Home Life Style 6 FAQs About the Life Expectancy of Solar Panels—Answered!
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6 FAQs About the Life Expectancy of Solar Panels—Answered!

6 FAQs About the Life Expectancy of Solar Panels—Answered!

Did you know in 2022, the market size for solar power climbed by 20.5%?

The sun is a reliable and clean source of renewable energy — and solar panels make it easy for homeowners to use it for several applications. Solar panel systems have many benefits, such as lower bills and the enjoyment of green electricity.

Are you considering solar panels but unsure of how long they last? There are many frequently asked questions about the life expectancy of solar panels.

Let’s look at these and help you decide if solar panels are the right choice for you.

1. What Is the Typical Life Expectancy for a Solar Panel System?

The typical life expectancy of a solar panel system is around 25 to 30 years. This depends on the manufacturer and the quality of the system. During this time, the efficiency of the solar panels is an important factor to consider when estimating the performance of a solar panel system.

The efficiency of solar panels measures how much sunlight they can absorb and convert into energy. This can vary from one panel to the next, depending on their location and type.

Solar panel systems offer great potential for energy savings as they harness the power of the sun to generate electricity. As with most technologies, photovoltaic technology has seen significant advances over time. This enables solar panel systems to last longer and more efficiently than ever before.

If you are considering using this renewable source of energy in your home, it is significant to research solar energy to understand its benefits and drawbacks. Read about solar here and understand how such systems work and their life expectancy.

With an understanding of solar panel life expectancy, you can be sure to choose the right system to suit your needs.

2. What Factors Affect the Life Expectancy of Solar Panels?

Solar panel life expectancy is an important topic to understand in deciding whether to purchase a solar panel system. Here are some factors that can affect the life of solar panels:


Rats, mice, birds, insects, and other wildlife can cause physical damage to solar panels. They can chew electrical wiring, strip insulation off cabling, or cause scratches to the panels’ surface.

Rodents may also dig into the ground near the base of the panels, damaging the installation mounts. Additionally, nesting birds, insects, or growths of mold on the panels can block vital sunlight. This decreases the panel’s efficiency and its expected lifespan.


Temperature can influence the life expectancy of solar panels in various ways. High temperatures can reduce the efficiency of the cells. It can cause the module to degrade quicker.

If the panel is exposed to extreme temperatures for long periods, it can damage the inverter components. High temperatures can lead to a “thermal run-away.” This reduces the effectiveness of the panels even further.

Cold temperatures can reduce the performance of the panel but increase its longevity. Thus, consider the temperature of your region when installing solar panels to ensure they are sufficiently protected. To maximize the life expectancy of solar panels, install them in areas where the temperature is moderate and stable.

Certain Pollutants

Certain pollutants can reduce the life expectancy of solar panels. This includes particulate matter from fires and industrial emissions, high levels of sulfur dioxide, and nitrogen dioxide.

These pollutants both reduce the performance of the photovoltaic (PV) cells and also cause corrosion of the metal surfaces. Corrosion can reduce the efficiency of the solar panels and can ultimately lead to permanent damage.

Total Hours of Operation

Total hours of operation can refer to the amount of exposure the solar panel experiences while in operation. This covers time spent in direct sunlight and periods of shade. Over time and with long hours of operation, the solar panels can become less efficient and eventually stop working.

It is thus vital to track the total hours of operation. Avoid any long-term periods in direct sun, if possible.

Harsh Weather Conditions

Extreme weather, such as hailstorms and heavy rains, can decimate that life span. Hail can cause physical damage to the panel’s glass, while persistent heavy rain can cause water seepage, leading to rust and corrosion.

Panels that are installed on flat roofs are especially prone to water pooling. This increases the chances of water infiltration into the system. Heavy rains can also wash away debris beneath the panels, resulting in loosened screws and other fixtures.

Level of Sunlight Exposure

If solar panels are exposed to direct sunlight or too much sun, they are likely to overheat. They will not last as long as those in moderate lighting. Sunlight exposure can also cause solar panels to become stressed, leading to a shorter lifespan.

Over time, solar panels absorb UV radiation, which can cause damage to their metal frames and protective coatings. If more intense the UV radiation is, the shorter the life expectancy of the solar panel. Apart from durable materials and coatings, certain production techniques protect solar panels from the damaging effects of UV radiation.

Position the solar panels in ideal sunlight conditions to make sure that they don’t overheat and last for a long time. Place the panels away from any other surface that may block or reflect the sunlight. Also, optimize the angle and tilt of the solar panels to capture the greatest amount of sunlight and remain in optimal condition.

Improper Maintenance and Installation

Improper maintenance and installation can reduce the lifespan of the panels. For example, if the panels are installed improperly and exposed to high winds, it can damage the panels, reducing their life expectancy.

If the panel’s electrical connections are not sealed, moisture can corrode the metal and wiring. This creates a hazard and reduces the panel’s life expectancy.

Further issues can arise if the panels are not cleaned and checked for dirt, dust, and debris and if grounding wires, fuses, and surge protectors are not installed. These and other errors can lead to heat damage, module failure, and decreased production levels. Thus, this reduces the life expectancy of solar panels.

