Could you mind me asking you a few questions?

Do you dare to use the 0.2 USD/piece mask?

Do you dare to eat $0.8/kg beef?

Or will you use the $300/piece iPhone 13 Pro？

In fact, your answer should be no, but why do very cheap solar street lights dare to use them? Just because a few examples above maybe threaten your life. But the quality of solar street lights is not a threat to the safety of your life but it will threaten your reputation and the honor of your business, Maybe you can understand what I said.

I have been working in the solar street light industry for many years, the most frequently asked question is, How much do solar street lights cost? But before we answer that question, let’s break down first some of the major factors influencing solar street light prices.

There are 2 Major factors affecting solar street lights prices

Battery and poles are the main factors that affect the solar street light budget cost. If you are looking to buy a cost-effective solar street light, this article will guide you with some valuable information about batteries and light poles, and their prices.

Solar  street light battery price

How Many Types of Solar street light Batteries?

Generally, There are 3 types of batteries used in solar street lights.

1)lead-acid battery: 1,200 cycles, 2 years life large size and weight. 12v

2) Lithium-Ion Battery: 2,000-3,000 cycles, 3-5years life and compact size 11.1v

3) lithium iron phosphate battery (LiFePo4) : 4000-4,500 cycles.8-10 years life compact size, 12.8v

solar street light battery types dischargers

Lighting hours and the capacity of the battery

Lead-Acid battery about (1.2$/Ah-2$/Ah)

Lead-Acid batteries became the norm for many years since they are robust and cheap. They include a cathode made out of lead oxide, and a metallic lead anode, both immersed in a sulphuric acid electrolyte. While they are cheap, lead-acid batteries might require regular maintenance, which is why we do not recommend them for underground installations on solar street lights. AGM and Gel batteries are the most commonly used Lead-Acid batteries for solar street lights.

Lithium-Ion battery about （1.8$/Ah-2.2$/Ah)

Lithium-Ion (Li-Ion) batteries are among the most popular batteries for solar street lights, but also the most expensive ones. They use a lithium metal oxide cathode and a lithium-carbon anode, immersed in a lithium salt electrolyte. Li-Ion batteries are widely popular due to their higher energy density, resulting in a higher capacity with a compact design.

Lithium Iron Phosphate battery about (0.5$/Ah-4$/Ah)

even LiFePo4 batteries have many types, have 0.5/Ah,0.8$/Ah, 1.5$/Ah, 2.7$/Ah,3$/Ah, and 4$/Ah, you will get what you pay for.

Lithium Iron Phosphate (LiFePO4) batteries are another great lithium battery technology, but for a lower price. LiFePO4 batteries are manufactured with graphite anodes and lithium iron phosphate cathodes, immersed in a lithium salt electrolyte. This is the preferred lithium technology for solar street lights since it is cheaper than Li-Ion but still provides a maintenance-free option with high energy density. Relate article:2022 Best Battery for Solar Street Light

Which solar street light battery type is the best?

While knowing about the different aspects to consider when choosing a battery. Nowadays, Solar Street Lights batteries prefer to use Lithium Iron Phosphate batteries (LiFePO4) and good quality batteries compared to Lithium-ion batteries. Lithium Iron batteries can be cyclically charged and discharged more than 2000 times, with long life, high safety performance, and strong resistance to low and high temperatures. On the basis of our selection of lithium batteries, the use of intelligent balancing technology and intelligent dual protection technology to make the battery life longer. But there are currently 4 grades of LiFePo4 batteries on the market, A-class LiFePo4 battery, B-class LiFePo4 battery, li-ion battery, and D-class LifePo4 battery(Already eliminated used LifePo4 battery).

1.A- class LifePo4 batteries(about 4$/AH 8-10 years life span)

A- class LifePo4 battery refers to the battery capacity, thickness, length, width, and other parameters. The battery manufactured in accordance with the standard is called A class, the solar street light life span can last 8-10 years.

