excess electricity can be stored to ensure normal operation in rainy weather.

solar street light working principle

 

2. Composition of solar street light prices:

Solar street lights are powered by crystalline silicon solar cells, maintenance-free valve-controlled sealed batteries (lithium batteries) to store electricity, ultra-bright LED lamps as light sources, and controlled intelligent charge and discharge controllers to replace traditional public electric lighting street lights. Solar streetlights are composed of LED light sources, solar panels, batteries, battery insulation boxes, controllers, lamp poles, and auxiliary wires. Commonly used component parameters and reference prices are:

Light source: 40W-80W (45$-80$)

Photovoltaic panels: 80W-120W (30$-35$)

Batteries: 30AH-100AH ​​(65$-150$)

Photovoltaic controller: 10A-100A 12V-24V (20$-30$)

Lamp pole: 3m-12m height (50$-230$)

20W-40W integrated solar street light: $65-70$
12W-30W integrated solar street light: $75-120$
24W-40W integrated solar street light: $135-150$
24W-40W integrated solar street light: $150-168$
30W-50W integrated solar street light: $170-180$
40W-60W integrated solar street light: $185-200$
60w-80w integrated solar street light: $185-238$
100w-120w integrated solar street light: 265$-340$

best solar street light manufacturers in Brazil

3. 6 Factors affecting the price of solar street lights:

a. Lamp pole shape. For example, municipal street lights have some shapes and require longer working time. Therefore, the shape of the lamp pole will affect the price. Especially for some government projects, the price difference will be greater;

b. Full power working time. Normal solar streetlights will set the energy-saving mode according to the traffic flow curve, which can save power consumption and reduce the configuration of the solar system. However, if the full power working time is required to be high, such as 6 hours of 100% brightness and 6 hours of 50% brightness, the price will increase a lot.

solar street light working time

solar street light working time

c. Number of lamp heads. If it is made into double lamp heads, triple lamp heads, etc., the solar panels and lithium batteries will increase exponentially, and the diameter and wall thickness of the lamp pole will also be larger to meet the wind resistance requirements. Calculated in that way, the price is completely different.

d. Average illumination, uniformity, and luminous flux maintenance number. The international urban road lighting standards have clear numerical requirements for average illumination, uniformity, and luminous flux maintenance numbers for roads and intersections of different levels. For example, the average illumination of a first-class road should reach 30-30LUX, with a uniformity of 0.4; the second-class road should reach 15-20LUX, with a uniformity of 0.4.

To achieve this requirement, the light efficiency, power, and light distribution of the lamps must be taken into consideration. The actual driving power of the lamp is large, and the solar panels and lithium batteries are configured larger. The unit price is naturally higher.

solar street light luxsolar street light dialux

e. Wind resistance level requirements. Normal municipal engineering requires a wind resistance level of 12 or above. The requirements in various places are slightly different. In addition, the large area of ​​solar panels and the weight of large lithium batteries require the caliber, wall thickness, and flange size of the lamp pole to be larger. Naturally, the price will be higher.

f. Warranty period requirements. Municipal engineering must have a certain proportion of the final payment to be accepted and paid off. In addition, a certain proportion of the warranty deposit must be reserved, and this warranty deposit can generally be collected after the warranty period expires. The requirements for municipal engineering are relatively high, and the warranty period is also relatively long. Therefore, to reduce after-sales costs, manufacturers often add after-sales costs to the quotation in advance. This directly raises the price of solar streetlights.

4. How to choose a cost-effective solar street light

1. Detailed configuration

The cost-effective solar street light must have a reasonable configuration. The basic configuration of the solar street light mainly depends on the power of the lamp, the capacity of the battery, the size of the solar panel, the material of the lamp pole, etc. These parameters should be paid attention to, and avoid buying products with false capacity.

2. Road requirements

The height and spacing of solar streetlights need to be determined according to road requirements. First, you need to know the width of the road used by the solar street light, to choose to use a single-arm or double-arm solar street light; secondly, look at the interval between the solar street lights, and choose the brightness of the lamp power; finally, the height of the solar street light pole should be considered to determine the size of the lamp power and brightness.

3. Warranty time

Generally, the warranty period for solar streetlights is 1-5 years. The longer the warranty period, the more guaranteed the quality of the street light, but the price will also be relatively higher.

4. Brand

When purchasing solar streetlights, you should pay attention to the strength and reputation of the brand manufacturer. This can be learned through online inquiries. You can consult various brands to understand the specific strength of the manufacturer and compare prices to choose products with good quality and high-cost performance.

5. Advantages and Disadvantages of Solar Street Lights

Advantages:

1. Easy installation: When installing solar streetlights, there is no need to set up complex auxiliary lines. Just make a cement base, make a battery pit, and fix it with galvanized bolts. It does not require a lot of manpower, material resources, and financial resources. The installation is simple, and there is no need to string wires or “open the belly” to dig the ground for construction, and there is no worry about power outages.

2. Low investment: Solar street lights are a one-time investment and have long-term benefits. Due to the simple lines, there is no maintenance cost and no expensive electricity bills. The cost is recovered in 6-7 years, and more than 100,000-200,000 US dollars in electricity and maintenance costs are saved in 3-4 years. It can save the high electricity bills of city circuit lights, complex lines, and long-term uninterrupted line maintenance. Especially in the case of unstable voltage, it is inevitable that sodium lamps are easy to break, and as the years go by, the line ages, and the maintenance costs increase year by year.

3. Good safety performance: Solar street lights use 12-24V low voltage, stable voltage, reliable operation, and no safety hazards. They are ideal products for ecological communities and road administration departments. There are no accidents such as electric shock and fire. The safety hazards of municipal street lights are great. People’s living environment is constantly changing. Road reconstruction, landscape construction, abnormal power supply, cross-construction of water and gas pipelines, etc. bring many hidden dangers.

4. Energy saving and environmental protection: Solar photovoltaic conversion provides electricity, which is inexhaustible. No pollution, no noise, no radiation. Solar streetlights can add new selling points to the development and promotion of noble ecological communities; they can sustainably reduce property management costs and reduce the public share of owners. In summary, the inherent characteristics of solar lighting, such as safety, no hidden dangers, energy saving, no consumption, green environmental protection, easy installation, automatic control, and maintenance-free, will directly bring obvious advantages to the sales of real estate and the construction of municipal projects.

5. Long life: The life of solar lamps is much longer than that of ordinary electric lamps. For example, the main component of solar lamps, the solar cell module, has a service life of 25 years; the average life of low-pressure sodium lamps is 18,000 hours; the average life of low-voltage high-efficiency tri-color energy-saving lamps is 6,000 hours; the average life of ultra-bright LEDs is more than 50,000 hours; the life of solar-specific batteries is 2-5 years for batteries below 38AH; 3-7 years for batteries between 38 and 150AH.

