How Long Do Solar Panels Last

At ESOLAR, we specialise in solar panel installations and all things solar. An incredibly common question that we are asked when people are debating buying solar panels is how long they might last.

In this blog post, we are going to be talking about the typical lifespan of solar panels in the UK, the factors that can affect this and how you can prevent it in the future.

 

The Ins and Outs of Solar Panels

Solar panels are a renewable energy source that uses the sun to generate electricity without the need of fossil fuels. Solar panels are made up of many small units called photovoltaic (PV) cells. These cells are usually made from silicon, a semiconductor material.

Solar panels can be installed on rooftops, in open fields, or as part of building materials (solar shingles). The electricity generated can be used immediately, stored in batteries for later use, or fed back into the electrical grid.

 

How Long Do Solar Panels Last?

Most solar panels are made to last between 25 to 30 years. This means that for a long time, your panels will keep generating electricity, helping you save money on your energy bills.

Even after 25 years, they won’t stop working completely, but they may produce less energy than when they were new. Manufacturers usually guarantee that their panels will still make about 80% of their original energy output after 25 years.

 

What Affects Solar Panel Lifespan?

There are several factors that can affect how long your solar panels last. This can range from the weather in your area to the general quality of your materials. Here are some of the key factors to take into account.

 

Quality of Materials

The quality of materials used in solar panels plays a significant role in their longevity. High-quality panels are made with durable materials that can withstand various environmental factors, leading to a longer lifespan.

Cheaper panels might save you money upfront, but they may degrade faster and need to be replaced sooner. Investing in high-quality panels ensures that they can generate electricity efficiently for many years, making them a better long-term investment.

 

Installation

Proper installation is important to the lifespan of solar panels. Panels that are installed correctly will be securely mounted and aligned to capture the maximum amount of sunlight. Poor installation can lead to issues like loose connections, improper wiring, or even physical damage to the panels.

These problems can reduce the efficiency of the system and increase the risk of malfunctions, which may shorten the overall lifespan of your solar panels. It’s important to have your panels installed by experienced professionals to avoid these issues.

 

Weather Conditions

The weather conditions in your area can greatly affect how long your solar panels last. Panels are built to withstand various weather events, but extreme conditions like heavy snowfall, hail, strong winds, or intense heat can take a toll over time.

For example, hailstorms can crack the panels, and strong winds might loosen them if they aren’t securely installed. In areas with milder weather, panels generally last longer because they face fewer harsh conditions. Regular inspections can help catch weather-related damage early and prevent it from worsening.

 

Degradation Rate

All solar panels gradually lose efficiency over time, a process known as degradation. The degradation rate is the speed at which this decline occurs. On average, solar panels degrade at a rate of about 0.5% per year, meaning they produce slightly less energy each year.

Over 25 to 30 years, this can add up, but most panels will still be generating around 80% of their original output at the end of their lifespan. Panels with a slower degradation rate will maintain their efficiency for a longer period, extending their useful life and maximising your return on investment.

 

Bird Nesting

Bird nesting can also impact the lifespan of solar panels. Birds may build nests underneath or around solar panels, which can cause a few issues. Nests can block airflow and reduce the panels’ ability to cool down, leading to overheating and reduced efficiency.

Additionally, bird droppings can accumulate on the panels, blocking sunlight and further reducing their efficiency. In some cases, nests or bird droppings can also cause physical damage to the wiring or panels. Regular cleaning and using deterrents can help prevent bird nesting and protect your solar investment.

 

How Can Maintenance Help My Panels?

Regular maintenance is key to keeping your solar panels working well for a long time. Dirt, dust, and debris can build up on the panels and block sunlight, reducing their efficiency. Also, checking the system regularly can catch any small problems before they become big, expensive repairs.

At ESOLAR, we suggest getting your panels inspected and cleaned by a professional at least once a year. This helps ensure your system is always running at its best.

 

How Much Does Maintenance Cost?

The cost of maintaining your solar panels can vary, but it usually ranges from £150 to £200 a year. Considering how much you save on energy bills, this is a small price to keep your panels in good shape.

If you would like a personalised quote for you, you can get in touch with the ESOLAR team today and we will be happy to help!

 

Signs That Your Solar Panels May Need Replacing

Even though solar panels are built to last, here are some signs that they might need to be replaced:

• Drop in Energy Production: If you notice a big drop in the energy your panels produce, they might be losing efficiency.
• Visible Damage: Cracks, discoloration, or bending in the panels can be signs they need to be replaced.
• Outdated Technology: If your panels are over 20 years old, they might not be as efficient as newer models. Upgrading could save you more money in the long run.

If you’re experiencing any of these issues, ESOLAR can help you figure out if it’s time to replace your panels.

 

How Can ESOLAR Help?

At ESOLAR, we’re here to help with all your solar needs. From installing high-quality panels to providing maintenance and support, we’re committed to making sure your solar panels work well for as long as possible. Our team is always ready to answer your questions and help you get the most out of your solar investment.

 

Key Takeaways

• Solar panels generally last between 25 to 30 years, maintaining around 80% of their original energy output after 25 years.
• Proper installation ensures maximum sunlight capture and reduces the risk of malfunctions that could shorten the lifespan of the panels.
• Extreme weather conditions can affect the longevity of solar panels, with regular inspections recommended to catch any weather-related damage early.
• Solar panels typically degrade at a rate of 0.5% per year, with most panels still producing 80% of their original output after 25 to 30 years.
• Bird nests and droppings can reduce panel efficiency and cause physical damage; regular cleaning and deterrents are advised.
• Regular maintenance, including professional inspections and cleanings, is crucial for optimal panel performance and longevity, costing around £150 to £200 annually.
• Indicators like a significant drop in energy production, visible damage, or outdated technology may signal the need for panel replacement.