A method of determining one or more shading conditions associated with a structure is provided. A method may include determining an azimuth of a reference roof edge relative to an orientation of a first image of a structure. The method may further include determining a relative azimuth of the reference roof edge from a lower hemisphere of a second, different image captured proximate the structure. In addition, the method may include determining one or more shading conditions associated with the structure based on the azimuth of the reference roof edge and the relative azimuth of the reference roof edge.