The product has high technological content, and the control system and accessories are all international brands, intelligently designed, and reliable in quality. According to the regulations of the local Price Bureau of conventional communities “a one-time fee of 1$/㎡ for community street lamp maintenance is charged based on the pure residential building area”, the initial investment of ordinary lamps is much higher than that of solar lamps. In short, the comprehensive comparison shows that the investment-saving feature of solar lamps is quite obvious.

solar street light advanteges

Disadvantages:

1. High cost, the initial investment of solar street lamps is relatively large, and the total cost of a solar street lamp is 3.4 times that of conventional street lamps with the same power.

2. Low energy conversion efficiency. After the actual installation of solar photovoltaic cells, the conversion efficiency may be about 15%~19% due to the obstruction of surrounding buildings.

3. Affected by climatic conditions. Since it relies on solar energy to provide energy, the local geographical climate and weather conditions directly affect the use of street lights. Long rainy days will affect the lighting, resulting in illumination and brightness failing to meet national standards or even no lighting.

4. Low service life and cost performance of components. The price of batteries and controllers is high, and the batteries are not durable enough and must be replaced regularly. The service life of the controller is generally only about 3 years.

5. Low reliability. Due to the great influence of external factors such as climate, the reliability is reduced.

Quality solar street light

Conclusion

When you are looking for a battery and pole for solar street lights, consider the aspects talked about during the article, which will help you choose a suitable, high-quality solar street light to avoid losses.

We recommend purchasing solar street lights from reputable manufacturers only because they provide good biggest deals and high-quality solar street lights. Aside from that, they often offer discounted rates for bulk orders.

Bonus: ClodeSun Solar

ClodeSun (CLODE Optoelectric Co., Ltd.) was established in 2013. Headquartered in Shenzhen, it is a high-tech enterprise in China. But ClodeSun sells a lot of products in Europe.

Clodesun launched a foldable all-in-one solar street light in 2022, which was designed by our German team for more than 1 year and tested for 2 years. This light stands out among various integrated solar streetlights. It is widely praised by customers all over the world.

    Solar street light project in Malaysia

    250 Sets of Solar Street Lights don’t work at Night in Malaysia

    Ms. Varie from Malaysia said that the solar street lights on both sides of a township road in front of her home had been damaged for three or four years but had not been repaired and had become a decoration, causing them a lot of trouble when traveling at night. Malaysian citizens have repeatedly No corrections have been made to the reports.

    Ms. Varie said that there are 6.6 kilometers of township roads in Kuala Lumpur, Malaysia. Two rows of street lights along the road are not lit all year round. Nearly 5 kilometers of them are solar panel street lights and 2 kilometers of street lights are powered by the grid.

    SOLAR STREET LIGHT NOT WORK AT NIGHT

    Since there is no other lighting at night and the road conditions are dark, vehicles will turn on their high beams when passing by, especially dump trucks with high beams on. Ms. Varie always feels frightened every time she rides by.

    This road is an important traffic artery in Kuala Lumpur, Malaysia. Many people come here to run at night. In addition, many citizens pass by on bicycles. When there are more cars and people, the street lights become decorations, which naturally poses a huge safety hazard. Neighboring residents said they did not dare to cross the road at night.

    Ms. Varie said: “It’s crab season, and some people at home want to come up to sell crabs. They all set out from home at one or two o’clock in the morning. Tricycles don’t have very bright lights. If you wear a headlight, the light will be too bright. It will irritate the cars coming from the opposite direction, so it is very dangerous. I hope the problem of solar streetlights can be solved as soon as possible and not be delayed like this. ”

    solar street light project in Malaysia

    The reporter learned from the local transportation department that they completed the construction of more than 250 solar panel street lights in September 2020. Maintenance was done due to damage in the early stage. As a result, these street lights were completely damaged one after another in 2022. Due to this kind of street lights, Maintenance costs are high, so they plan to convert it into grid-powered street lights.

    A staff member of the comprehensive planning section of the transportation bureau in this district said that there is a battery under the solar panel. At that time, this new technology had just come out, and the technology was not as complete as it is now, so a street light renovation plan was made. Currently, four roads in the district have the problem of “blindness” of street lights and need to be repaired uniformly.

    all in one solar street light in Malaysia

    They will start promoting this urban construction project in 2023, and they have to wait for financial allocations to complete the street light renovation. According to the urban construction project process specifications, the transportation department needs to outline the project plan every year and submit it to the urban construction department for summary. After discussion and approval by the district government, the project bidding can be initiated, and funds can be invested to promote implementation.

    Another staff member said, “If the four roads are built together, the volume will be quite large because doing it in batches does not comply with the bidding process. The plan has been submitted in 2022 and the project has been approved. However, due to funding, The reason has been put on hold, and we have also given feedback to the government, including communicating with the finance department, which is also currently looking for ways to raise funds to implement this matter. ”

    The Urban and Rural Development Bureau stated that due to insufficient financial funds, the street light maintenance plan reported by the transportation department was canceled in 2023, and the plan for 2024 is still being prepared.

    Understandably, there is no money to invest in replacing solar panel street lights in a short period, but what puzzles Ms. Varie is that the nearly 2 kilometers of street lights powered by the grid were only installed last year. Why can’t they light up normally at night?? What Ms. Varie is confused about is that it can be used for normal lighting by turning on half the light or every few lights.

    400w solar street light

    Staff from the Comprehensive Planning Section of the Transportation Bureau said👇
    If all these street lights are turned on, the overall electricity bill will be very scary, one to two thousand US dollars a day. There are two situations of turning on the lights and not turning on the lights. The first is automatic control based on light, and the second is based on holidays, which is equivalent to scene decoration. Because only municipal roads have lighting regulations, street lights on highways are the “icing on the cake”.

    solar street light work in rainy days

    solar streetlights work on rainy days

    Solar street lights have reached the time of wear and tear, to be exact, starting in 2021, some solar street lights are damaged. In 2021, we have already discussed with the urban construction department to transform solar street lights and include them in the 2024 urban and rural construction plan. This is expected to be ready within the year as all preliminary design work has been completed.

