- Typical price: £4–8 per panel (range £4–15)
- Most domestic visits: £80–150, average widely quoted near £150
- Ground-level / bungalow arrays ~£2 per panel vs ~£4+ for roof access
- Small arrays carry a minimum / call-out charge, so they cost more per panel
- Recommended frequency: once or twice a year (spring and autumn)
The quick answer: Solar panel cleaning in the UK costs £4-15 per panel in 2026, very commonly £4-8 per panel. Most domestic jobs land at around £80-150 per visit, with the average widely quoted near £150.[1] Small arrays usually attract a minimum or call-out charge. For a fixed price, call 01737 652 515.
This guide breaks down exactly what solar panel cleaning costs by panel and by array size, what's included, what pushes the price up, and whether it pays for itself in recovered generation. Whether you've a small bungalow array or a 20-panel roof in Surrey, the numbers below come from the main UK cost guides so you can sense-check any quote. If you're weighing up doing it yourself, see our DIY vs professional solar panel cleaning guide.
How Much Does Solar Panel Cleaning Cost Per Panel?
Most UK cleaners price solar work per panel, then apply a minimum charge for small jobs. The per-panel rate is driven mainly by access: a panel you can reach with a pole from the ground is far quicker and safer than one that needs a tall water-fed pole on a two- or three-storey roof.
As a rule of thumb, ground-level and bungalow arrays come in around £2 per panel, while roof-access arrays sit at around £4+ per panel.[1] The headline UK range across all property types is £4-15 per panel, but the figure most homeowners actually pay is £4-8.
| Access type | Typical £/panel | Why |
|---|---|---|
| Ground level / bungalow | £2-£4 | Pole reaches easily, fast setup, no height risk |
| Standard 2-storey roof | £4-£8 | Tall water-fed pole, more rigging time |
| Awkward / 3-storey / restricted | £8-£15 | Height-access kit, harder reach, more care |
Why small arrays cost more per panel
A cleaner's travel, water filtration setup and pole rigging take the same time whether you have 6 panels or 16. That fixed time is covered by a minimum or call-out charge, commonly £50-90. So a 6-panel array might work out at £8-12 per panel even though a 16-panel array on the same street is £4-5 per panel. It's not a markup — it's the unavoidable setup cost spread over fewer panels.
How Much Does It Cost by Array Size?
Counting your panels is the quickest way to estimate the bill. The table below shows typical per-visit totals for UK domestic arrays in 2026, drawn from the main cost guides.[1][2]
| Array size | Typical home | Cost per visit |
|---|---|---|
| 6-10 panels | Small array / bungalow | £50-£90 |
| 8-14 panels | Standard family home | £80-£150 |
| 12-16 panels | Large home | £120-£180 |
| 16-25 panels | Very large / extended roof | £150-£250 |
The most common domestic system in the UK is around 8-14 panels, which is why the often-quoted "average" job is roughly £150.[2] If your panels span two roof faces, or you have an array over a garage as well as the house, expect to be quoted toward the upper end because that's two access setups.
In Surrey? Spring is our busiest season for solar cleans — get a free quote before slots fill up, or call 01737 652 515.
What's Included in the Price?
Understanding what a professional solar clean includes lets you compare quotes fairly. A proper pure-water clean should include:
- Access assessment: Checking the array can be safely reached from the ground with a water-fed pole.
- Pure-water filtration: On-site filtering of mains water (reverse osmosis or deionising resin) so there are zero dissolved minerals to leave spots.
- Soft-brush reach-and-wash: A soft, non-abrasive brush head on a telescopic pole, fed with pure water — no pressure washing on the glass.
- Spot-free rinse: The panels are flooded with pure water and left to dry streak-free, with no detergent residue.
- No detergents or chemicals: Nothing that could damage the anti-reflective coating or affect your manufacturer warranty.
Because we clean from the ground with a pole, we never walk on your roof and never disturb the live DC wiring — safer for the panels and the property. See our solar panel cleaning service page for the full method.
What Pushes the Price Up?
Several factors can move your quote within (or above) the standard bands:
1. Roof height and access
This is the biggest single factor. A bungalow is cheap; a standard two-storey is mid-range; a three-storey terrace, panels behind a conservatory, or anything that needs height-access equipment pushes the per-panel rate up.
2. Heavy bird droppings or biological growth
Light dust rinses off quickly. Caked-on bird droppings, lichen and moss take longer and sometimes need a second pass, which adds time and cost. These are also the contaminants that hurt output most, so they're worth clearing.
3. Distance and minimum charge
Jobs a long way out, or very small arrays, hit the minimum/call-out charge. Bundling with neighbours, or with gutter or window cleaning on the same visit, spreads the setup cost.