2. B- class LifePo4 batteries. (about 2.7$/Ah-3$/Ah 5-8 years lie span)

refers to a slight gap in battery capacity, or the length, width and thickness do not meet the order requirements, and the price is cheaper than product A. In addition, product A is generally placed in the warehouse. If it has not been shipped for 3-6 months, it is also called B class, the solar street light life span can last 5-8 years.

3. C- class LifePo4 batteries.(1$/Ah-1.5$/AH 1-3 years life span)

C-class LifePo4 batteries are indeed saying that the battery of product B has been placed in the warehouse for more than 8 months. If it has not been shipped, it can be called product C. The battery of product C is due to the long storage time. With the self-discharge and dust, water For the aging of gas, the performance of the C-type cell is generally only about 50-60% of the A-type cell of the same model. The safety of the C-type battery is poor. In addition, the C-type battery is not durable. After several cycles of charging, the performance is greatly reduced. the solar street light life span can last 1-3 years.

4. D-class LifePo4 battery(0.5$/Ah-0,8$/Ah 0.6 months-1year life span)

D-class LifePo4 battery(Already eliminated Or have been used LifePo4 battery also called a second-hand battery), Capacity, pressure drop, internal resistance, circulation, and other performance are in a very low and unstable state, not only can not meet the assembly requirements, but its service life is usually 6-8 months, you need to replace the battery, which is also the most popular Battery on the market. the solar street light life span can last 0.6-1 year.

And where did these eliminated LifePo4 batteries go? For what use? It is understood that many eliminated LifePo4 batteries have just flowed into the solar street light industry, Unfortunately, more than 90% of solar street light manufacturers on the market now use this LifePo4 battery that has been eliminated which causes another disadvantage to the solar street light market that already lacks standards. The industry is more uneven, and the gap between prices and quality is greater.

Solar street light pole price

How many types of Solar street light poles?

Solar street light pole type materials are different, there are galvanized, aluminum, straight square steel, round poles, tapered poles, ornamental poles, synthetic composite fiberglass, or concrete poles/posts. If you are looking for the best anti-rust pole, a hot-dip galvanizing pole is the best option. The product claims that it will not rust in 8-10 years. Among other pole types, a hot-dip galvanizing pole is the most expensive. Another option is the cold-dip galvanizing pole with an average anti-rust effect lasting 2-3 years. When buying a solar street light pole, we also need to consider its hurricane-resistant poles – solar lighting poles need very sturdy that they can withstand wind speeds of up to 175 miles per hour. This ensures that solar street lighting systems will still be up and running after the storm has passed; offering safety and security when you need it most.

Which solar street light pole type is the best?

Among the three solar street light poles mentioned above, we recommend that customers choose hot-dip galvanized light poles. Although the price is more expensive, it has a good anti-rust effect, Hurricane resistance, and will last longer. There is a kind of galvanized pipe paint, which usually rusts in half a year to a year. Just be careful in purchasing as many cold galvanizing on the market are now pretending to be hot galvanized.

How much does a solar street light pole cost?

Solar street light comes with a wide variety of pole sizes which affects the cost. Below are some of the types of pole height designs for solar street lights design:

3m-4m about (15$/m-20$/m) hot-dip galvanized light Cone straight poles price is about（45$-80$), The thickness of lamp pole is 2.5mm, pole to pole distance is 15-20m, with a 30w-40w solar street light.

5m-6m about (15$/m-20$/m) hot-dip galvanized light Cone straight poles price is about (75$-120$), The thickness of lamp pole is 2.75mm pole to pole distance is 20-25m, with 50w-60w solar street light.

7m-8m about (17$/m-22$/m)hot-dip galvanized light Cone straight poles price is about (119$-176$), The thickness of lamp pole is 3mm, pole to pole distance is 25-30m, with an 80w-100W solar street light.

