Why Is Solar Panel Cleaning Important?
Solar panels work continuously outdoors — dust, bird droppings, lichen, moss and pollen accumulate on the panel surface and block sunlight. Even a thin layer of dirt can reduce system output by 10–25%. That means a 6 kWp system is effectively operating as only 4.5–5.4 kWp — and you're paying for electricity your system could be generating.
Professional solar panel cleaning with demineralised water and soft equipment restores the panels' original transparency and efficiency without any risk of damaging the surface or voiding the warranty.
How Professional Solar Panel Washing Works
Demineralised water
We use specially treated water with no mineral salts — when it dries it leaves no streaks, deposits or limescale marks on the panel surface.
Soft brushes
Specialist soft brushes with long handles allow panels to be washed from the roof edge or with climbing equipment — without contact with the panel cells.
No chemicals
We do not use chemical cleaning agents — they can damage the panel's anti-reflective coating and void the manufacturer's warranty.
Safe work at height
All cleaning work is carried out with appropriate safety equipment — harnesses, ropes, anchor points. We do not stand on the panels.
Visual inspection
During cleaning we carry out a visual inspection of the panels — cracks, damaged connections and loose mounting points are recorded and reported.
Before/after photos
We document the condition before and after cleaning — you can see what the cleaning achieved and receive confirmation that the work was done.
When to Clean Solar Panels?
- Spring (April–May) — ideal timing after winter, before the active season. Removes winter dirt and salt deposits.
- Mid-summer — if panels are in a dusty location or near agriculture, a second cleaning boosts output during the hottest season.
- Autumn (September) — after summer, before leaves arrive and damp weather sets in. Lichen and moss start forming in autumn.
- Any time — if you notice generation has dropped or the panels are visibly dirty (bird droppings, dust, sand etc.).
Cleaning Combined with Maintenance — Full Service
Many clients combine cleaning with maintenance — during one visit we carry out both the washing and the technical inspection with thermal camera and electrical measurements. This is more cost-effective and convenient — one visit, complete service, detailed report.
If you're not sure whether your system just needs cleaning or also a full maintenance, call or fill in the form — we'll help you choose the right service for your situation.
We use only demineralised water and soft brushes — after our cleaning the panels are clean, without limescale marks or scratches. If the panels are not clean after the visit — we return at no extra cost.
Why Choose Us?
Demineralised water
Specialist water leaves no streaks or limescale deposits — panels stay clean even after the first rain.
Safe work at height
All work carried out with certified safety equipment. No risk to client or workers.
Inspection included
During cleaning we carry out a visual inspection and record any issues that may need attention.
Before/after photos
We document the cleaning result — you can see a real improvement in output.
Fast response
Request processed within 5 minutes. Visit arranged quickly and conveniently for you.
All of Latvia
We serve clients across Latvia — Riga, greater Riga and all regions.