4. Frequency and contract
A panel cleaned six months ago is far quicker than one left for three years. Booking a recurring spring-and-autumn clean usually earns a lower per-visit rate because each visit is lighter work.
Is Solar Panel Cleaning Worth the Cost?
For most homes, yes. Dirty UK panels typically lose 2-7% of output, rising to 10-15% in dusty or urban spots and up to ~25% in severe cases.[4] Crucially, a single bird dropping on a string-inverter system can drag a whole string down 20-30%, because the string runs at the level of its weakest panel.
Put simply: if a £100-150 clean restores even a few percent of a year's generation, plus clears a dropping that was crippling one string, it often pays for itself over the year. We walk through a worked ROI example in our DIY vs professional guide. The honest caveat: if your panels are genuinely clean and unshaded, you won't recover much — so we'll tell you if a clean isn't worth it yet.
How to Get an Accurate Solar Cleaning Quote
To get a firm price without a site visit, tell the cleaner:
- How many panels — count them from the ground or from your install paperwork
- Property type — bungalow, two-storey, three-storey, garage roof
- Access — can the array be reached from the ground, or is there a conservatory/extension in the way?
- Condition — light dust, or heavy bird droppings / lichen / moss?
- When last cleaned — never, last year, several years ago
A couple of phone photos help enormously. Most reputable cleaners give a free, fixed quote up front. You can also try our cost calculator for a rough exterior-cleaning estimate before you call.
Ready for Your Exact Solar Cleaning Price?
Now you know what's fair, get a personalised, fixed quote for your array. No obligation — tell us your panel count and we'll call back within 2 hours.
See Solar Panel CleaningFrequently Asked Questions
How much does it cost to clean solar panels in the UK?
Solar panel cleaning in the UK costs £4-15 per panel in 2026, very commonly £4-8. Most domestic jobs land at around £80-150 per visit, with the average widely quoted near £150. Small arrays usually attract a minimum or call-out charge.
How much does it cost per panel?
Roughly £2 per panel for easy ground-level or bungalow arrays, and around £4+ per panel where roof access and a water-fed pole are needed. Per-panel rates fall as the array gets bigger because setup time is spread over more panels.
Is solar panel cleaning worth the money?
Usually. Dirty panels typically lose 2-7% of output, more in dusty spots, and one bird dropping can cut a panel 20-30% on a string system. Recovering that lost generation over a year often covers the cost of an £80-150 clean.
How often should I budget for cleaning?
Most homes need it once or twice a year, ideally spring and autumn. Arrays under trees, near busy roads or on low-pitched roofs may need it more often. See our guide on how often solar panels should be cleaned.
Do you use pressure washing on the panels?
No. We use pure deionised water and soft non-abrasive brushes only. Pressure washing can force water past the seals and frames and damage cells, and harsh chemicals can scratch the anti-reflective coating, so we never use them on PV glass.
Get Your Free Quote
We provide free, fixed quotes for solar panel cleaning throughout Surrey. Our prices are transparent, with no detergents and no walking on your roof — just pure water and a pole from the ground.
We serve Redhill, Reigate, Crawley, Horley, Dorking, Banstead, and all areas within a 20-mile radius of RH1.
See Solar Panel Cleaning Get a free quote
Related guides: How Often to Clean Solar Panels | DIY vs Professional Solar Cleaning | UK Jet Washing Prices | Is Pressure Washing Worth It?
Original analysis and sources
Original analytical contribution: The headline "£4-8 per panel" figure repeated across cost guides hides the real driver, which is access, not panel count. Mapping the per-panel rate to access tier (ground/bungalow ~£2 vs roof ~£4+ vs awkward ~£8-15) explains why two identical 12-panel homes can be quoted £60 apart, and why a minimum charge is fair rather than a markup — the fixed setup cost simply divides over fewer panels on small arrays.
Sources
Pricing bands in this guide are taken from the main published UK cost guides and the Energy Saving Trust, not unsourced figures copied between blogs.
- Checkatrade — Solar Panel Cleaning Cost Guide 2026. Per-panel and per-job bands; ground-level ~£2/panel vs roof-access ~£4+. checkatrade.com — solar panel cleaning cost. Accessed 16 June 2026.
- MyJobQuote — Solar Panel Cleaning Cost 2026. Average job widely cited at ~£150; array-size bands. myjobquote.co.uk — solar panel cleaning cost. Accessed 16 June 2026.
- Airtasker UK — Solar Panel Cleaning Cost. Corroborating per-panel and per-visit ranges. airtasker.com — solar panel cleaning cost. Accessed 16 June 2026.
- Energy Saving Trust — Solar panel cleaning and maintenance. Typical soiling output losses and maintenance guidance. energysavingtrust.org.uk — solar panel cleaning. Accessed 16 June 2026.
