How long do solar panels last?

Last Updated on 09/07/2025 by owen_2023

How long do Solar Panels last?

Established in 2017, Solarstream has a wealth of knowledge that only experience brings. We have nationwide coverage. Please contact us for your local customer service agent. The Solarstream in-house team brings an expert skills set of knowledge to all the solar projects we get involved in. This includes full project management, technical expertise to supporting our customers grant applications right down to the highest quality products we install.

You might be wondering “How long do solar panels last?”. Solar panels typically run at optimal efficiency for 25 to 30 years according to industry standards. They remain functional beyond that but with gradually less electricity per year. This extended lifespan ensures you’ll enjoy the benefits of solar energy for decades.

Solar panels are a great option for homeowners interested in making their homes a little greener and avoiding the financial impact of ever-rising energy costs. Knowing that you will enjoy the benefits that come with these appliances for decades, then, is highly reassuring.

Having a better idea of the life expectancy of solar panels is not only great for your peace of mind, but it can also help you decide to purchase these appliances. Installing solar panels can be a substantial expense. However, with the estimated solar panel lifespan being 25-30 years, homeowners know that they can expect their investment to last them for years to come.

Factors That Influence Solar Panel Performance Over Time

Understanding the factors that affect solar panel performance and lifespan is key when investing in them. These factors include environmental conditions, installation quality, and manufacturing standards. Regular solar panel maintenance is super important for keeping them running smoothly. Environmental factors play a big role in how long solar panels last. Extreme temperatures, humidity, and weather can affect how well they work and how long they last. The quality of the installation and where they’re placed also make a big difference in how efficient and long-lasting they are.

Installation Quality and Positioning

A well-designed and installed solar panel system enhances performance and lifespan. Ensure professional installation to maximize efficiency and longevity.

Environmental Impact on Solar Panel Longevity

The main reason they don’t last forever is the weather and other environmental factors. It’s pretty obvious that extreme weather like high winds, hail storms, freezing blizzards, rapid temperature changes, high humidity, or extreme heat can damage your solar panels or the stuff that supports them. But there are some sneaky things that can also mess with them.

• Exposure to ultraviolet light and other airborne pollutants that cause micro-cracks, also known as micro-fractures
• Branches or even twigs hitting the panels and damage the surface
• Animals damaging the panels by nesting or moving over the surface

Quality Of Materials

The higher the quality of the materials that are used, the longer the solar panel will last. On the other hand, if lower-quality materials are used, the lifespan of the solar panel will be shorter.

Manufacturing Quality and Brand Reputation

The quality of solar panels and the manufacturer’s reputation are also critical. Choose reputable brands with high-quality panels and comprehensive warranties to safeguard your investment.

Cleaning And Maintenance

To keep your solar panels in top shape, you’ll need to give them a good clean if there’s any dirt or debris on them. This way, you can prevent any damage to the panels and catch any issues early on so you can replace the affected parts. But don’t worry, solar panels have a special coating that makes it easy for rainwater to wash away most of the dust and dirt.

Understanding the factors affecting solar panel performance and maintaining your system ensures long-term clean energy generation. Regular solar panel maintenance and inspections help prevent major issues, extending your system’s lifespan and efficiency.

If you are interested in Residential Solar Systems or Business Solar Systems then please contact our friendly customer service team on info@solarstream.ie or call 1800 929 009.