how many years does a solar street light last

Solar lighting has been the most sought-after outdoor lighting solution to residences, commercial and government infrastructure. Since they offer energy independence, low maintenance and cost savings in the long term, these lights are available in garden pathways to large-scale solar street lights projects.

Nonetheless, the most popular question that is posed by buyers is not very complicated: How long do solar lights last?

This depends on various issues such as quality of the components, the environment and maintenance. Overall, solar lighting systems have a life span of 5-25 years, with various components having different life span.

This guide will partition how long solar lights will last, factors that influence their longevity and how to increase the last length of the solar lights.

The expected life of solar lights.

Solar lights are made in such a way that they take years to be serviced or maintained. The total life of the system in most instances is between 10-20 years, depending on the quality of materials used and design of the system.

There are even solar lighting systems that are of quality and can last up to 25 years when there is only need of changing the battery at times.

In smaller garden lights or decorative solar lamp, the life may be short as 2-15 years, depending on the quality of the battery and usage patterns.

The cause of these differences is simple, as a solar lighting system consists of a number of parts, and each has its service life.

Appearance of the Lifespan of the Key Solar Lighting Components.

In order to get a better insight into the longevity of solar lights, it is noteworthy to look at the lifespan of the main parts of a solar lighting system.

1. Solar Panels

The longest component of the system is normally the solar panels.

Majority of the photovoltaic panels employed in solar lighting systems have a life of 20 to 25 years with a slow down in efficiency.

Gradually, panels become less and less efficient, typically at a rate of less than 1 percent per year, although they may continue to provide enough power to run lighting systems over decades.

2. LED Light Source

Contemporary solar lights are designed based on LED technology since it is very efficient and economical.

In practice, the LED lights have an average lifespan of 50,000 to 100,000 or 10-20 years of operation basing on the usage of the equipment.

The LEDs generate higher light and use less energy as compared to traditional lighting technologies, and this also contributes to the increase of the lifetime of the whole system.

3. Rechargeable Batteries

Solar panels convert sun energy into batteries which are used to illuminate lights at night.

The battery life is very much dependent on the type of battery:

• Lead-acid batteries: 3–5 years
• Gel batteries: 4–6 years
• LiFePO4 batteries or Lithium-ion: 5-10 years and above.

In most solar lighting systems, the replacement of battery after a few years can prolong the life of the whole system by a long way.

4. Solar Controllers

The controller is in charge of power distribution and charges. It prevents overcharge and deep discharge of the battery.

Although controllers tend to be stable, they sometimes need to be replaced as a result of the electrical surges or severe weather.

5. Lamp Pole and Structure

The structural elements like poles and mounting brackets usually have a service life of 10 to 30 years and this can be determined by the quality of the material used and its capacity to withstand corrosion.

The aluminum or galvanized steel poles of high quality usually have very minimal maintenance that is needed.

What determines the Lifespan of Solar Light?

Despite the fact that the solar lights are meant to be durable, there are a few factors that can affect the operation and the life of the lights.

1. Quality of Components

The quality of components is the most significant aspect that influences the lifespan of solar light.

Premium systems use:

• Monocrystalline solar-panels of high-efficiency.
• Long-life lithium batteries
• High-lumen LED chips
• Weather-resistant housings

Poor quality parts could decrease the life of the system considerably.

2. Climate, Environmental Conditions.

Weather exposes outdoor lighting systems to weather conditions like rain, heat, dust and snow.

Harsh weather may expedite the process of deterioration of other elements like batteries and electronic controllers. A corrosion may also occur due to the coastal environments provided that the materials are not properly treated.

3. Installation Quality

Correct installation would guarantee the intensity of sunlight bestowed on the solar panel and high efficiency of the system.

Wrong installation can result in:

• Poor solar charging
• Shorter battery cycles
• Poor performance in lighting.

4. Maintenance Practices

Solar lights do not need much maintenance however with just simple care one can increase the life of the solar lights considerably.

Basic maintenance includes:

• Washing solar panels on a regular basis.
• Monitoring battery performance.
• Checking wiring connections.
• It is important that the light fixture is not obstructed.

Periodic maintenance ensures that there is system efficiency and reliability.

Solar lights have a limited life, and extending their life is possible.

To ensure that your solar lighting system has the maximum life span, there are a number of practical measures that can be put in place.

Select Good-Quality Products.

The problem of high-quality solar lights purchased in reliable manufacturers can make a considerable contribution to the duration of the system.

Materials of higher grade tend to offer:

• Better weather resistance
• Higher LED efficiency
• Longer battery life
• Better charging characteristics.

Install Lighting in Sunny Places.

Solar lights work optimally in the direct sunlight.

They should not be installed in shaded places under trees, buildings, or any other hindrances which decrease solar charging.

Wash Solar Panels on a regular basis.

The solar panels may be effused by dust, dirt and debris.

Washing the panels after every few months is a guarantee that they are able to get as much sunlight as possible and charge the battery.

Changing Batteries When required.

Batteries were the most regularly replaced component hence by replacing batteries after every 5 to 8 years not only will the performance of the system be restored but also the life of the whole solar lighting system would be improved.

The reason why Solar Lighting is a long term investment.

Solar lights do not only have an environmental friendliness, but it is also a good long-term investment.

Solar lights compared to the traditional lighting powered by grids have the following advantages:

• No electricity costs
• Minimal maintenance
• Wireless installation.
• Long operational lifespan

Although some of the parts may have to be replaced with time like the batteries, the entire unit can be used very many years with efficiency.

Solar lighting is also a secure and economical alternative to municipalities, companies, and homeowners who would like to find cleaner lighting solutions.

Final Thoughts

How long then do the solar lights last?

The average solar lighting systems last 10-20 years; however, individual components such as solar panels can last even longer.

The lifespan finally depends on the system quality, installation conditions as well as the maintenance practices. Solar lights may be relied upon to deliver reliable light over decades by choosing a quality equipment and carrying out periodic maintenance.

With the evolution of the solar technology, the contemporary solar lighting lights are now more efficient, more resilient, and cheaper and are becoming a more popular option as a sustainable outdoor lighting system in most countries around the globe.