SKYMODEL drone thermography

Find every faulty module. Before it costs you money.

You fly your system with a thermal drone – we deliver the standards-compliant inspection report within 24–72 h: health score, finding and GPS coordinate for every module, lost yield in €/year.

For rooftop and ground-mount systems – from 5 kWp to MWp scale 5.08% average power loss from undetected faults – we make them visible For commissioning new systems and for existing ones in operation No subscription – from €119 per inspection
View a sample report
Report in 24–72 h IEC TS 62446-3 & VATh Standards-compliant test report Signed off by a certified PV service technician
Inspection report System 0066
99.18 kWp · 262 modules
85/100
Health score
23
Flagged
≈512kWh/a
Lost yield
24.1K
Max. ΔT
Thermal drone image of a rooftop PV systemTrue-to-scale 3D model of the system2D view of the categorised modulesAI analysis of a module with classified hotspots
M-117 · ΔT 24.1 K
M-203 · ΔT 11.6 K
Critical 1 Faulty 4 Warning 7 Monitor 11 GPS per module
Report in 24–72 h
PDF + interactive 3D model
Why thermography

Every system has faults. Yours too.

Your inverter doesn't show you most of them.

5.08%
average power loss from system faults – more than doubled since 2021
Raptor Maps Global Solar Report 2026, >125 GW analysed
3.36%
of modules already show defects ex works – before transport and installation
Kiwa PI Berlin, quality analysis 2025
26.9%
of losses trace back to string faults – often from day one
Raptor Maps Global Solar Report 2026
At handover

New systems: hand over safely, secure your warranty.

One in thirty modules is already flagged ex works. Document the condition before the warranty runs out.

Uncover transport damage: micro-cracks and cell fractures often occur on the way to site – invisible to the eye, unmistakable in thermal imagery.
Find installation faults: open or miswired strings, faulty connectors and bypass diodes – before they cost you yield for years.
Document the baseline: a verified initial condition to IEC TS 62446-3 as the basis for EPC handover, warranty and insurance.
In operation

Existing and ageing systems: win back lost yield.

Monitoring only sees the total. Thermography shows you which module you need to replace.

Make creeping faults visible: hotspots, PID and bypass faults grow over years – in inverter monitoring they disappear into the noise.
Replace deliberately instead of losing broadly: the report ranks every module by severity – you only repair what pays off.
Use your warranty window: documented findings before product and performance warranties expire – as the basis for claims against manufacturer and installer.
Return on investment

An inspection that pays for itself.

More than 125 GW of analysed PV capacity shows it: systems lose an average of 5.08% of their output to undetected faults – and the trend has been rising for years. On a 1 MWp park that's roughly 50,000 kWh a year you could be feeding in, but aren't.

Our inspection costs a fraction of that – and shows you exactly which modules cause the loss. Usually it pays for itself with the first string fault found.

Sources: Raptor Maps Global Solar Report 2026 (5.08% average equipment-related power loss, >125 GW data base) · Kiwa PI Berlin 2025 (3.36% of modules flagged ex works) · BNetzA solar auction, volume-weighted award value 07/2025: 4.84 ct/kWh. Worked example assuming 1,000 kWh/kWp specific annual yield.

Worked example 1 MWp ground-mount system
Annual yield 1,000,000 kWh
Average loss from system faults (5.08%) − 50,800 kWh/a
Feed-in tariff (EEG award 2025) 4.84 ct/kWh
Lost revenue ≈ 2,459 €/year
SKYMODEL inspection report from 250 €one-off
Pays for itself ≈ 10× in the first year alone*

* In this specific example – real results vary and are individual to each system. Prices net, excl. VAT.

How it works

From the flight to the report

A few steps to a finished inspection report – no thermography expertise required on your side.

Fly the site

Drone flight following a clear, illustrated guide – with free phone support.

Upload

Upload your radiometric thermal images straight from the browser.

AI analysis

Modules are detected, segmented and thermally assessed automatically.

Report in 24–72 h

PDF plus interactive tools for maintenance and repair.

For step 1

Flight guide: how to capture the data properly

Altitude, overlap, gimbal angle and turning manoeuvres for the Mavic 3T, Matrice 4T(D) and Matrice 30T – condensed into a few pages.

Open flight guide
The report

Every fault – named and rated precisely

Assessment of hotspots, bypass faults and PID. Power degradation across the whole system is estimated by Monte Carlo simulation – including lost yield in €/year.

85/100
Overall health score
262
Modules analysed
23
Flagged modules
≈512kWh/a
Estimated lost yield

Four severity levels, clearly graded

Every flagged module is categorised by its maximum temperature difference (ΔT) – from a mild anomaly to an acute fire risk.

ΔT > 3 K> 10 K> 20 K> 40 K
Critical
ΔT > 40 K · T_max > 120 °C
Immediate action required – replace or remove the module now to avoid fire risk.
Faulty
ΔT > 20 K · bypass fault
Severe hotspot or bypass fault – replace or repair at short notice.
Warning
ΔT > 10 K
Significant hotspot – investigate soon and replace in the medium term if needed.
Monitor
ΔT > 3 K
Mild anomaly – clean it and keep an eye on it during routine maintenance.
Fault patterns

These are the faults we make visible

Every system fault has a characteristic signature in thermal imagery. A selection – the report names, locates and rates every finding.

Hotspot (cell defect)

critical
Single hot cell · ΔT up to > 40 K

Cell crack, micro-defect or partial shading from leaves, soiling and lichen. The most common cause of fire.