9m-12m about (19$/m-25$/m)hot-dip galvanized light Cone straight poles price is about (171$-300$), The thickness of lamp pole is 3.25mm, pole to pole distance 30-35m, with a 120W-150w solar street light.

Other factors that affect the solar street light price

Solar street light LED Chip price

210LM/W(about 0.8$/W): Brightness decayed in 5 years, and more than 80% brightness remained.

110LM/W(about 0.5$/w): Brightness decayed in 2-3 years, and about 20% brightness remained.

 

Solar street light controllers’ price

There are 2 types of controllers: PWM(about 8$/piece-15$/piece) and MPPT(about 16$-32$/piece) in the market.

All in one solar led street lights to adopt a smart MPPT controller, for, in this case, PWM will waste some energy collected by panels, while MPPT can convert all the solar energy collected into chemical energy and this smart MPPT improves battery life and provided the efficient service throughout the whole year.

Compared to our smart MPPT controller to PWM controller, the whole solar street light efficiency increased by about 30%.

Solar street light solar panel price

There are 3 types of solar panels used in solar street light

High-efficiency Monocrystalline Double-sided Solar Panel (about 0.4$/W)

High-efficiency Monocrystalline（about 0.33$/W-0.37$/W)

High-efficiency Polycrystalline(about 0.30$/W-0.32$/W)

Why do we choose a Monocrystalline solar panel or High-efficiency Monocrystalline Double-sided Solar Panel? By selecting a monocrystalline solar module, Solar-led street Lighting International knows it will produce more energy, work better in high temperatures, and last longer than a polycrystalline panel.

Solar street light Case and Bracket Material price 

Quality solar street lights Case and Bracket Material(about 60$-100$) use a customized die-casting aluminum mold due to its abundant benefits. The major advantages of die-casting aluminum mold are lightweight, strong, corrosion-resistant, and anti-rust. With its solid and firm materials, it can withstand a strong wind load of up to 130 MPH. It is also equipped with stainless steel screws that are used as fasteners to protect against any harsh weather conditions. Aside from that, the die-casting aluminum mold looks elegant and classy.

On the contrary, lower-quality solar street lights Case and Bracket Materials(about30$-40$) just use mold and rough craft. Usually, the installation requires the support of the knighthead, to recover the structure strength issue, making the installation more complex. It also lacks stability and cannot withstand strong wind.

Conclusion

Solar street light costs are highly influenced by several factors. Therefore, you should take note of these factors to understand the pricing. Compared to conventional street lights, solar street lights are essentially more cost-effective, energy-saving, and environmentally friendly. While the upfront cost of solar street lights is more expensive than the cost of traditional street lights,

Solar street light prices are influenced by many factors. solar street lights with poles and batteries are the 2 most important factors to understand the pricing. When you are looking for a battery and pole for solar street light, 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 to Europe.

Clodesun launched a foldable design all in one solar street light in 2021, which are designed by our German team for more than 1 year and tested for 2 years. This light stands out among various integrated solar street lights. It is widely praised by customers all over the world.

 

A solar street light project proposal is a key factor that influenced the success of the project, which is rather apparent, Before starting a solar street light project, there are 5 factors that you need to consider in advance, such as the installation site, installation location, local environmental factors, latitude, lighting conditions, dust, corrosion, typhoon, and so on, following are the 5 main factors that need to consider in a Solar Street Light Project Proposal.

Solar street light installation location

Solar street lights can be installed in a wide range of locations, For example, Airport, Highway and roadway lighting, Park and Playground lighting, village roads, etc.

So we need to consider the amount of traffic or activity in the area that needs illumination. For example, if solar street lights are installed on highways or airports, the traffic of people and vehicles is very busy and the lighting illuminations are relatively high. For example, especially on the highway, the client usually requires 100% 12 hours at night and last 3-4 rainy days. Conventional solar street lights can not meet the lighting requirements. then we need to consider enlarging the size of the solar panel and the capacity of the battery, another method is to increase the capacity of the solar street light battery and reduce the power of the LED.

