Solar Panel Cleaning
Get the most from your solar panels by keeping them clean, efficient, and safe. At Solar Assure UK, we connect you with certified professionals who follow best practices to protect your investment — no guesswork, no risk.
✅ Why Solar Panel Cleaning Matters
Solar panels are designed to work hard for decades — but dirt, dust, moss, bird droppings, and lichen can dramatically reduce their output. Even a thin layer of grime can cut energy generation by 5% to 25%, depending on location and surface build-up.
⚠️ Panels don’t need to look dirty to be underperforming. Most dirt is airborne and invisible from the ground.
By cleaning them properly, you:
- Increase system performance and energy savings
- Maximise return from Feed-in Tariff (FiT) or Smart Export Guarantee (SEG) payments
- Extend the life of your system by reducing heat hotspots and panel stress
🧽 How Are Solar Panels Cleaned?
Professional solar panel cleaning should always follow safe and approved methods, such as:
- Purified water cleaning using carbon fibre poles (safe for glass and frames)
- No harsh chemicals, pressure washers, or abrasives (these may void warranties)
- Safety-first access methods — working from the ground where possible
Our certified members are trained in working at height, electrical safety awareness, and best practices for modern solar installations.
🔐 Did you know? Some insurance policies or panel manufacturers may require proof of safe cleaning for warranties to remain valid.
📅 When Should Solar Panels Be Cleaned?
We recommend cleaning once every 6 to 12 months, depending on your location. More frequent cleaning is often beneficial if:
- You live near trees, farmland, or bird nesting areas
- Your roof has a shallow pitch (less rain runoff)
- You’ve noticed drops in generation via monitoring apps or your inverter
Spring or early summer is ideal to restore maximum efficiency before peak sunlight.
💷 How Much Does It Cost?
Typical prices for professional solar panel cleaning range between:
| System Size | Property Type | Estimated Cost |
|---|---|---|
| 8–12 panels | 2–3 bed house | £80–£130 |
| 12–16 panels | Detached house | £120–£160 |
| 20+ panels | Large or barn roofs | £150–£200+ |
📍Prices vary depending on access, roof height, number of panels, and region. Our certified cleaners provide fixed quotes before any work is carried out.
🛡️ Why Use a Certified Cleaner?
Unlike window cleaning, solar panel cleaning requires specific knowledge and equipment. Choosing a Solar Assure UK certified cleaner means:
- ✅ Fully insured and background-verified
- ✅ Trained in solar-specific cleaning methods
- ✅ Compliant with roof safety and electrical awareness standards
- ✅ Trusted to handle your panels with care
We don’t take shortcuts — all listed members are independently verified before joining.
🙋 Frequently Asked Questions
Do solar panels clean themselves when it rains?
No — rain only removes loose dust. It won’t shift bird droppings, moss, lichen, or traffic film, which are common causes of performance loss.
How do I know if my panels need cleaning?
Check your generation readings — if they’ve dropped compared to the same month last year (weather permitting), or if you see visible dirt or moss, it’s time.
Is it safe to walk on my roof to clean panels?
No. We strongly advise against DIY cleaning due to fall risk and potential panel damage. Most certified cleaners use specialist long-reach poles from the ground.
Will cleaning void my warranty?
Only if done incorrectly. All certified cleaners listed on Solar Assure UK use warranty-safe, approved cleaning methods and provide documentation if required.
Can I just use a window cleaner with a pole system?
Not all water-fed pole systems are suitable for solar panels. Certification ensures the use of pure water, correct brush types, and knowledge of what to avoid.
Do I need to be home for the clean?
Usually no — unless access is restricted. Your chosen cleaner will confirm before attending.
🔍 Find a Certified Cleaner Near You
Use our postcode search to find up to 3 trusted solar panel cleaners in your area. All certified. All verified. All ready to help you get the most from your solar.
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Solar Assure UK — powering trust in solar panel care.