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Identifying defective solar modules –
with high-precision technology

We use high-precision measuring technology to detect damage and impairments to PV modules.

Take a 360° look at the SUNLAB laboratory and our technical equipment in order to see our own performance and focus for yourself.


People & Technology

The expert technical competence of our team is supported by our high-tech facilities. Thanks to their many years of experience in the photovoltaic sector, our employees are not only experts on PV modules, they are also aware of all the possible weaknesses that may occur in the materials or design. This enables us to identify defective solar modules – and verify damage.

Below you will find an overview of our technical equipment:


Performance measurement
Have your module irradiated with a radiation intensity of 1000 W/m² in the test. more...

Load table:
Measure your module deflection (up to 5400 Pa). more...


Insulation measurement
We check for leakage current by immersing the PV module in a measuring tank. more...

With the electroluminescence process, we can detect damage at cell level within the module. more...


Climatic chamber
In a climatic chamber, we can perform temperature cycling tests and humidity cycling tests. more...

Low light measurement
We use different filters to measure in low light from 100 W/m² to 1100 W/m². more...


Here we measure the requirement for the qualification of a PV module for the operation of load generated from the system voltage. more...

The following information and codes will help you to find us in search engines:

Check if the performance of the modules in a system has dropped. Where are the faults when the electricity no longer flows as desired? This is often due to the cells of the system. Defective modules noticeably reduce the performance of a system. In addition to the inverter, the modules account for a large share of the performance. A test in SUNLAB quickly tells you whether the modules in your system are defective or not. The current flow is crucial.

Other search engine-relevant terms:

Among other things, SUNLAB uses an EL camera. This makes malfunctions in solar cells clearly visible. It can then be determined whether the operator or system operator needs to replace the modules. The output of a photovoltaic system will be reduced if a string is defective. After long use, it is also interesting for manufacturers to know whether the solar energy systems on the roof are working as planned. Solar cell panels less voltage on photovoltaic systems. Thermography is not included in our testing.