      CM 100W solar street light

      100W Solar Street Light with Pole Price

      The price of 100W solar street lights is approximately between 200$-350$. The price of a 10-meter pole is approximately 100$-180 $ (including lamp post arms and ground cages). The main cost difference of solar street lights lies in the parameter configuration of the lamp head, such as the wattage of the photovoltaic panel, battery capacity, and the material used. For example, the prices of polycrystalline silicon photovoltaic panels and monocrystalline silicon photovoltaic panels are different; panels of the same material but different sizes; prices of lithium iron phosphate batteries and gel batteries differ; factors such as different capacities of the same battery, etc.

      solar street light with pole

       100W solar street light price list :

      Lamp head power: 50W-120W; Solar panel: Monocrystalline silicon 130W solar panel; Solar panel size: 1686*405*60mm; Battery: A-class 12.8v 45AH lithium iron phosphate battery; Lamp pole height: 10 meters (including floor cage), lamp arm, photovoltaic panel bracket); control method: light control; lighting mode: (100% brightness for 2 hours at the 1st time; 70% brightness for 3 hours at the 2nd time; 50% brightness for 3 hours at the 3rd time; 50% brightness at the 4th time 30% brightness for 4 hours; a total of 12 hours per day) for 3-5 rainy days; effective irradiation area: 150-180 square meters; a solar street light with the above parameters is quoted at US$220.

      CM 100W solar street light

      Lamp head power: 50W-120W; Solar panel: Monocrystalline silicon 140W solar panel; Solar panel size: 1400*610*250mm; Battery: A-class 12.8v 50AH lithium iron phosphate battery; Lamp pole height: ten meters (including floor cage), lamp arm, photovoltaic panel bracket); control method: light control; lighting mode: (100% brightness for 2 hours at the 1st time; 70% brightness for 3 hours at the 2nd time; 50% brightness for 3 hours at the 3rd time; 50% brightness at the 4th time 30% brightness for 4 hours; a total of 12 hours per day) for 3-6 rainy days; effective irradiation area: 150-190 square meters; a solar street light with the above parameters is quoted at US$280.

      CF 100w solar street light

      Lamp head power: 50W-120W; Solar panel: Monocrystalline silicon 140W solar panel; Solar panel size: 670*835*30mm; Battery: A plus-class 12.8v 56AH lithium iron phosphate battery; Lamp pole height: ten meters (including ground Cage, light arm, photovoltaic panel bracket); control method: light control; lighting mode: (100% brightness for 2 hours at the 1st time; 70% brightness for 3 hours at the 2nd time; 50% brightness for 3 hours at the 3rd time; 4th time 30% brightness for 4 hours; a total of 12 hours per day) for 3-7 rainy days; effective irradiation area: 150-200 square meters; a solar street light with the above parameters is quoted at US$320.

      Palm tree 100w solar street light

       

      solar street light work in rainy days

      Can Solar Street Light Charge without Sun?

      Solar streetlights are powered and stored by solar energy, so if there is no sun, can solar streetlights charge and work in long-term rainy weather?

      Solar street light working principle description: during the day, solar street light under the control of the intelligent controller, the solar panel is irradiated by sunlight, absorbing sunlight and converting it into electricity, The solar cell module is charged during the daytime by the battery pack power supply, and at night by the battery pack for the LED light source power supply, to achieve the lighting function.

      solar street light smart controller

      Can solar streetlights work on rainy days?

      Solar street lights are waterproof and have batteries to store energy, engineers have considered the rainy day situation when designing solar street lights. So the solar street light can work on rainy days.

      If it is rainy for several days in a row, it depends on how many consecutive rainy days the configuration and technology of the street light can support.

      solar street light charge with sun

      solar street light charge with sun

      Can the solar street light be charged on rainy days?

      Solar panels can be charged on rainy days, but the amount of charging varies depending on the time of the day. Solar street lamps are equipped with battery charging and discharging devices, usually, enough sun will charge itself, and rainy days rely on battery power to maintain the street lamp power.

      Solar energy in the sun’s light, charging volume. On cloudy days, the sun’s light is weakly charging volume is also relatively weak but still can be charged.

      solar street light work in rainy days

      solar streetlights work on rainy days

      Some manufacturers say that their solar streetlights can stay on for 365 days. Is this true?

      After understanding the working principle of solar streetlights, we know that the working mode of solar energy needs to follow the principle of energy conservation. Also according to the principle of energy conservation, if there are continuous rainy days for a long time because charging is less than discharging, some manufacturers promote “solar energy” The statement that “street lights are on every day, 365 days a year” is inaccurate and misleading to consumers.

      Due to the different designs and quality of solar street light products, The manufacturers will increase the size of the solar panels or enlarge the battery capacity to cope with continuous rainy days. At the same time, since it can be charged on rainy days, the lights can be turned on, but the time on rainy days exceeds the set time. it can not keep the lights on all night. Therefore, if some manufacturers promote that the lights are on 365 days a day, this is unreliable.

      solar street light charge

      solar street light charge

      Some tips to extend the use time of solar street lights on rainy days

      For solar streetlights, to meet the requirements of longer continuous use on rainy days, there are three key points in the design. In terms of Accessories, additional configurations are required:

      First, to improve the conversion efficiency of solar panels, on the one hand, you can choose solar panels with higher conversion efficiency per unit area, on the other hand, you can also increase the area of the solar panels, that is, increase the power of the solar panels;

      Second, enlarge the battery capacity, because solar energy is an energy source that cannot provide continuous and stable power, So a power storage device must be needed to store the electricity and output it stably and sustainably.

      The third point is from a technical perspective, intelligent power adjustment is achieved through technical means, intelligent judgment of recent weather conditions, and reasonable planning of discharge power.

      In addition, the choice of quality is also important. The quality of battery panels, batteries, and other accessories also greatly affects their service life.

      Take the battery as an example. For example, mobile phone power banks are equipped with lithium batteries. Some power banks have a large capacity,  but they cannot be fully charged within a short period. The problem is that they are equipped with batteries of poor quality. As a result, the battery decays quickly; similarly, the same is true for solar streetlights. The quality of solar panels, batteries, and other accessories has a profound impact on it.

      Understanding the above points can better extend the use time of solar street lights on rainy days.

         

         

         

         

         

        400w solar street light

        6 Tips to Choose Solar Street Light

        Solar energy, a green energy source, and How to correctly choose solar street lamps, have received widespread attention from everyone in recent years. Today Clodesun will talk to you about the impact of parameters on product quality and how to choose an insurance solar street lamp.

        Whether solar lights are of good quality depends on three points:

        1: Brightness, the brighter the light, the more sense of security it gives people.

        2: Last hours at night, a lamp that can continue to light up all night will give people a higher degree of trust.

        3: Life span, no matter how cheap something is, you don’t want it to break after a few days of use. The price here is directly proportional to the quality.

        However, in recent years, due to the vicious low-price competition of some suppliers who lack integrity, the solar street light market is leading to an embarrassing situation full of misleading information, and disorderly competition. The price of solar street lights with the same wattage may differ by 10 times; even if they look similar, the price will differ by 2 to 3 times. This is the current state of chaos in the market.

