Outdoor Module And System Testing Facilities In Different Climates

As part of the “TruePowerTM Alliance”, which was initiated and is driven by SERIS, the institute operates high-precision outdoor testing facilities for PV modules and PV systems in different climate zones. For energy yield assessments, and eventually investment decisions, knowledge of the actual generated energy per year rather than the rated peak power under standard test conditions (STC) in the laboratory is much more relevant. However, the actual energy output depends strongly on the geographic location of the system. Therefore, SERIS has implemented outdoor testing facilities on both module and system level in the three most important climate zones: temperate (here: Germany), tropics (here: Singapore) and desert (here: Australia). Some of the world’s leading PV manufacturers are collaborating with SERIS and are field-testing their modules within the TruePowerTM Alliance.

SERIS applies its self-developed data acquisition system at the TruePowerTM sites. To date, through seven years of working with clients and carrying out R&D projects, SERIS has achieved outstanding data acquisition rates of more than 99%, proving the robustness and reliability of its equipment.

SERIS' Outdoor Module Testing facility in Singapore (on rooftop at NUS)

SERIES' Outdoor Module and System Testing facility in Alice Springs, Australia


The various PV module and system data (available in intervals as short as 10 seconds) include:
  • Module temperature (measured at the backsheet)
  • DC characteristics: Voc, Vmpp, Isc, Impp, Pmpp
  • Cumulative energy yield
In addition, every site location has a state-of-the-art meteorological station, using the following equipment:
  • Pyronometer(horizontal and in-plane)
  • Si sensor (horizontal and in-plane)
  • Pyrheliometer
  • Spectro-radiometer
  • UV radiometer
  • Ambient temperature
  • Other meteorological sensors (wind speed & direction, humidity, rainfall)

For further information, please contact:

Dr Mridul SAKHUJA
mridul.sakhuja@nus.edu.sg