CalLab PV Cells / CalLab PV Modules

The precise measurement of solar cells and modules is of crucial importance in solar technology or photovoltaics. As one of the world’s leading laboratories, the photovoltaic calibration laboratory at the Fraunhofer ISE (CalLab) provides measurement services in this field. We measure all types of solar cells and PV modules with precision and reliability, in accordance with international standards. We also develop special precision measurement instruments for this purpose.

Our state-of–the-art instrument technology enables us to meet the highest standards of quality and guarantee dependable measurement results at all times. International round robin tests are carried out on a regular basis.

We measure your solar cells and PV modules with great precision, quickly, reliably and at low cost.


CalLab PV Cells

CalLab PV Cells offers the calibration / measurement of solar cells from a wide range of PV technologies.


CalLab PV Modules

Our service offer ranges from the calibration of single cells and modules to customized tasks such as the calibration of bifacial modules.


Reference Cells

WPVS Reference Cells for primary or secondary calibration, Indoor and Outdoor Reference Cells.

On this topic from our research blog »Innovation4E«:

Callab PV Cells: 30 Years of High Precision Measurement in Freiburg

Blog post by Klaus Heidler

Dr. Klaus HeidlerIf you want to know the efficiency of a solar cell exactly, it is likely that you will land in Freiburg, Germany sooner or later. For 30 years high-precision reference solar cells – and for almost 25 years reference modules – have been measured at the CalLab PV Cells of Fraunhofer ISE. Researchers, producers and plant operators order calibrated cells to have their own benchmarks. It is comparable to the “model meter“ in Paris: If you have one copy of that standard, you can always check your in-house measurement equipment against it. Since CalLab PV Cells is internationally renowned and certified, any research value published with the certificate of Fraunhofer ISE will automatically be more credible. CalLab PV Cells was founded in 1986 with three co-workers. Today 30 employees calibrate about 2,500 solar cells and 5,000 solar modules each year.