        So How to choose Solar Street Lights, there are 6 tips as following: 

        1. Solar street light internal structure

        Solar street lights are a complex system, but this is only for the manufacturing process of the manufacturer; for dealers, contractors, installers, and users, it is very simple to distinguish the pros and cons of solar street lights! After getting samples from different manufacturers, take them apart and look at every accessory, and you have a 60% chance of seeing the truth.

        Quality solar street light

        2. Solar Street Lamps panels Size and types

        1. Power & Size: Generally speaking, the power of a solar panel depends on its size; when the prices of two solar street lights differ several times, first compare their solar panel sizes.

        All in one solar led street light

        2. Type & Efficacy: The efficiency of monocrystalline solar panels is higher than that of polycrystalline solar panels; of the same size, the power of monocrystalline solar panels is higher than that of polycrystalline ones.

        solar street light pv types

         

        √Professional solar street light 20W vs.                ×  low-price solar street light 20W

        Monocrystalline solar panel power: 35~40Wp  ×Solar panel size: 270*220 mm

        √Solar panel size: 820*272 mm                               ×Solar panel size: 270*220 mm

         

        3. Solar Street Light Controller types and Waterproof Levels

        1. Type of controller: MPPT or PWM? Usually, an MPPT controller is more efficient and costly than a PWM.

        2. IP level: IP: refers to the waterproof level of the controller, which determines the service life of the controller. As shown on the right side of the picture below, the service life of a bare-board controller without waterproof treatment is much lower than that of a controller with a high waterproof level.

        Solar street light controllers MPPT vs PWM

        Solar street light controllers MPPT vs PWM

         

        4. Solar Street Light Battery Types

        Batteries are the key to cost and supplier quotations. They are the most controversial part of solar streetlights. Most unscrupulous merchants make huge profits by selling low-priced and inferior batteries as substandard ones.

        A-class LiFePO4 Lithium> B-class LiFePO4 Lithium>Ternary Li-ion Lithium> Broken Lithium detached from the electric car(D-class), over 90% of Solar street light manufacturers use broken lithium batteries which are detached from Electricity cars, lifespan less than one year.

         A class solar street light batteryC class solar street light battery

        4. Solar street lights Types and quantities of LED chips

        1. LED chip & LED light efficiency: Different suppliers use different LED lamp beads, and the costs are also different. Take the 3030 chip as an example. For chips of the same size, if the manufacturer is different, the light efficiency, light attenuation, and service life of the chip are greatly different.

        It is recommended to choose suppliers of famous brand chips, such as PHILIPS, CREE, SEOUL, and OSRAM.

        solar street light LED chips

        solar street light LED chips

        2. Number of LEDs: At present, there is a wrong trend of thought: the more lamp beads, the higher the wattage of the lamp. So everyone started counting lamp beads. Adding lamp beads has almost no meaning in improving the brightness (luminous flux) of the lamp.

        Taking Philips 3030 lamp beads as an example, when the driving power is within 0.5~0.7W/unit, the light efficiency of the lamp beads is in the high light efficiency range. Therefore: What determines the illumination of solar streetlights is the actual electrical power, not the number of LED lamp beads.

        solar street light led chips quantities

        solar street light led chip quantities

        When people buy solar street lights, their core focus should be on comparing the luminous flux (LM) of the lights, which is the brightness, rather than the so-called wattage (W)!

        5. Solar street light radiator

        A good quality cooling and heat dissipation device is very necessary for LED light sources. LED modules without radiators will rapidly decay and accelerate aging. The brightness of the lamp will drop rapidly and the service life will be greatly shortened.

        Solar street light radiator

        Solar street light radiator

        6. Solar street light Case material

        1. Material: High-quality solar street lights use aluminum alloy casings, while low-priced street lights use iron or plastic materials.

        all in one solar street light

        2. Screws & Bolts: High-quality solar street lights use 304 stainless steel screws and anti-corrosion bolts; street lights installed on the seaside are equipped with 316 screws.

        solar street light screws and bolts

        solar street light screws and bolts

        3. Appearance & size: For professional solar lighting projects, the focus should be on the rationality and stability of the lamp body structure, rather than the appearance of the lamp; there is no need to be overly obsessed with the appearance or spend too much money on the appearance.

        All in one solar led street light

        When purchasing solar street lights, relative brightness, quality, lifespan, and appearance should always be the last considerations.

        Conclusion:

        Solar street lights systems are project products, usually, a project needs dozens to thousands of sets of solar street lights, if you accidentally choose a low-quality solar street light, you will suffer huge losses, so I recommend customers choose carefully, do not just focus on low-cost products, Investing in a high-quality solar street light may result in long-term cost savings. and I hope that Clodesun summary of choose quality solar street light experience can give you some help.

           

           

          Solar Street Lights Government Project Proposal

          Solar Street Lights Government Project Proposal

          Solar streetlights have grown in popularity as a sustainable and energy-efficient lighting solution for public areas. Along with being environmentally friendly, these lights are safe and cost-effective. So more and more governments decided to adopt solar streetlights on government roads and outdoor car parks of government buildings to improve the safety of the traveling environment at night and reduce operating costs.

          solar street light government project

          Steps to Finish Government Solar Street Light Project

          Step 1: Solar Street Light Project Background Research

          Introduce the basic situation of the project area, including geographical location, climate characteristics, etc.

          Point out the problems that existing street lighting systems may face, such as energy consumption, maintenance costs, etc.

          Step 2: Solar Street Light Requirements Analysis

          List the main requirements of the project, including providing adequate lighting, energy conservation, and environmental protection, reducing maintenance costs, etc.

          Step 3: Solar Street Light Design Plan

          Based on factors such as sunshine coefficient, temperature, road width, length of rainy season, etc., the solution of using solar street lights is proposed.

          Introducing the working principle of solar street lights: energy is collected through solar panels and stored in batteries for night lighting.

          Evaluation of the installation situation

          Photovoltaic street lights mainly rely on sunlight to provide working energy and environmental assessment must be carried out before installation and design.

          1. Sunshine time: greater than 2000H

          2. Ambient temperature: minus 20℃–65℃

          3. Surrounding environment:

          a. Check whether there are trees, buildings, etc. blocking both sides of the road in the installation section (mainly the south side or the east and west sides). If trees or buildings are blocking the lighting, measure its height and distance from the installation site, and calculate Determine whether it affects the lighting of the solar cell module; the general requirement for solar lighting is that the solar lighting can at least ensure that no obstruction affects the lighting between 9:00 am and 3:00 pm.

          b. Observe whether there are cables, wires, or other facilities above the installation location of the solar lamps that may affect the installation of the lamps (Note: It is strictly prohibited to install solar lamps under high-voltage lines);

          c. Understand whether there are cables, optical cables, pipelines, or other facilities that may affect the construction of the solar street light foundation and battery compartment underground and whether there are any signs prohibiting construction, etc. When installing, try to avoid the above facilities. If it is impossible to avoid them, please contact the relevant departments and negotiate and agree before proceeding with construction.

          d. Avoid installation in low-lying, soft soil or areas prone to water accumulation;

          e. Take on-site photos of the installation area;

          f. Measure the width, length, height, and distance of obstructions and other parameters of the road section, record the road direction, and provide photos and other data to the scheme designer for reference.

