Conference Paper open access publication

Spectroradiometry in PV: how inter-laboratory comparison may improve measurement accuracy

Institute of Electrical and Electronics Engineers (IEEE),

Volume 00, 2018

DOI:10.1109/pvsc.2018.8547975, Dimensions: pub.1110367732,



  1. (1) National University of Singapore, grid.4280.e
  2. (2) Joint Research Centre, grid.434554.7
  3. (3) Imperial College London, grid.7445.2
  4. (4) European Academy of Bozen, grid.418908.c
  5. (5) Loughborough University, grid.6571.5
  6. (6) National Institute for Aerospace Technology, grid.15312.34
  7. (7) University of Extremadura, grid.8393.1
  8. (8) PI Photovoltaik-Institut (Germany), grid.493452.d
  9. (9) Physikalisch-Technische Bundesanstalt, grid.4764.1
  10. (10) Italian National Agency for New Technologies, Energy and Sustainable Economic Development, grid.5196.b
  11. (11) Austrian Institute of Technology, grid.4332.6
  12. (12) Radboud University Nijmegen, grid.5590.9
  13. (13) Ricerca sul Sistema Energetico (Italy), grid.79546.39
  14. (14) University of Cyprus, grid.6603.3
  15. (15) EKO Europe, The Hague, 2521 AL, Netherlands
  16. (16) University of Applied Sciences and Arts of Southern Switzerland, grid.16058.3a
  17. (17) Technical University of Denmark, grid.5170.3, DTU


Spectroradiometry is a key metrological topic for accurate testing of photovoltaic (PV) devices, particularly relevant both for indoor testing on solar simulators and for outdoor testing. The relevance of accurate measurements of solar spectral irradiance has led the most renowned European solar PV test centres to take part to a series of International Spetroradiometer Intercomparisons that has taken place every year so far since 2011 in various localities in the Mediterranean Basin. This paper revisits the performance of participant laboratories and highlights the importance of inter-laboratory comparisons, showing the possible improvements in measurement reproducibility.

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