Outdoor Module Testing Facility

SERIS’ Outdoor Module Testing facility on a roof-top at NUS


SERIS’ Outdoor Module Testing (OMT) facility provides high-precision outdoor performance testing of PV modules in the tropical climate of Singapore. Some of the world leading PV manufacturers have sent their modules for testing under the hot and humid conditions found in Singapore. To date, through six years of working with clients and carrying out R&D projects, SERIS has achieved data acquisition rates of more  than 99%, proving the robustness and reliability of its equipment.

Before being installed at SERIS' OMT facility, each PV module undergoes "flash testing" at standard test conditions (STC), pre-conditioning for 5 days (outdoor exposure) for silicon wafer-based technologies or as per manufacturers’ recommendation for the various thin-film technologies, followed by a second flash testing at STC. This procedure not only determines the initial degradation and/or the stable power generation, but also leads to a reliable "actual" wattage of the modules, which is then used as "baseline" (rather than the "nominal" name plate value) for any energy yield data that relate to the installed PV capacity.

Reported data (available in intervals as short as 10 seconds) include:

  • Irradiance in-plane (using calibrated c-Si sensors)
  • Ambient temperature
  • Module temperature (measured at the backsheet)
  • DC characteristics: Voc, Vmpp, Isc, Impp, Pmpp
  • Cumulative energy yield

Additional environmental parameters (e.g. wind speed and direction, global irradiance in horizontal plane and relative humidity) are also measured.

In addition to the results obtained on their own modules, customers can also select to get access to additional benchmark comparisons of up to 8 different commercially available PV module technologies (several thin-film technologies and several types of silicon wafer-based technologies).

For further information, please contact:

Aung Myint KHAING
aung.khaing@nus.edu.sg