How Often Should You Clean Your Solar Panels?

GB Cleaning • May 13, 2024

Expert Advice for Optimal Performance and Longevity

Solar energy has become increasingly popular in the UK as a clean, renewable, and cost-effective alternative to traditional power sources. However, many solar panel owners are unsure about how often they should clean their panels to ensure optimal performance.

In this article, we'll dive into the factors that determine cleaning frequency and provide professional insights to help you keep your solar panels in top condition.


Factors Affecting Solar Panel Cleaning Frequency


The frequency of cleaning your solar panels will depend on several factors, including:


  • Location: If you live in an area with high levels of dust, pollution, or bird activity, your panels may require more frequent cleaning.
  • Weather: Rainwater can help wash away some dirt and debris, but it may not be sufficient for removing stubborn stains or buildup.
  • Tilt Angle: The angle of your solar panels can affect how quickly dirt and debris accumulate. Panels with a lower tilt angle may require more frequent cleaning.
  • Surrounding Environment: Trees, buildings, and other structures near your solar panels can contribute to the accumulation of dirt and debris.


General Cleaning Recommendations


As a general rule, it is recommended to clean your solar panels at least twice a year, ideally in the spring and autumn. This will help ensure that your panels are operating at peak efficiency, maximising your energy savings and reducing your environmental impact.

However, if you notice a significant drop in your solar panel's power output, or if there is visible dirt or debris on the surface of the panels, it may be time for a cleaning.


The Importance of Regular Solar Panel Cleaning


Regular solar panel cleaning is essential for several reasons:


  • Efficiency: Dirty solar panels can lose up to 25% of their efficiency, resulting in lower energy production and higher electricity bills.
  • Longevity: Over time, dirt and debris can cause micro-scratches on the surface of your panels, reducing their lifespan and performance.
  • Warranty Protection: Many solar panel manufacturers require regular cleaning to maintain your warranty, so neglecting to clean your panels could void your coverage.


DIY vs. Professional Solar Panel Cleaning


When it comes to cleaning your solar panels, you have two options: DIY cleaning or hiring a professional service.


DIY cleaning can be a cost-effective solution, but it's essential to follow best practices to avoid damaging your panels. This includes using a soft brush or sponge, a mild detergent solution, and avoiding harsh chemicals or abrasive cleaners. If you decide to clean your panels yourself, be sure to follow all safety precautions, especially when accessing the roof.


On the other hand, hiring a professional solar panel cleaning service offers several benefits:


  • Safety: Professional cleaners have the training and equipment to safely access and clean your panels, reducing the risk of injury or damage.
  • Efficiency: With specialised tools and techniques, professional cleaners can clean your panels more thoroughly and efficiently than DIY methods.
  • Expertise: Professional cleaners have the knowledge and experience to identify and address any potential issues with your solar panels, such as cracks or loose connections.


Regularly cleaning your solar panels is essential for maximising their efficiency, prolonging their lifespan, and protecting your investment. While the exact frequency of cleaning will depend on various factors, it's generally recommended to clean your panels at least twice a year.

Whether you choose to clean your panels yourself or hire a professional service, taking a proactive approach to solar panel maintenance will ensure that you're getting the most out of your renewable energy system.


At G.B Cleaning Services, we offer comprehensive solar panel cleaning services to keep your panels in top condition. Our experienced technicians use the latest equipment and techniques to thoroughly clean your panels, ensuring maximum energy production and extending their lifespan.


Contact us today to schedule your professional solar panel cleaning and experience the difference for yourself.


gutters under the rain in uk
By GB Cleaning November 5, 2025
Understanding the true cost of professional gutter cleaning is essential for UK homeowners planning their annual maintenance budget.
By GB Cleaning November 5, 2025
advances in cleaning technology and equipment design have made it entirely possible to clean your gutters effectively whilst keeping your feet firmly planted on solid ground.
By GB Cleaning November 5, 2025
Understanding the perfect timing for gutter cleaning in the UK can mean the difference between protecting your property and facing thousands of pounds in water damage repairs.
November 5, 2025
White UPVC fascia and soffit boards can dramatically enhance your property's appearance, but keeping them looking pristine requires more than occasional attention.
asbestos roof cleaning
By GB Cleaning November 5, 2025
The key principles are straightforward: understand what you're dealing with, ensure work is conducted by properly trained professionals using appropriate methods, maintain comprehensive records, and never take shortcuts with safety.
By GB Cleaning November 5, 2025
Property ownership in the UK comes with unexpected responsibilities, particularly when dealing with buildings constructed before 2000. With an estimated 1.5 million buildings still containing asbestos materials