          Step 4: Solar Street light Technical parameters

          List the key technical parameters of the selected solar street lights, including solar panel efficiency, battery capacity, LED lighting effect, etc.

          1. Light pole: 6000mm special tapered street light pole; please see the drawing for appearance size and color requirements. It is made of hot-dip galvanizing/plastic spraying inside and outside. The surface is rust-proof and anti-corrosion-treated. It is smooth and flat, will not peel for 10 years, and is wind-resistant. Strength: 100 km/h.

          2. Working hours: 12 hours/night, working normally for ≥10 consecutive rainy days.

          3. The length of the street lamp body is 545mm. Please refer to the picture for the lamp head style.

          4. The solar energy is placed on the solar bracket, the controller is installed in the battery module, and the battery module is installed on the solar bracket and under the solar panel. It is portable and easy to install.

          5. The solar bracket is locked on the street light pole with expansion screws.

          6. The solar panels are made of polycrystalline silicon, with a total rated output power of 200W, a service life of ≥15 years, and a warranty period of 5 years; the conversion efficiency is guaranteed to be ≥18.5%, and the power deviation rate is ≤3%; it can withstand snow pressure: 2200Pa, can withstand Wind pressure: 3200Pa.

          ★7. Battery: Use lithium iron phosphate battery, service life ≥5 years, warranty period 5 years, capacity deviation rate ≤5%, temperature range: -20℃–65℃.

          8. LED light source: rated power 36W, using imported high-power LED integrated chips, lamp efficiency ≥135lm/w, service life 50000h, average annual attenuation rate ≤3%, warranty period 5 years.

          9. Controller: (1) Specifications: 24V, 10A, integrated light control and time control; (2) Lifespan ≥5 years, free warranty period of 1 year; (3) The product has under-voltage protection, safety lightning protection, load Short circuit protection, reverse polarity protection, load overcurrent protection, reverse discharge protection, low voltage energy saving protection, charging voltage protection, load startup instantaneous high current protection. (4) Static average power consumption ≦0.05W; (5) -25℃~70℃ high and low-temperature resistance laboratory performance test, which can guarantee long-term normal use at high and low temperatures of -10℃~60℃ at least.

          10. Solar LED lamps Wind resistance : ≥100km/hs, protection level: IP65.

          Step 5: Solar street light government project Design details

          A detailed description of the components and installation methods of solar street lights, including the layout of solar panels, the installation height of lamps, etc.

          1. According to the width of the road and lighting requirements, choose the lighting installation method:

          a. One-sided arrangement

          b. Bilateral staggered arrangement

          c. Bilateral symmetrical arrangement;

          solar street light pole design

          Height of the solar street light pole

          The height of the solar power street light directly affects the illumination range of the LED lamps. The higher the light pole, the wider the illumination range according to the Pythagorean theorem.

          For our palm tree foldable all-in-one solar street light as an example:

          6m pole, pole to pole distance is 22m, with 60W  solar street light
          8-10m pole, pole to pole distance is 30m, with 100W solar street light
          9m-12m pole, pole to pole distance 35m, with 120W solar street light

          palm tree solar street light

          Scenic spots and parks are generally suitable for installing solar power street lights of about 7 meters, At night, the traffic of pedestrians and vehicles on rural roads is not large, so it is generally installed by one-sided interactive lighting, and the installation distance is about 20-25 meters. If it is less than 20 meters, part of the lighting will be affected. In addition, one more street light should be installed at the corner to avoid lighting blind spots.

          Step 6: Economic Analysis

          Analyze the economic benefits of using solar street light solutions, including energy saving, consumption reduction, maintenance cost savings, etc.

          Compare the overall investment and return of traditional electric street lights and solar street lights.

          Step 7: Sustainability and environmental protection

          Emphasize the sustainability and environmental protection advantages of solar street light solutions, reduce carbon emissions, and reduce energy dependence.

          Step 8: Risks and Challenges

          List possible risks and challenges, such as the impact of unstable weather conditions on energy collection, equipment maintenance, and other issues.

          Step 9: Future Outlook

          Looking forward to the future development prospects of solar street lights, combined with the improvements and innovations that may be brought about by technological progress.

          Conclusion

          So far, Clodesun has undertaken the Kenya project and Yemen Solar Stree Lighting Government project of the United Nations Office for Project Services, the Syria project of the United Nations Development Program, the international Cameroon Project, as well as national projects of Benin, Malaysia, Philippines, Thailand, etc.;

          We have accumulated experience in hundreds of domestic and overseas large-scale roadway lighting projects, creating feasible technology space for product innovation and upgrading.

             

             

             

             

             

             

             

            Endurance solar street light

            How to find Reliable Endurance Solar Street Lights

            In recent years, many customers often complain that the solar street lights they bought do not work properly or do not work even in less than six months. Because some suppliers are looking for quick profits in a hurry but do not pay attention to the quality standard of their brand products. A very good quality solar street light can last more than 5-8 years.

            Recently, a Malaysian and Australian customer was sad to talk with me and said that they no longer wanted to sell solar street light systems because the life of the solar street lights they bought never exceeded two years, I sympathize with their experience deeply, the solar street light market is very confusing these years.

            Solar Street Light Failure Project Analysis

            In 2015, for Pakistan’s 40,000 sets of solar street lights project, a Pakistani female senior official personally searched for Chinese factories.

            A good quality factory quoted a minimum price of 1,300 RMB per unit, but the Pakistani female senior officials demanded 900 RMB per unit, the factory refused as the price was not enough to buy the required materials.

            Meanwhile, another factory promised that it could be done for 900 RMB, and even gave the senior woman a “kickback” commission of 200 RMB per unit, leaving the price of solar street light products at only 700 RMB per unit. How was that possible? To cut costs, the supplier used cheap materials of poor quality.

            It turned out, that nearly all 40,000 sets of lamps were broken in less than 6 months. This high-level female official was arrested and has been in jail ever since.

            There is no industry standard, customers are always looking for low prices, and many solar street light factories to make higher profits, can only reduce the price of their products. Configured or with very poor quality materials, customers happily thought they were buying cheap and good products, but in fact, the quality of these solar street lights does not work for half a year or even less than two months, which led to more and more people no longer trust in solar street lights.

