What is shading on a solar PV system?
Can anyone explain what shading is? Is it the placement of the panels relative to the sun?
This is promotional video for a module manufacturer, but it does a good job showing the impact of shading on solar panels. If you can look past the promo, I think you it will help explain the issue.
Here is another classic video that also shows the impact of shading on solar panels. You gotta love this low tech video.