We frequently get questions on how best to draw in solar panels.
Step One
Open your project and go to the "Intended Works" section and click on "Parcel List"
Step Two
To add in solar panels, select "Developed Land, sealed surface" (the top option!)
Step Three
Draw in the solar panels, showing the total area of land covered by the panels (the reason for this is that it is precautionary, even if the solar panel doesn't completely cover the ground / there is space underneath the panel, the habitat will be degraded by the solar panel, so covering the area in total is a smart first step.