PV Module Power Measurements

Manufacturers, investors, power plant operators and private users depend on precise and transparent power rating to ensure PV module performance expectations and protect return of investment. PV modules tested and certified through independent third-party calibration according to recognized international standards increase consumer confidence and strengthen brand image in competitive global markets.

We provide precise power measurement services according to IEC 60904 series standards as well as the unique “Power Controlled” test mark. In the in-house developed standard 2 PfG 1795, comprehensive requirements are set in order to verify the power rating of PV modules is precise and correct on an ongoing basis. With our Measurement Uncertainty Assessment service, we help module manufacturers identifying their rating tolerances. Our experts conduct state-of-the-art performance verification and reference module/pyranometer calibration to prove reliable functionality and optimal performance. We help qualify solar simulators for use in the production of PV modules and provide simulator manufacturers recognized certification of their simulator class. Our “Power Controlled” certification of PV modules is specifically designed to ensure accurate and trusted data sheet information on which consumers can rely.

Our international network of experts is ready to serve you with our extensive services portfolio from a single source at any time, anywhere in the world.

Verify the true power of your PV modules with precise performance measurement!

Our power measurement services provide you results with the highest possible accuracy enabling you to significantly boost confidence in your product for a stronger customer trust. We support you in making sure your performance claims are realistic and reliable and we help you to reduce warranty compensation with precise labeling. We qualify and certify solar simulators to ensure minimal uncertainty. Our experts work with high precision equipment so that you can meet strict quality standards requiring established calibration protocols.

Our “Power Controlled” certification provides buyers of PV modules the transparency they need to drastically lower the cost of any imposed third-party verification testing.

We conduct precise Reference Module calibration, so that you are able to sell each watt for its true value at the appropriate price.

The power rating of photovoltaic (PV) modules is the most important factor influencing the determination of your module price.

Our Power Controlled certification process is broken into the following four tasks:

• Task 1 – The introduction and precise calibration of suitable reference modules used for flasher calibration in the production line.
• Task 2 – On-site measurement procedure assessment and classification measurements for each solar simulator in the production line.
• Task 3 – Verification measurements performed in our accredited test laboratory on test samples randomly selected from each production line.
• Task 4 – Follow-up Power Controlled certification procedures to include annual re-certification of reference modules (Task 1), annual re-qualification of solar simulators (Task 2) and the periodical verification of test samples (Task 3).

Tested modules are awarded certification if the average measuring discrepancy between the manufacturer and the testing laboratory remains below 2 %, and if the average discrepancy between power output measured in the laboratory and the maximum output power displayed on the type label is less than or equal to 1.5 %.

Golden modules for each PV module power class and design should be calibrated at least once per year to attain a calibration report or Power Controlled certification.

As one of the most renowned laboratories in the world, we are the market leader in solar technology testing and certification. Our experts precisely assess all PV technologies and provide results of the highest accuracy. We issue optional reminders for expeditious scheduling of your re-calibration, -qualification, or –certification. Our interdisciplinary network of PV specialists conducts state-of-the-art services reflective of our internationally trusted and respected brand. We are ready to serve you from a single source at any time, anywhere.