Most people are aware that flying over solar panels with an infrared camera is a quick and easy way to inspect them. But you also have to consider the depth of which you want to take your inspection. If you are inspecting the panels only, you would still need a regular or (RGB) camera. The anomaly you detect with your Thermal Camera could be mud or even bird droppings. Solar Installations are more than just panels. There is a lot of wiring and connections as well as a sizable junction box. All of these areas should be checked if you are doing a full inspection. Once you are inspecting the backside, a handheld thermal camera would be needed, as most panels would be tilted up and difficult to access with your bird. Just some things to keep in mind if you start thinking Solar.