Portable on-site inspection methods are helpful tools to identify drivers for underperforming PV power plants.
This fact sheet outlines 10 such methods:
1. Drone-mounted imaging
2. Mobile PV test centre
3. Plant testing vehicle
4. Dark I-V testing
5. Daylight I-V testing
6. UV fluorescence imaging
7. Daylight electroluminescence imaging
8. Outdoor photoluminescence imaging
9. Spectroscopic methods
10. Electrical impedance spectroscopy
The fact sheet includes a link to download the full report on this topic.