Hi@htaheri
You can import SketchUp model to Rhino using trimmed surface or mesh. Group or compotens will convert to mesh group in Rhino. So you can do sunhour /radiation/daylighting analysis using meshes.
You can follow this discussion
Or my example shared on Hydrashare website
http://hydrashare.github.io/hydra/viewer?owner=ymg2007&fork=hydra&id=Modeling_Tree_In_Radiation_Analysis__Using_Two_Methods&slide=0&scale=1&offset=0,0