             Don’t just look at the solar street light parameters only

            When we buy quality solar streetlights, we must not just look at the specifications advertised by the suppliers. Because the battery that the supplier may advertise is 100Ah, the actual product purchased is only 10Ah. Even with the same capacity, the available capacity of batteries of different grades is different. For the same solar street light, some suppliers label 60W, and some may label 300W.

            The solar street lighting system is very different from the traditional utility city street light, such as in terms of the power of LED lights, You may often see 300W and 500W power solar street light systems in the market, As we all know, a 300W solar street light work 12 hours need power is 3600WH every night, so the power of solar panels needs at least 800W. This is undoubtedly an unreasonable configuration for a solar street road system, especially an all-in-one solar street light.

            Cheap & low-quality solar street lights= Waste of Money

            People want to buy the cheapest products, but the cheap ones do not mean the most cost-effective. It also depends on the effect and longevity. For example:

            With the 10-year lifespan of a $300 high-quality solar light, the average annual cost is $30.

            With the 1 year lifespan of a $100 poor-quality solar light, the average annual cost is $100. If it is broken, it is a waste of time and energy, which is not worth it.

            To get more business, some greedy manufacturers produce low-quality products with shoddy standard parameters, causing a large number of performance issues which lead to many people opting for electric street lights instead of solar street light products.

            Some customers lost faith in Chinese products. They think that Chinese products break easily. Here are some of the “horror stories” I’ve personally known over the years.

             

            8 Tips to Find Reliable Endurance Solar Street Lights

            1: Solar street light Battery life

            A-class LiFePO4 Lithium> B-class LiFePO4 Lithium>Ternary Li-ion Lithium> Broken Lithium detached from the electric car(D-class), over 90% of Solar street light manufacturers use broken lithium batteries which are detached from Electricity cars, lifespan less than one year.

             solar street light battery types

            Solar streetlight battery types

            If you want to buy high-quality solar street lights, Belinda suggests you choose an A-class A-class LiFePO4 battery or a B-class Lifepo4 battery, Although their cost is higher than other batteries, their lifespan will be extended by more than three to five years. if you need to install solar street lights in places where the sun is not particularly sufficient, we can also choose to use a Ternary lithium battery.

            A class solar street light batteryC class solar street light battery

            A plus LiFePo4 battery about 3.9-4.8$/Ah

            A class LiFePo4 battery is about 2.8-3.5$/ah

            C class LiFePo4 Battery is about 1-2$/Ah

            D class LiFePo4 Battery is about 0.5-0.9$/Ah

            The battery capacity directly affects the performance and functionality of solar streetlights. A battery with a larger capacity can power brighter LED lights, cover a wider area, and provide enhanced lighting intensity. This results in improved visibility, increased safety, and better security in the illuminated areas. Consequently, solar street lights with higher battery capacities offer superior performance, but their advanced capabilities contribute to their higher prices

            2: Solar street light Solar panel size

            Solar panel efficiency plays a significant role in the overall performance of a solar street light. Higher efficiency means the solar panels can convert more sunlight into usable energy. When selecting a solar street light, look for high-quality solar panels with good conversion rates to maximize energy generation.

            The wider solar panel size means Large load power, and high capacity, which can increase the solar panel Efficiency, could offer enough power for bearing power, and is the insurance of brightness and longer backup time during cloudy days.

            solar panel led street light size

            solar panel-led street light size

            However, the low-quality solar panel size configuration is less than two and a half times the load power. If the cloudy days exceed more than the expected design requirements, the LED light would not work.

            Solar Panel Capacity: Assess the solar panel capacity accurately. Higher solar panel capacity means more energy can be captured and converted into usable power. This directly impacts the charging capabilities and overall performance of the lights, especially during low sunlight conditions.

            SOLAR PANEL STREET LIGHT

            mono solar pv VSpoly solar pv

            mono solar pv VSpoly solar pv

            3: Solar street light LED Chip Lumen

            The brightness and light output of a solar street light are essential considerations. It is crucial to determine the required brightness level based on the intended usage. Common units of measurement for light output include lumens and lux. Understanding these measurements will help you select a solar street light with adequate illumination.

            210lm/w: Brightness decayed in 5 years and more than 80% brightness remained.

            110lm/w: Brightness decayed in 2-3 years and about 20% brightness remained.

            solar led street light

            Lumen Output: Look beyond the wattage! The lumen output directly determines the brightness and effectiveness of the lighting solution. Don’t be misled by inflated numbers. Ask for verified lumen output data to ensure you get the desired illumination for your project.

            cree LED LIGHT

            Cree LED LIGHT

            4: Solar street light Solar panel size Case and Bracket Material

            Quality solar street lights use a customized die-casting aluminum mold, The advantages of die-casting aluminum mold are lightweight, strong corrosion-resistant, and anti-rust. Making it able to resist a strong wind load of up to 130MPH, stainless steel screws are used as fasteners to protect against any harsh weather. The die-casting aluminum mold is elegant and characteristic.

            Solar streetlights are exposed to various weather conditions throughout the year. Therefore, it is crucial to choose lights with sturdy construction and weatherproof features. Look for lights made from durable materials that can withstand harsh weather elements such as rain, snow, or extreme temperatures.

            Lower quality solar street lights just use mold and rough craft, the installing structure needs support by Knighthead, to recover the structure strength issue, making installation more complex, lack of stability, and not anti-strong wind.

             solar street light Bracket Material

            Bracket Material

            5: The Solar street light Motion sensor type

            The sensors are of two types:

            • Microwave induction ( can sense moving objects)
            • Infrared induction (detect only temperature-bearing organisms)

            The PIR or the Passive Infrared Sensor is included in many solar streetlights to help conserve energy. The sensors work by measuring infrared light allowing the sensor to detect movement.

            solar street light with motion sensor

            6: Whether heat Dissipation between solar panels and light

            In summer, the solar panel is as hot as 90°C, and 80°C inside the solar lamp body. (We have tested ), The maximum temperature of solar panels in summer can reach 90 degrees Celsius.

            Solar street light temperature

            Hot will damage the battery and LED source, so we separate the hot solar panel and it has a shadow, makes solar street light cool, and enlarges the lifespan of the battery and LED source.

            The charging and discharging environment temperature of the LiFePO4 lithium battery is up to 65 degrees Celsius.
            The charging and discharging environment temperature of the Ternary Li-ion lithium battery is up to 50 degrees Celsius.

            Solar led street light battery temperature

            Solar-led street light battery temperature

            7: Whether Solar street light Solar panel size  solar panels can adjust

            Different countries and regions have different geographic locations and latitudes. When people install solar street lights someplace, on one side, the solar panel can face the sun directly, but on the other side, the solar panel can not face the sun, so if the solar panel can be adjustable, it will absorb more solar energy, which can maximize the conversion of solar energy while the lower quality solar led street light panel is fixed, causing low conversion rate of solar and the using areas are also limited.