When solar street lights are installed in parks and village roads, the traffic of people is not very busy, and the illumination requirements are not high. The government can consider using conventional solar street lights at this time in order to save costs and energy.

Therefore, a complete analysis of the Solar street light installation location and traffic pattern to determine the peak and off-peak hours and illuminations. This information will help you look for the best option to make a Project Proposal.

The panel must not get any shadow including the pole.

Trees or buildings do not exceed lamps too high in case of shadows on the solar panels， Nowadays, our country pays more attention to greening projects, leading to many solar streetlight projects that will follow greening projects. However, in summer thunderstorms, the trees near the solar streetlights are easily blown down by strong winds, destroyed, or directly damaged. Therefore, the trees around the solar streetlight should be pruned regularly, especially in the case of the wild growth of plants in summer. Ensuring the stable growth of trees can reduce the damage to solar streetlights caused by dumping trees.

Since Solar street lights depend on the energy from sunlight, the amount of shade in the area is essential in a solar street light project proposal.

Shading like (cloud cover, tree cover, and roof cover) and any obstruction will block the sunlight required to produce electricity for your solar street light. present in the area that you want to illuminate.

So when we make a Solar Street Light Project Proposal we need To ensure that the panel does not get any shadow from any object including the pole, and install the solar street lights under the tree with the solar system remotely mounted on a sunny area nearby or install the street lights with poles taller than the trees.

Sunlight conditions and latitude of the installation area

Before the solar street light project proposal, we need to know the weather and geographic latitude of the region. Solar street lights are suitable for installation in enough sunlight places, like Africa, the Middle East, and Southeast Asian countries, but not suitable install in such as Canada, Russia, etc., because Canada and Russia have long winters, the temperature is very low, and snows often.

However, when installing street lights in places with high temperatures, we need to consider the impact of high temperatures on the efficiency of solar panels. Because the temperature is too high will cause the opposite effect on the production of solar panels and prematurely damage solar cells.

Solar street lights are also suitable for installation in high latitudes, but when installed in high latitudes, in order to make the solar panels face the sun to absorb more solar energy, we can use foldable design solar street lights. The foldable design of solar street lights can improve solar panel conversion efficiency by 10%-20%.

So solar street light project proposal should take into account the local sunlight lighting conditions and the latitude of the install area.

Local government regulations and restrictions

Some countries and regions are very strict with solar street light installation, especially in coastal countries, they have particularly high requirements for the anti-corrosion and typhoon resistance of solar street lights installed, such as in the Philippines, Malaysia, etc., and some countries have particularly serious local sandstorms. Like Saudi Arabia, Qatar, and the Middle East countries,  these country government requires that solar street lights need to have an automatic cleaning function system, which can help clean the sand and dust on the solar panel.

Therefore, the installation’s high requirements for pole height or wind load should also be met before making a solar street light project proposal. These requirements will help you determine the type of material and the design of the solar lighting system.

The solar street light Illumination level

Before we make a solar street light project Proposal, we need to ask one question? Could you kindly tell me the width of the road or the height of the pole? We can supply the 3D Dialux simulation photometric according to your information,

Brightness levels must include in a solar street light project proposal. Lighting Illumination levels require the determination of parameters such as the road width, pole height, pole position (center, both sides,s or on one-sided), pole and pole distance, module angle, and arm length.

After determining lumens, we also need to eliminate glare, light pollution, uneven light patterns, and wasted energy.

So before we make a good solar street light project proposal, we need to confirm the solar street light illumination level which can Guide how to install solar street lights and can also simulate the effect of solar street lights after installed

Conclusion

Before the solar street light project proposal, if the above five factors can be considered, not only can the installation cost be saved, but if the solar street light project is successfully installed, many people will benefit from it.

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 to Europe.

Clodesun launched a foldable design all in one solar street light in 2021, which are designed by our German team for more than 1 year and tested for 2 years. This light stands out among various integrated solar street lights. It is widely praised by customers all over the world.

