This article provides an in-depth explanation of the different visual cause classifications in our Solar Inspection Pro and Essential data product. If you are looking for an overview of the Solar Inspection Pro and Essential data product, please check out the Solar Inspection Pro and Essential data product page.

Visual (RGB) Causes Overview


A problem easy to solve via cleaning, you may see something on the panel in RGB and usually accompanied by a hotspot in the thermal data. Sometimes you may not see anything in the RGB image, but you are able to determine that it's soiling because of the pattern of the hotspots at the bottom of a panel. Due to the panel's slope, the dirt will tend to settle in the bottom sections of the panel resulting in a build-up.

Physical or Physical (Suspected)

When there is an obvious issue on the thermal data, but nothing visible on the RGB data we mark the cause of this anomaly as a physical issue. This cause is most common in anomalies such as bypasses where there is most likely a physical defect within the panel that needs to be fixed.


If there is vegetation visible in the RGB orthomosaic at the same location as a hotspot on the thermal layer, the cause of the anomaly will be marked as vegetation. An important distinction is that this cause is used for small obstructions to panels, for example, a tree creating a shadow over the panel would not be vegetation, but shadowing.


If there is a structure or large object that is creating shading on the panels and displays as a hotspot on the thermal data, the cause of the anomaly will be marked as shadowing. It's important to note that this shadowing may not be there all the time, so our analysis will be based on the point in time in which the images were captured.


This anomaly cause is reserved for when markings on the panel are very visibly a case of bird droppings, these are also much harder to clean than soiling issues.

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