How Long Do Solar Panels Last UK?

How Long Do Solar Panels Last In The UK?

Solar panels typically last between 25-30 years. 

Solar panels can last much longer than 30 years, however, you’ll find that most warranties and guarantees span for 25-30 years. 

In an era where renewable energy sources are gaining prominence, solar panels have emerged as a leading contender for sustainable electricity generation.

Their eco-friendly nature and potential for long-term energy savings have propelled them into the mainstream energy market. If you're considering making the switch to solar energy, you might wonder: how long do solar panels last?

In this blog post, we'll delve into the intricacies of solar panel lifespan, factors affecting it, and what you can do to maximize their longevity.

Understanding Solar Panel Lifespan

Solar panels, also known as photovoltaic (PV) panels, are devices that convert sunlight into electricity using photovoltaic cells.

These cells, typically made from silicon, absorb photons from the sun's rays, which then generate an electric current.

But like any technology, solar panels aren't immune to the effects of time and environmental conditions.

What Happens To Solar Panels After 25 Years?

Your panels can keep working for longer than 25-30 years, however, their efficiency rates might start to drop. 

Similar to other electrical devices, over time, their overall effectiveness is weakened after continual use. 

Essentially, your panels will work, but probably won’t work as if they were brand new - just like any other product.

What Happens If Your Panel's Efficiency Drops In Less Than 25 Years?

A sudden drop in efficiency could be due to dirt or dust build up - check to see if your system needs cleaning.

If you’ve noticed a drop in efficiency even though your panels aren’t very old, it may be worth getting a maintenance check booked in.

If you do have any issues, your warranties from the manufacturer should cover any necessary repairs or replacements. 

What About Solar Panel Degradation?

Solar panel degradation occurs gradually over time. Factors like long-term exposure to UV rays and adverse weather conditions impact degradation rates.

However, solar panels in moderate climates like the UK can retain 96% of their generation capabilities even after 20 years.

Proper installation, ensuring temperature control and ventilation, is crucial to maximize panel efficiency.

How Can I Make Sure My Panels Last?

To extend the lifespan of your solar panels, consider these three tips: 

• Choose quality brands like Perlight, JA Solar, or Tesla

• Choose an MCS accredited installer so the installation is carried out by a professional

• Regularly monitor and maintain your panels to keep them clean and free from dirt build up

Several factors influence the lifespan of solar panels, including the panel's quality, the installation quality, and maintenance. High-quality panels degrade at a minimal rate of around 0.4-0.5% annually, generating only 12-15% less power by the end of their 25-30 year lifespan. Using an MCS accredited solar panel installer and implementing regular monitoring and maintenance practices can ensure optimal performance and coverage under warranty.

To extend the lifespan of your solar panels, consider these three tips: choose a quality solar PV system, opt for an MCS accredited installer, and regularly monitor and maintain your panels to keep them clean and free from debris.

What Are The Longest Lasting Panels In The UK?

Several factors influence the lifespan of solar panels, ranging from the manufacturing quality to the environment in which they are installed.

The quality of materials used and the manufacturing process play a significant role in determining how long a solar panel will last.

Panels from reputable manufacturers often come with longer warranties and a track record of reliability.

Q: How long do panels last in the UK?

The geographical location of your solar panels can impact their longevity. The UK is a great place for solar due to the cooler weather and ambient temperatures.

Panels in areas with harsh weather conditions in the UK like heavy snowfall may experience a faster decline in efficiency.

Q: Can high temperatures affect solar panel lifespan?

High temperatures can reduce the efficiency of solar panels over time.

However, modern panels are designed to withstand temperature fluctuations to a certain extent.

Q: How does UV radiation impact solar panel longevity?

Solar panels are continuously exposed to UV radiation from the sun, which can cause materials to degrade slowly over time. Quality panels are built to endure this exposure without significant damage.

Q: How does maintenance affect the lifespan of solar panels?

Regular maintenance can extend the life of your solar panels. Cleaning dust, dirt, and debris from the panels' surfaces ensures that they can efficiently absorb sunlight. Additionally, addressing any issues promptly can prevent further damage.

Q: Do different types of solar panels have different lifespans?

Different types of solar panels have varying lifespans. Monocrystalline panels, for example, are known for their durability and tend to last longer than polycrystalline panels.

Q: Does the efficiency of solar panels decline over time?

Over time, the efficiency of solar panels decreases.

While they may still produce electricity after 25 to 30 years, their output might decrease by around 20% or more, requiring more panels to generate the same amount of electricity.

Maximizing Solar Panel Longevity

To ensure that your solar panels reach their maximum potential lifespan, here are some tips to consider:

Q: Does the type of panel matter?

Yes, certain brands are better made than others.

Invest in solar panels from reputable manufacturers with a proven track record of producing reliable and durable products.

While they might come at a slightly higher cost, the long-term benefits often outweigh the initial expense.

Q: Do I need to clean my system?

Yes, cleaning your panels helps remove dirt, dust, bird droppings, and other debris that can hinder their performance.

Make sure to follow the manufacturer's guidelines for cleaning.

Q: How can I monitor the performance of my solar panels?

Most brands also include a free remote monitoring app that you can check using your smartphone.

Keep an eye on your solar panels' performance. Many systems come with monitoring tools that allow you to track energy production and detect any significant drops in output.

Q: Do I need to maintain my system?

A professional maintenance check every few years to can prolong the lifespan of your system. Qualified technicians can spot problems that might not be visible to the untrained eye.

Schedule a check if you have noticed a sudden drop in the performance of your system.

Q: How does the weather affect solar panel lifespan?

If you live in an area with extreme weather conditions, panels may be damaged by severe storms or hail. However, keep in mind panels are specifically designed to withstand storms, strong winds, and more - it’s only unusual weather that could pose a problem.

In standard weather you might need to remove snow from your panels during winter or rinse them now and then to remove any built up dust or dirt.

Generally, in the UK, our weather shouldn’t adversely affect solar systems.

Solar Panel Warranties

Q: What does a solar panel warranty cover?

When purchasing solar panels, you'll often find that manufacturers offer warranties that cover a specific period.

These warranties can range from 10 to 25 years, with some even extending up to 30 years.

It's important to carefully read and understand the warranty terms before making a purchase.

Warranties might cover different aspects of the panels, such as power output, manufacturing defects, and more.

A longer warranty period might indicate a manufacturer's confidence in the longevity of their product.