As we know, The battery is the most key component of the solar-powered street lights system, and also a major component of the solar-powered street lights system cost, There are several types of battery used in solar street lights, as the ternary battery, Lead-acid, Lithium battery and so on. LiFePO4 Lithium-ion battery is the highest cost-efficiency in the market for now. But why do we recommend lithium batteries for solar street lights?

Six reasons for choosing lithium batteries

 high voltage

The lithium battery has high voltage. The average voltage of a single cell can reach 3.7V or 3.2V. It is relatively equal to the series voltage of 2-4 nickel-metal hydride batteries or nickel battery cells.

 long life span

The life of the lithium battery is very long. The service life of a lithium battery can be used for more than 6 years and up to 9 years if there is no accident. The normal use frequency is over 1500 times. If there is no accident, the number of users can reach more than 2000 times. The charge and discharge times of LiFePO4 Lithium battery are 2000 times, but Li-ion Lithium battery is only 800 times. The lifespan of LiFePO4 is 2. 5 times that Li-ion and 5-7 times that lead-acid batteries

Lightweight

The volume of the lithium battery of the same specification capacity is 2/3 of the volume of the lead-acid battery, the weight is 1/3 of the lead-acid battery, and the second energy density is several times that of the lead-acid battery.

High-temperature resistance

The electric heating peak value of lithium battery can reach 350℃-500℃ while lithium manganate and lithium cobaltate are only around 200℃. Wide operating temperature range (-20C–+75C), Very suitable for countries and regions with high temperatures and sunny, such as Africa, and Southeast Asia.

 Low self-discharge and no memory effect.

In the production of lithium batteries, adding a protective plate to the lithium battery body can make the lithium battery have an overcharge and over-discharge effect. The lithium battery itself has high power endurance.

 Lithium batteries are environmentally friendly

 Lithium batteries do not contain toxic substances such as lead, mercury, and cadmium.

There are 4 types of batteries used in solar street light

1)SMF battery: 1-year life bulk in size 12v

2)lead-acid battery: 1year life large size and weight.12v

3) Lithium-Ion Battery: 3-5years life and compact size 11.1v

4) lithium iron phosphate battery (LiFePo4) : 8-10 years life compact size, 12.8v

In summary, the above is the advantage of using lithium batteries for solar street lamps. Lithium batteries can be cyclically charged and discharged more than 1500 times, with long life, high safety performance, and strong resistance to low and high temperatures. On the basis of our selection of lithium batteries, the use of intelligent balancing technology and intelligent dual protection technology to make the battery life longer.

Nowadays, All in One Integrated Solar Street Lights battery uses Lithium Iron Phosphate Battery (LiEePO4) and good quality battery compare to Lithium-ion Battery.

With the problem of the service life of new energy vehicle batteries, many LifePo4 batteries have been eliminated. Under the conditions of non-standard national policies and regulations and the immature use of echelon utilization technology, many manufacturers have to deal with these batteries at a low price, even by tons. Sale, so the price is extremely low, and some costs may vary from 1/5-1/10 of the normal battery.

There are currently 4 grades of LiFePo4 batteries on the market, A-class LiFePo4 battery, B-class LiFePo4 battery, li-ion battery, and D-class LifePo4 battery(Already eliminated Or have been used LifePo4 battery).

So where did these eliminated LifePo4 batteries go? For what use? It is understood that many eliminated LifePo4 batteries have just flowed into the solar street light industry, Unfortunately, more than 90% of solar street light manufacturers on the market now use this LifePo4 battery that has been eliminated which causes another disadvantage to the solar street light market that already lacks standards. The industry is more uneven, and the gap between prices and quality is greater.

 How do we distinguish these 4 types of LifePo4 batteries?

The internal resistance and voltage of the battery cells are very different, so the consistency between the batteries will be much worse, such products will have a greater hidden danger after serial and parallel connection.

