As part of an audit of this 4 year old commercial solar PV system, we used a UAV (drone) carrying a top of the range thermal imaging camera.
This was able to help us find various anomalies that were lying undetected within the panels. This included items such hot spots from dirt build up on the bottom of the module frames, and even 33% reduction of output of modules where the string diodes had failed.
This will have been dragging the systems performance down considerably, so i was good to find the problems sorted early on and get the panels changed under warranty.
The system is now fighting FIT ready for many more years of optimised generation.
Please leave as much details as you can. We will email you a guide proposal based on your business situation to give you an idea if you qualify.