            Because the maximum temperature of solar panels in summer can reach 90 degrees Celsius. Therefore, if you are in a hot area, such as
            Africa: Algeria, South Africa, Angola, Morocco, Rwanda, Liberia, Ghana, Mauritius, Equatorial Guinea, Botswana, Gabon, Namibia, Tunisia, Cameroon, Nigeria
            Middle East: Saudi Arabia, Kuwait, Israel, UAE, Oman, Qatar
            Southeast Asia: Malaysia, Philippines
            South America: Chile Mexico
            You can only use LiFePO4 lithium batteries. Ternary batteries are easy to catch fire. The heat dissipation performance of the lamp must be good, and the solar panel should not be in direct contact with the battery.

            If you are at a latitude greater than 15 degrees, the sun will have an inclination angle greater than 15 degrees with the ground. Try to consider solar street lights with adjustable solar panel angles. Solar streetlights installed on both sides of the road should not have solar panels facing away from the situation of sunlight.

            solar street lamps panel fold

            solar street lamps panel fold

            adjust solar panel street light

            Adjust solar panel street light

            8. Solar street light warranty

            Warranty is also crucial because solar streetlights are electronic products and may have malfunction experience. There is No Solar Street Light Manufacturer that can guarantee that their solar street lights will never experience any faults during their usage.

            Solar street lights usually come with a 3-year warranty, and some manufacturers provide them with a 5-year warranty, of course, the 5-year warranty price is higher than 3 years.

            Conclusion:

            Solar street lights systems are project products, usually, a project needs dozens to thousands of sets of solar street lights, if you accidentally choose a low-quality solar street light, you will suffer huge losses, so I recommend customers choose carefully, do not just focus on low-cost products, Investing in a high-quality solar street light may result in long-term cost savings. and I hope that my summary of choose quality solar street light experience can give you some help.

              Endurance Solar Street Lights

              Why do solar street light batteries need to be buried underground?

              Solar street lights are loved by people because of their advantages of energy saving, environmental protection, durability, low maintenance costs, cleanliness, and no pollution, and have become the main application of outdoor lighting in rural areas.

              solar street light batteries

              The Lifespan of solar street lights is 4 or 5 years, but the battery is relatively easy to break. Generally speaking, the batteries of solar street lights are buried underground, but do you know the reason why the batteries of solar street lights are buried underground? Let me take you through the analysis below:

              1. Anti-theft

              The battery is an important part of the solar street light, and the price is also relatively expensive, naturally, it will be targeted by some criminals. Therefore, the battery must be buried deep in the ground, and can not be buried too shallow, otherwise it will provide a convenient way for thieves.

               

              2. Prevent water from entering the battery

              Batteries are afraid of water intrusion, and storage batteries are no exception. Although the outer layer of the battery has waterproof measures, to achieve a better waterproof effect, it needs to be covered with cement around it. Some constructions also use waterproof battery boxes. for waterproofing.

              3. Antifreeze

              Batteries can generally be used normally at minus 30°C to 60°C, but in extremely cold environments, the battery’s endurance will be reduced, and in rare cases, it will stop working.

              Therefore, if you want to install solar street lights in the colder north, it is still necessary to bury the battery more than 2 meters deep to maintain a certain temperature.

              Nowadays, some solar street light batteries generally use gel batteries, which are larger in size and weight and cannot be installed on lamp holders or poles, so they can only be buried underground.

              Bonus: ClodeSun Solar

              ClodeSun (CLODE Optoelectric Co., Ltd.) was established in 2013. Headquartered in Shenzhen, it is a high-tech enterprise in China. But ClodeSun sells a lot of products in Europe.

              Clodesun launched a foldable all-in-one solar street light in 2022, which was designed by our German team for more than 1 year and tested for 2 years. This light stands out among various integrated solar streetlights. It is widely praised by customers all over the world.

                Solar street light waterproof IP65

                Solar Street Light with IP65 Waterproof

                What is Solar Street Light IP65 Waterproof

                IP (International Protection) level is the protection of the product shell against dust and water as stipulated by the International Electrotechnical Commission (IEC). Many outdoor products need to pass the waterproof test, and for electrical products,  there may be a short circuit, leakage, decay, interference with signals and so on if the IP lever is not good.

                IP54 is the protection level of outdoor ordinary lamps and lanterns, with basic protection against dust and water spray. Generally, the light source and electrical appliances of this type of lamps and lanterns are not used in buried or submerged environments, such as garden lamps, lawn lamps, road lamps, etc. IP54 standard can be used. General outdoor lamps and lanterns Like solar street lamps with IP65 or higher IP67 or IP68 are dustproof and waterproof better and can be used directly in the underwater environment.

                Waterproofing an LED Solar Street Light consists of making all parts resistant to water: the controller, solar panel, and the luminaire.

                The solar panel converts solar energy into electrical energy throughout the day, the controller manages this process and the battery powers the streetlights with electricity at night. The solar panel converts solar energy into electrical energy throughout the day, the controller manages this process and the battery powers the streetlights with electricity at night. Waterproofing the LED street lamp luminaire is also crucial. The stability and safety of the LED street lamp lighting at night can only be ensured by effectively waterproofing the LED street lamp luminaire. The stability and safety of the LED street lamp lighting at night can only be ensured by effectively waterproofing the luminaire.

                How to make Solar Street Light pass IP65 waterproof Level

                1. Lamp design: The lamps of solar street lights need a waterproof design, such as choosing a special sealing structure, waterproof joints waterproof switches, etc., to ensure that rainwater will not penetrate the interior of the lamps.

                2. Circuit protection: The circuit of the solar street light needs to be protected, such as choosing waterproof and moisture-proof circuit boards and electrical components to ensure that the circuit will not be short-circuited or damaged by rain.

                3. Installation location: solar streetlights need to be installed in a suitable location to avoid being affected by heavy rain or flooding. For example, components such as solar panels and circuit boards should be installed at a higher position from the ground, and sturdy and stable mounting brackets should also be selected.

                4. Maintenance: Regular maintenance, such as cleaning, checking circuit components, replacing damaged parts, etc., to ensure that the waterproof performance of solar street lights will not be affected.

                5. In short, by comprehensively adopting the above measures, the waterproof performance of solar street light can be effectively improved to reach the waterproof grade of IP65, to ensure the normal work and service life of the street light under adverse weather conditions.