Therefore, the capacity, voltage drop, internal resistance, circulation, and other performance of the eliminated cell are extremely low and unstable, which not only does not meet the assembly requirements but even if it is used for single use, its capacity attenuation and power-down rate are extremely low. Stable, the user experience must be extremely bad,

A- class LifePo4 batteries.

 A- class LifePo4 battery refers to the battery capacity, thickness, length, width, and other parameters. The battery manufactured in accordance with the standard is called A class2. B- class LifePo4 batteries.

 B- class LifePo4 batteries.

refers to a slight gap in battery capacity, or the length, width and thickness do not meet the order requirements, and the price is cheaper than product A. In addition, product A is generally placed in the warehouse. If it has not been shipped for 3-6 months, it is also B class

C- class LifePo4 batteries.

C-class LifePo4 batteries are indeed saying that the battery of product B has been placed in the warehouse for more than 8 months. If it has not been shipped, it can be called product C. The battery of product C is due to the long storage time. With the self-discharge and dust, water For the aging of gas, the performance of the C-type cell is generally only about 50-60% of the A-type cell of the same model. The safety of the C-type battery is poor. In addition, the C-type battery is not durable. After several cycles of charging, the performance is greatly reduced.

D-class LifePo4 battery

D-class LifePo4 battery(Already eliminated Or have been used LifePo4 battery), Capacity, pressure drop, internal resistance, circulation, and other performance are in a very low and unstable state, not only can not meet the assembly requirements, but its service life is usually 6-8 months, you need to replace the battery, which is also the most on the market. Battery.

Nowadays more than 90% of solar street light manufacturers use C-class and D-class LifePo4 batteries. After several months of use, there is no problem. After half a year, there are a series of problems such as lithium battery damage and the light source not being bright.

Summary:

If you have requirements on the life and quality of solar street lights, the batteries eliminated are not recommended for use in solar street lights. If you have no requirements for the product, Belinda still recommends that regardless of the manufacturer, engineering company, or even government departments, you should choose high-quality products to serve the public, and be responsible for products, users, and society.

There is an increasing demand for Solar Street lights these years, The all-in-one solar LED street light because of its stable performance, easy management, and no need for an electricity connection, is becoming more and more popular. Solar LED street lamps are used in residential, Rural roads, communities, squares, and parking lots from remote rural areas to cities.

Solar-powered streetlights for residential applications

Residential includes the park, playground, industry zone, and so on. There’s a lot of traffic and people in public places, but it’s usually only in the early hours of the night. The smart solar street light can use induction mode(PIR), solar street light time control mode, and can also do induction + time control hybrid mode, so it can meet the lighting use in public places, 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 street lighting systems are beneficial for park and playground lighting needs as it helps to light signs, trails, pavilions, and parking lot. They are independent of the grid, so they can be installed anywhere in residential where there is a need for proper lighting.

The lighting of roads and garden roads in residential has changed from traditional lamps to LED lamps and then to solar street lamps trance. In the industrial zone, science, and technology park, road lighting, In industrial areas, science and technology parks, or innovation incubators parks, solar street light is more cost-effective than traditional lighting or LED lighting used for residential electricity,

Solar LED streetlights are very easy to install and maintain on remote roadways or highways where there is no electricity also. with the help of these lights, the risk of accidents is minimized as there are no external wires needed for electric connections. . The LED Streetlight provides clear visibility for pedestrians and drivers. High-quality illumination LED light system beautifies residential areas at night without polluting the environment.

Clodesun all-in-one solar street lights have been designed to withstand very hot weather conditions and high latitude areas. With 100,00+ units installed around the globe in very hot environments, like Saudi Arabia, Dubai, and Africa, A 5-year warranty protects facility owners and managers who have places that need lighting 365 nights a year without interruption, such as residential, highway, and roadways, parks, pathways, and city parking lots.