Bypass diode / substring

high
One third of the module evenly hot

Short-circuited or conducting bypass diode – 33% to 66% yield loss on every affected module.

Overheated junction box

possible fire risk
Hotspot along the top edge of the module

Corroded or loose terminal, high contact resistance in the junction box – a possible fire risk.

Open-circuit string

high
Entire string evenly cool

Blown fuse, disconnected DC cable or inverter fault – the string delivers no current.

Short circuit / mismatch

high
Module clearly warmer than its neighbours

Wiring or polarity error, or a short circuit – often present from commissioning onwards.

PID degradation

medium
Warm cell edges, gradient towards the frame

Potential-induced degradation – a creeping loss of output across whole modules that grows over years.

…and many more: delamination, glass breakage, soiling and lichen, mismatch from module tolerances. We classify every thermally flagged module to IEC TS 62446-3.

Your result

2D map and 3D model of your system

Every flagged module – colour-coded by severity, located exactly in the real system geometry and in the true-to-scale 3D model.

System 858219 · categorised module overview
True-to-scale 3D model of the system
> 3 K > 10 K > 20 K > 40 K South–north · west–east · height true to scale

Findings by severity

23 modules assessed
Distribution of findings by severity
AI analysis

From the real image to the AI analysis

From every radiometric thermal image our AI identifies the module, measures the temperature difference pixel by pixel and classifies each hotspot – normalised to 1000 W/m².

Real image (RGB)
Real image of a PV module
AI analysis · hotspot classification
AI-assisted thermography analysis with classified hotspots

Example: module 858219 with two hotspots (ΔT +12.7 K and +9.4 K) – detected, measured and colour-coded by severity automatically.

For the installer

Everything for maintenance & repair

The report doesn't stop at the finding. You get the tools to locate and fix every fault on site.

Interactive 3D model

Locate every faulty module in the real system geometry – row, position and orientation at a glance.

GPS & Maps coordinates

Exact GPS coordinates for every flagged module. One click opens Google Maps – your technician finds the module immediately on site.

2D overview maps

Standards-compliant categorisation maps of the whole system – as a work order and for your documentation.

Full report

PDF report – sorted by urgency & finding

Every flagged module with its finding, ΔT, severity and GPS coordinate – sorted by urgency so your team works through the critical cases first.

View a sample report
M-117 Bypass diode Faulty
M-203 Hotspot Warning
M-041 Junction box Warning
M-258 Cell Monitor
Standards & method

Tested to recognised engineering standards

The inspection follows DIN IEC/TS 62446-3 (VDE V 0126-23-3) – outdoor infrared thermography – and the VATh guideline on electrical thermography. Capture parameters are documented and the analysis is signed off by a certified PV service technician.

IEC TS 62446-3 VDE V 0126-23-3 VATh electrical thermography Certified analysis
Analysis signed off by a certified PV service technician
Method at a glance
Radiometric IR camera (DJI M3T)
Photogrammetric 3D reconstruction
AI-assisted module segmentation & classification
Pixel-level hotspot analysis, normalised to 1000 W/m²
Monte Carlo estimate of power degradation
Sign-off by a certified PV service technician
Pricing

No subscription. No hidden costs. Just results.

You pay per inspection – transparent fixed prices, payable straight from the request form.

Rooftop system

€119 / inspection

excl. VAT · for systems up to 100 kWp

Full thermography inspection report (PDF)
Interactive 3D model & 2D overview maps
GPS coordinates for every faulty module
Health score & lost-yield estimate
Report in 24–72 h
to IEC TS 62446-3 & VATh

Commercial & ground-mount

from €250 / inspection

excl. VAT · up to 1 MWp, then +€150 per additional MWp

Everything in the rooftop inspection
For ground-mount & commercial systems
String analysis (mismatch, open/short-circuited strings)
Handover inspection for new systems
Prioritised turnaround
Individual volume pricing on request

All prices net, excl. 19% VAT. The exact amount is calculated from your kWp figure in the form and shown before payment.

FAQ

Frequently asked questions

Especially then. Studies by Kiwa PI Berlin show that 3.36% of modules have defects ex works – on top of that come transport damage and installation faults such as open strings. A handover inspection documents the initial condition and secures your warranty claims against manufacturer and installer.

A drone with a radiometric thermal camera, for example a DJI Mavic 3T, Matrice 4T or Matrice 4TD. You don't need to be a thermography expert – we guide you step by step.

Yes, you fly it yourself following our illustrated guide – with free phone support. Fully automatic flight-path generation is coming shortly.

Usually 24–72 hours after you upload the imagery.

DIN IEC/TS 62446-3 (VDE V 0126-23-3) for outdoor infrared thermography, plus the VATh guideline on electrical thermography.

Yes. Rooftop and ground-mount systems are both supported; the C&I rate from €250 applies to ground-mount and commercial systems.

Health score, categorised findings per module, likely causes and a lost-yield estimate in €/year – plus the interactive 3D model, 2D maps and GPS coordinates for every flagged module.

Straight from the request form: the price is calculated from your kWp figure and payment runs through Stripe (card, SEPA direct debit and others). We only start the analysis once payment is confirmed – your imagery is already safely with us by then.

Take your PV maintenance airborne

Request your first thermography inspection – standards-compliant, within 24–72 h, including every tool you need for the repair.

+49 351 896 92 12 0

[email protected]