AEROTERRA PDMS S.R.L.
Industrial photovoltaic maintenance
Drone cleaning, thermographic inspection and vegetation control — for industrial halls, rooftops, façades and solar parks.
0 PPM DEMINERALISED WATER · NO DETERGENTS · NO MECHANICAL CONTACT
The numbers
annual energy loss caused by soiling (IEA-PVPS Task 13)
TDS in the water we wash with, measured before every job
pressure at the glass surface, measured — not claimed
people on the roof or under the mounting structures
Services
01
Drone photovoltaic panel cleaning
We clean panels with 0 ppm demineralised water sprayed from short range. No detergents, no brushes, no mechanical contact with the glass. Surface pressure is measured and matched to the panel manufacturer's specification.
02
IR thermographic inspection and performance report
We fly the entire surface with a thermal camera and produce a map of hotspots, faulty cells and soiling levels. The report shows exactly where production is being lost — before any intervention.
03
Vegetation control with robotic machines
Mowing and vegetation maintenance between panel rows using robotic machines, on slopes and in tight spaces, with no personnel in the risk zone.
04
Roof cleaning
Industrial hall roofs, tiled and sheet-metal roofs — cleaned remotely, with no scaffolding, no lifts and nobody on the roof. Moss and lichen hold moisture against the covering and shorten the life of the material.
05
Façade cleaning
Render, concrete, precast panels, brick and curtain walls. We remove both atmospheric soiling — dust, soot, particulates — and biological growth: algae, moss, lichen and mould.
METHOD · FAÇADES
Why pressure alone is not enough on a façade
On façades, unlike photovoltaic panels, the main problem is not dust but biological growth. On a porous mineral substrate — old render, concrete, precast panel — algae, moss and lichen do not remain only on the surface. Their anchoring network penetrates the pores of the material. Pressurised water removes the visible layer but does not reach the structure beneath, while on a degraded substrate it risks detaching the render. The result is a façade that appears clean for a few weeks, after which the growth returns.
Correct treatment takes place in two stages. First: a biocidal product is applied at low pressure and left to act. The dwell time is not a formality — it is the mechanism that makes the method work, and it is measured in hours, not minutes. Second: the dead biomass is removed by rinsing.
Atmospheric deposits — dust and soot — are a different problem, with different chemistry. A single product does not solve both situations, and a real façade usually has both one and the other.
A biocide does not wash. It kills the growth — removing it is a separate step.
How we work
Thermographic inspection
We fly the surface and measure. No guesswork.
Measurement-based quote
The price follows from area, soiling level and accessibility.
Execution
Drone cleaning with demineralised water produced on site or delivered from our depot.
Final report
Documented before/after thermographic comparison.
Why us
We measure, we don't estimate
Every job begins and ends with a thermographic measurement. You get evidence, not a promise.
Zero risk to the panels
Pressure limits differ dramatically between manufacturers. We check your panels' specification before we start.
Nobody on the roof
Work at height is eliminated. Operators stay on the ground, the drone does the work.
WARRANTY PROTECTION
Measured pressure, not claimed
As of 2026, panel manufacturers state their pressure limit in two completely different ways: some at the nozzle, others at the glass surface. The difference is orders of magnitude — a claim like "we wash at X bar" says nothing about what your panel's glass actually withstands.
AT THE NOZZLE
- First Solar
- 35 bar
- Jinko Solar
- 35 bar
- Canadian Solar
- 40 bar
AT THE GLASS
- JA Solar
- 6.9 bar
- Trina Solar
- 7 bar
- Risen Energy
- 7 bar
- LONGi
- 0.03 bar
Our reference: a maximum of 7 bar at the glass surface — below the limit of every manufacturer that permits pressure washing. The measurement record accompanies the quote.
As of 2026, for Q CELLS, REC, Meyer Burger and Heckert Solar modules, where the manufacturer prohibits pressure washing, we obtain written approval before quoting.
Frequently asked questions
Technical answers, no guesswork
01Can drone washing damage the panels?
There is no mechanical contact with the glass — no brushes, no squeegees. The pressure that actually reaches the surface is measured and kept below the manufacturer's limit. We hand over the measurement record.
02What happens to the panel warranty?
Washing with hard water or unapproved detergents can be grounds for rejecting a warranty claim. We use only 0 ppm demineralised water, no detergents, and the method is documented for every job.
03Where does the water come from?
We produce it on site from your mains supply, using a mobile filtration and reverse-osmosis train, or we deliver it ready-made from our own depot. Consumption per job is measured and reported.
04Why does ordinary washing leave marks?
Tap water contains calcium and magnesium. As it dries, these stay on the glass as deposits that attract more dust. Water at 0 ppm contains nothing that can be left behind, so no wiping is needed.
05How long does it take and how often is it needed?
Frequency depends on the environment: in intensive agricultural areas one job a year is the reasonable minimum, and a second may be needed after long dry spells. The recommendation follows from the thermographic inspection, not a fixed calendar.
06Why do you work early in the morning?
At low irradiance production is close to zero, so the job does not affect the day's yield. Cold glass also washes better — washing a hot module in full sun is explicitly prohibited by manufacturers because of the microcrack risk.
Contact
Request a quote
Tell us where the installation is, its kWp and the surface type. We will come back with a proposal.
+40 755 061 172office@aeroterrapdms.roSat Lazuri, Comuna Lazuri, Satu Mare county, Romania