Municipal solar street lights are a cost-effective and energy-efficient alternative for municipal properties, including Highway lighting, Street/road lighting, Walkway/pathway lighting, Parking lot lighting, Residential public lighting, Park/campus/tourist resort lighting, Industrial park/construction site lighting Sign/Billboard lighting, and Security/Temporary lighting and so on.

Municipal solar street lights can help cities strengthen their infrastructure, making them less reliant on the grid. Solar panel power street lighting is powered by 100% renewable energy. Municipalities’ solar street lighting is more resilient to natural disasters, too. When the grid does not work, solar street lights stay on with uninterrupted solar power, and your city’s carbon footprint will be significantly reduced.

Because of municipal solar street lighting, towns and cities can provide cost-effective lighting for safety and quality of life in hard-to-reach areas without sacrificing their commitment to the environment and it is also important for city government agencies to update and enhance public spaces lighting systems to increase security throughout the city.

Money-saving with Municipal Solar Street Lighting

Solar street light is cost-effective because it relies on a natural, solar renewable resource for power. Using the sun’s energy means the city can save thousands because lights don’t have to be connected to the power grid at all. complete elimination of monthly electricity bills. because Solar power is free. there are no wiring or trenching fees which can lower installation costs also.

Now, we already know the most important benefits of Municipal solar street lights for your municipality, then, what we need to consider when we buy it:

we’re proud to be able to provide reliable Municipal solar LED street lights to illuminate Africa, Middle East, and Southeast Asia highways, gardens, streets, and parks, bringing needed light to remote areas. Our solar street lights are trusted and shared by many customers for years with minimal maintenance. How do we do it? Along with an innovative new German patent design solar street light and purpose-built, efficient energy management, we put extensive effort into ensuring the solar and batteries in our systems are properly scientific-sized.

A properly sized Municipal solar street light means the system has just enough solar wattage, battery capacity, and LED fixture efficiency to operate at the project， all while providing backup power to last in unpredictable weather and without adding unnecessary solar panels or batteries. It is the Goldilocks solution: not too few solar components to make the system die prematurely, and not too many to make the system needlessly expensive.

Here are 2 key factors a properly sized, reliable solar street light depends on The latitude of solar street light installation and battery capacity, and backup power.

 Location of Municipal solar street light installation

The location should always be the primary consideration for any solar lighting project. Some countries have sufficient solar energy resources, while others have more cloudy and rainy days: this is called solar sunshine and is measured in kilowatt-hours/square meter/day. Africa receives far more solar energy every day than Western Europe and North America. This means that African countries are suitable for installing solar streetlights.

Municipal solar street light Batteries and backup power

A Municipal solar street light lives or dies by its batteries, and one concern a prospective customer may have is a battery that dies prematurely. Premature battery death is almost never due to an inherent flaw in batteries or solar technology. This issue is caused by improper design, poor energy regulation, and, importantly, bad system sizing. When a manufacturer has carefully designed a system, worked on efficient energy management, and sized it with a sufficient solar array wattage and battery capacity, this solar light will run reliably for years.

LiFePo4 battery: LiFePo4 batteries are the most expensive type for solar street lights, they offer the highest energy density. Li-ion batteries are commonly used in solar streetlights.

Here’s a quick example of solar battery sizing. For this scenario, imagine our solar street light is running a 100-watt LED fixture at 100% output over a 12-hour winter night in the Philippines. Our system’s total load would be 1200 watt-hours per night (100 watts x 12 hours = 1200 watt-hours). Assuming perfect weather and the battery is fully charged at the start of the night.12 hours is not 100% power, maybe 2 hours 100%, 2 hours 70% power, and 8 hours 20% power, so what is the minimum capacity for each battery type? We need to have a scientific calculation of the capacity of the battery.

Conclusion

Proper sizing is the most important step in building a Municipal solar street light to ensure it will operate reliably over the long term. If you want to learn more about the science of solar sizing, please connect with us.