3. When Do Solar Panels Start to Degrade?

Solar panel degradation is the gradual reduction in the performance of a photovoltaic cell. Solar panels degrade right after they are installed.

The average degradation rate is around 0.5 to 1 percent each year. This means that after 25 years, a quality solar panel will still generate around 80 to 90 percent of its initial electricity output. While the effects are not drastic, monitoring the panels can help to identify potential issues and adjust accordingly. So

So, by understanding the degradation rate, solar panel owners can calculate the output over a long period. You can make an accurate investment decision.

4. Are There Any Warranties on a Solar Panel System?

Solar panel warranties cover the performance of the system over a designated number of years. This means it ensures the system will provide an expected level of energy production. Most solar panel warranties will cover at least 10 years, and some manufacturers extend warranties up to 25 years.

Warranty terms vary according to the type of material used. Some warranties also protect against any defects in material or workmanship that may occur during the installation process.

Companies may provide additional warranties or services to prolong the life cycle of your solar panels. So it is necessary to do your research before investing in a system.

Ask your installer or solar panel manufacturer what warranties they offer, and make sure they are being offered in writing. Review any warranties provided with the system you are considering. Understand the exact coverage and associated terms.

5. What Types of Solar Panels Have the Longest Lifespan?

Solar panels have long lifespans, varying from model to model and depending on the quality and type of the panel. The more expensive solar panels have a higher quality and longer life expectancy.

Monocrystalline Solar Panels

Monocrystalline solar panels are the most reliable and efficient solar panels available. They have the highest efficiency levels and the longest life expectancy of up to 40 years. This is because of the durable silicon cells that make up the panel, which can withstand more wear and tear than other types of solar panels.

Monocrystalline panels also don’t need as much maintenance as other types of solar panels. This makes them one of the most reliable solar panel choices. They are also the most space-efficient solar panel, meaning they can generate the most amount of power in the least amount of space.

Polycrystalline Solar Panels

Most people often favor polycrystalline solar panels for their high efficiency, affordability, and durability. This type of solar panel is renowned for having one of the longest lifespans of any photovoltaic technology, ranging between 25 and 35 years. These panels also boast great resistance to extreme weather and temperature conditions.

Thin-Film Solar Panels

Thin-film cells have the shortest lifespan of 10-20 years compared to other solar panel technologies. Yet, they are the most cost-effective option as they have the quickest payback period.

Despite this short lifespan, they are still considered an excellent choice for small systems in areas with reduced sun exposure. This technology also has the benefit of being lightweight and flexible. This makes it ideal for urban and low-income areas.

6. What Should You Do to Ensure Maximum Life Expectancy for Solar Panel Systems?

There are a few tips to keep in mind to ensure maximum life expectancy for solar panel systems. Here are the things you should do:

Clean the Solar Panels Regularly

Cleaning your solar panels will remove any dirt and debris that has built up on them. This can block the amount of sunlight that the panels can absorb.

Dust, sand, bird droppings, and even tree leaves are all common things that can block sunlight from reaching the solar panel’s surface and reduce its efficiency. Use mild soap and a soft cloth to avoid scratches and other damage.

Inspect the Panels and Wires Annually

Inspect your solar panels and wiring every year for potential signs of damage or fraying. Look for any discoloration in the crystalline silicon. Check any rusting or corrosion of the wires and panels and any deterioration of the sealants or frames.

Monitor the solar panel batteries, as they lose their capacity over time and thus need frequent replacement. If you find issues during the inspection, be sure to fix them to avoid bigger problems in the future.

Contact a Professional to Fix Any Damage

Contacting a professional to repair any damaged or malfunctioning parts immediately is essential. This ensures that all repairs are done in good time, without the threat of further damage occurring to your solar panels on the roof.

If there is any damage or malfunctioning parts, it is important to fix them as soon as possible. Professional technicians are trained and have access to the right materials and parts needed to repair your solar panel system correctly.

Invest in Reputable Solar Installers and Equipment

Reputable solar installers sourced from certified and trusted manufacturers will ensure your solar panel system is fitted properly. They do this with no loose connections and no risk of tampering.

Professional installers make sure they install the solar panel system correctly and place it in an optimal position. The equipment used should be well-maintained and of the highest quality.

Look for solar installers who use top-end parts last longer, such as those with strong warranties. Using high-quality and reliable components can help to prolong the life of the solar panel life cycle.

Using Certified and Efficient Solar Panel Maintenance Services

Certified technicians should be able to inspect the solar panel systems regularly, identify potential issues, and work to remedy them. These services can help reduce energy bills and maximize energy productivity. Also, they can help lower the operating costs of the system by ensuring it is operating at peak efficiency.

System maintenance is the key to making sure the system reaches its full lifespan. It helps to protect any significant investments in the solar panel system.

Consider These FAQs About the Life Expectancy of Solar Panels

Solar panels are a great renewable energy source with a long life expectancy. With the proper maintenance and installation, they can have a life expectancy of up to 30 years. With the advancements in technology, solar panels are becoming an increasingly viable option for home and business owners.

Hopefully, this article gave you the answers to the FAQs about the life expectancy of solar panels. If you are interested in learning more, contact an industry expert today!

Don’t forget to browse our site for advice on technology, products, and more.

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