Scotland’s weather is famously unpredictable and in winter, often ferocious. If you’re considering investing in greener energy sources, you may be wondering: can solar panels survive a Scottish storm?

The good news is that solar panels are remarkably resilient and designed to handle extreme weather conditions. However, a reputable installer and post-storm maintenance, especially cleaning, is crucial to ensure optimal performance.

Are solar panels safe in high winds?

Worried your panels will come loose in the wind? Modern solar panels are engineered to withstand harsh weather, including high winds, heavy rain, snow, ice, and hail. Most panels are rigorously tested under international standards such as IEC 61215, which evaluates their durability under conditions far worse than a typical storm. This includes exposure to hailstones up to 25mm in diameter traveling at speeds of 23 meters per second.

How to protect solar panels in a storm

The quality of installation plays a huge factor. In Scotland, where wind speeds can reach over 100 mph during severe storms, panel mounting systems play a critical role. These systems are designed to secure panels firmly to roofs, reducing the risk of dislodgment. Reputable solar installers account for local wind and weather conditions, ensuring the panels are anchored appropriately. Additionally, tempered glass used in solar panels is highly impact-resistant. This gives extra protection against the elements.

What about lightning?

Lightning storms can damage to panels, so if you’re in a position prone to strikes, you may want to have a grounding system (an electric path from the panels to the ground to discharge static electricity) added during installation. A good installer will also look at the panels’ angles, to offer the best resilience to impact from debris such as hail. 

While solar panels are built to survive the storm itself, the aftermath can present challenges. Leaves, dirt, or branches, can accumulate on the panels, significantly reducing their efficiency. In some cases, panels may also develop water spots if rainwater mixes with dirt and dries on the surface. This layer of grime blocks sunlight, impairing the system’s ability to generate electricity.

Post-storm solar panel cleaning

Solar panels represent a significant investment, but regular maintenance is key to protecting their efficiency and longevity. After a storm, a quick cleaning session can restore your panels to peak performance, ensuring that you continue to reap the benefits of renewable energy. Signing up for a solar panel cleaning service can provide peace of mind. Especially in storm-prone areas.