Can solar panels handle bad weather like hail or heavy snow?
Solar panels are pretty robust when it comes to bad weather. They're designed to handle typical UK hail without problems – most can take hailstones at normal speeds just fine. It's only the really large ones travelling over 50mph that might cause chips or cracks, but that's quite rare here.
Snow's actually not an issue for the panels themselves. A few centimetres won't hurt them, and because they're angled, snow usually slides off naturally anyway. If you get a proper dump of snow that blocks the light, you can gently brush it off with something soft – just don't use anything metal that might scratch the surface.
The panels are waterproof and built for our climate, so rain, frost and typical storms won't bother them. The key is getting them properly installed by someone who knows what they're doing – that way they're securely mounted and sealed against weather getting in where it shouldn't.
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Can Solar Panels Handle Bad Weather Like Hail and Heavy Snow?
If you're considering solar panels for your UK home, you're probably wondering whether they'll survive our unpredictable weather. The short answer is yes – modern solar panels are surprisingly robust and designed to cope with everything from hailstorms to heavy snowfall.
How Solar Panels Handle Hail
Solar panels are built tough, with tempered glass covers that can withstand most hailstones you'll encounter in the UK. They're tested to survive hailstones up to 25mm diameter hitting at speeds of around 23 metres per second – that's equivalent to stones falling from about 15 metres high.
The reality is that severe hailstorms are relatively rare in Britain compared to places like Texas or Australia. Most UK hail is small and won't damage properly installed panels. However, exceptionally large hailstones (think golf ball-sized or bigger) falling at high speeds could potentially cause chips or cracks over time.
When choosing panels, look for those with certifications like IEC 61215 or IEC 61730, which indicate they've passed rigorous weather testing. Quality panels from reputable manufacturers typically come with 20–25 year warranties that cover weather damage.
Dealing with Snow and Ice
Snow is actually less problematic than many people think. Solar panels are designed to handle snow loads, and the slick surface combined with the typical 30–40 degree installation angle means snow usually slides off naturally.
A light dusting of snow won't stop your panels working entirely – some light can still penetrate thin layers. Heavy snow will obviously block sunlight and reduce output temporarily, but it won't damage the panels themselves.
Clearing Snow Safely
If you need to clear snow, use a soft brush or squeegee with an extension handle. Never use metal tools, shovels, or anything that could scratch the glass surface. Many installers recommend leaving light snow to melt naturally rather than risking damage from inappropriate cleaning tools.
Interestingly, snow can sometimes boost performance by reflecting additional light onto the panels once it starts melting – a phenomenon called the "albedo effect".
UK Weather Advantages
Britain's temperate climate is actually quite kind to solar panels. We don't experience the extreme temperature swings that can stress panels in other countries. The moderate temperatures, combined with decent sunlight levels even in winter, mean UK solar installations often perform reliably year-round.
Rain is beneficial too – it naturally cleans your panels, washing away dust and debris that might reduce efficiency.
Costs and Practical Considerations
A typical domestic solar installation costs £4,000–8,000 depending on size and quality. While premium panels with enhanced weather resistance cost slightly more, the difference is usually £200–500 for a standard home system – worthwhile for peace of mind.
Most home insurance policies cover solar panels, but check your policy covers weather damage. Some insurers offer specific renewable energy cover for around £50–100 annually.
Common Mistakes to Avoid
Aggressive snow removal: Using rakes, shovels, or scrapers can permanently damage panel surfaces
Ignoring minor damage: Small chips can worsen over time, so get them checked by a professional
Choosing cheap panels: Budget panels may not have the same weather resistance as quality alternatives
Poor installation: Inadequate mounting can lead to wind damage or water ingress
Professional Installation Matters
Proper installation is crucial for weather resistance. MCS-certified installers understand UK building regulations and will ensure panels are securely mounted with appropriate weatherproofing. They'll also position panels to minimise wind loading and optimise snow shedding.
A well-installed system should last 25+ years with minimal weather-related issues. Regular maintenance checks every few years will catch any problems early, ensuring your investment stays protected whatever the British weather throws at it.
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