How long do solar panels last?
Typical lifespan of solar panels
Solar panels are built to last, and you can typically expect them to perform effectively for at least 25 to 30 years. Most reputable solar panel manufacturers offer warranties of 25 years, demonstrating confidence in their product durability and reliability.
In addition to the standard warranty, many panels come with a performance guarantee lasting around 30 years, meaning they'll still deliver a high proportion (usually around 80–90%) of their original energy output even after three decades.
Minimal maintenance required
One of the best things about solar panels is that they require almost no ongoing maintenance or servicing. After a professional installation, the system largely takes care of itself. You don't have to worry about routine servicing or complicated upkeep—solar panels are designed to quietly and reliably generate energy for years with minimal intervention.
Cleaning your solar panels
Solar panels generally self-clean through rainwater, which removes most dust and debris naturally. However, there might be specific cases when panels require cleaning—for example, if one panel sits directly below a chimney and accumulates bird droppings or other heavy debris. In such cases, cleaning can restore the panel’s efficiency.
If cleaning is required, the easiest and safest way is to ask your local window cleaner to clean your panels using a water-fed brush pole (similar to what they use for high windows). Before undertaking any cleaning, always follow the guidance provided by your solar panel installer. They’ll advise on the correct safety procedures, such as isolating the system safely before cleaning.
Cleaning considerations and coating
While occasional cleaning is fine, it's important to understand that solar panels have a special protective coating similar to a long-lasting car wax. This coating helps repel dirt and water, keeping your panels clean and efficient. Regular or overly vigorous brushing, especially with abrasive actions, can gradually break down this coating.
The more frequently and aggressively you clean the panels, the faster you'll wear down this protective layer, causing them to require cleaning more often. So, the rule of thumb is simple: only clean panels if absolutely necessary, and when you do, use gentle methods as advised by your installer.
Making solar panels last even longer
Ensuring your solar panels reach their full lifespan is straightforward. Professional installation, minimal intervention, and gentle cleaning only when needed will keep them operating efficiently for decades. At Creative Low Carbon, we provide clear guidance on panel maintenance and cleaning, ensuring your system stays safe and effective throughout its lifespan.
If you have any questions about caring for your solar panels or want more advice about extending their performance, don’t hesitate to get in touch. Our friendly team is always here to help.
