1. National Renewable Energy Laboratory (NREL), Golden, CO, USA
2. Sandia National Laboratories (SNL), USA
3. Photovoltaic Testing Laboratory-Arizona State University (PTL-ASU), USA
4. Florida Solar Energy Center (FSEC), USA
5. European Commission, Directorate General - Joint Research Centre, (IES-RE-ESTI), European Union
6. Laboratorio Energia Ecologia Economia (LEEE), Switzerland
7. TÜV Immissionsschutz und Energiesysteme GmbH, Germany
8. Institute of Solar for Energy Systems (Fraunhofer ISE), Germany
9. Japan Electrical Safety & Environment Technology Laboratories (JET), Japan
10. National Institute of Advanced Industrial Science and Technology (AIST), Japan