                To improve the waterproof treatment of the solar street light controller, most of the controller is installed in the lampshade, and the battery box, generally will not get into the water, but in the actual case of the project will be some, such as improper installation or the controller’s circuit board did not do the three anti-painting treatment, which led to the rain will be along the controller’s terminals outside the wiring flows into the solar street light controller, which in turn caused the emergence of a short-circuit situation.

                Conclusion

                Clodesun’s solar lights are water-proof IP68. For those of you who are worried about how well solar streetlights perform in bad weather, have no fear! Solar streetlights are designed to withstand wet seasons and winters.

                Bonus: ClodeSun Solar

                ClodeSun (CLODE Optoelectric Co., Ltd.) was established in 2013. Headquartered in Shenzhen, it is a high-tech enterprise in China. But ClodeSun sells a lot of products in Europe.

                Clodesun launched a foldable all-in-one solar street light in 2022, which was designed by our German team for more than 1 year and tested for 2 years. This light stands out among various integrated solar streetlights. It is widely praised by customers all over the world.

                   

                   

                  200w solar street light

                  What is the Price of 200w Solar Street Light

                  Solar streetlight prices are influenced by many factors. solar street lights with poles and batteries are the 2 most important factors in understanding the pricing. When you are looking for 200w solar street lights, consider the aspects talked about during the article, which will help you choose a suitable, high-quality solar street light to avoid losses.

                  How much of 200w Solar Street Light

                  1. The number of lamp beads is not equal to a 200w solar lamp.

                  There are dozens or hundreds of 200W lamp beads, so the number of lamp beads above has nothing to do with the power. A professional explanation is that the lamp beads commonly used in solar lamps range from 0.01W/piece to 5W/piece, and there are even integrated lamp beads of 10-30W/piece. Different lamp beads produce specific power and use different quantities. Lamp beads with different powers have different prices, so the more lamp beads, the better or brighter it is.

                  2. The power of 200W is a virtual standard.

                  Simply calculate the power consumption of a 200W lamp and compare it with the power generated by the solar panel to see if the daily power generated is enough for the daily power consumption. The derivation of the solar street light formula comes from: the solar panel’s power generation for the day = the lamp head’s electricity consumption for the day, so if a slightly more professional manufacturer configures the system, it will follow this principle. Normal solar street lights will not work at rated power all night but will operate at reduced power. We set their full power working time to 5 hours/night.

                  Calculate the power consumption of 200W lamp: 200W*5H=1000WH

                  Daily power generation of solar panels = wattage * peak sunshine hours on that day (calculated according to 3 in most areas of the country) * 0.75

                  Small solar integrated light: 8W*3H*0.75=18WH

                  Solar floodlight: 24W*3H*0.75=54WH

                  Large solar integrated light: 88W*3H*0.75=198WH

                  Obviously, none of the power generation capacity is enough to meet the electricity consumption that day, so they are all false standards.

                  Conversely, we can also estimate the actual power of these lamps: daily power generation/5 hours of full power operation.

                  Small solar integrated light: 18WH/5H=3.6W

                  Solar floodlight: 54WH/5H=10.8W

                  Large solar integrated light: 198WH/5H=39.6W

                  3. How to calculate the actual power of solar panels

                  The boards currently on the market, including losses, are roughly: polycrystalline 150W per square meter, and monocrystalline 1square meter 165W. Of course, if more efficient cells are used, or the overall efficiency of the cells is improved later, the power per square meter will increase accordingly. However, due to cost constraints, solar streetlights cannot use such good cells. On the contrary, cheap lights will only use worse cells. In other words, 150W/165W per square meter is calculated as the larger one for boards with a power lower than 50W.

                  Small integrated lamp: 0.38*0.17*150W=9.69, the standard 8W is enough

                  You can calculate it according to this method, and you can see that the power of some boards is also imaginary.

                  4. Lithium battery capacity comparison

                  First, look at its nominal specifications, some are marked mA, some are marked mAH, and some are marked AH. First, let’s learn about the units of lithium battery capacity. There are only two units of battery capacity, mAH and AH. The conversion relationship between the two is: 1000mAH=1AH.

                  Some of the specifications are not clearly marked, and the editor thinks they can be eliminated directly. They do not even respect the minimum consumer’s right to know. Either he is a middleman and does not know the specifications at all, or he deliberately conceals it, and his integrity is questionable.

                  Comparison of different voltages of lithium batteries: multiply the capacity and battery voltage to get the battery storage capacity and then compare

                  For example, compared with 36000 mAH and 54AH 12.8V, which battery is larger?

                  If the battery voltage is not marked, it can be calculated as 3.2V.

                  36000 mAH=36AH *3.2V =115.2WH

                  54AH * 12.8V = 691.2WH

                  691.2/115.2=6, it can be seen that the difference between the two batteries is 6 times.

                  To see if the battery configuration is reasonable, you can simply use the following calculation to see:

                  Lithium battery storage power/street light power consumption for the day (actual street light power * full power working time) ≥ 2

                  Personally, I feel that the discharge depth of the lithium battery should be less than or equal to 50% to ensure the life of the lithium battery.

                  Let’s choose one from the above and calculate it:

                  Small integrated lamp: the actual power of the lamp is about 3.6W, the full power working time is about 5 hours every night, the lithium battery is 8000mAH 3.2V

                  That is: 8*3.2=25.6

                  25.6/(3.6*5)=1.42

                  Therefore, from the data we deduced, this battery is a bit on the small side.

                   How to choose the right 200w solar street light?

                  1. Budget.
                  For an ordinary small yard at home, Clodesun recommends a price range of 30-80 US dollars. The light source power can basically reach more than 10W, and the brightness is enough. Choose several models within this range, make a list of configurations, and compare them. For the same price, choose one with larger configurations. Of course, the final price still depends on your budget.

                  2. Configuration.
                  At the same price, choose one with a larger configuration. Another principle is that in areas with good sunshine, choose larger batteries, and in areas with poor sunshine, choose larger solar panels.

                  3. Pay attention to the manufacturer’s warranty.
                  At present, the warranty on the market generally ranges from 1 to 3 years. Ask clearly about the warranty policy. If the lamp is broken, how will the manufacturer repair it? Should it send a new one directly or send the old one back for repair? How will the shipping cost be calculated?

                  4. Try to buy from manufacturers.
                  If you pay attention to quality, you need high-quality, long-lasting (8-10 year lifespan) solar street lights.

                  Bonus: ClodeSun Solar

                  ClodeSun (CLODE Optoelectric Co., Ltd.) was established in 2013. Headquartered in Shenzhen, it is a high-tech enterprise in China. But ClodeSun sells a lot of products in Europe.

                  Clodesun launched a foldable all-in-one solar street light in 2022, which was designed by our German team for more than 1 year and tested for 2 years. This light stands out among various integrated solar streetlights. It is widely praised by customers all over the world.