Groundhog is a SketchUp extension for performing lighting analysis easily, using Radiance.

Groundhog is an Free and OpenSource extension for performing lighting analysis within SketchUp. Groundhog uses Radiance as its calculation engine, and allows performing several static and climate based daylight analysis.


We invite you to check the Groundhog online resources (! More than 500 high quality construction materials, several objectives and a forum for asking and answering questions. All without leaving SketchUp.


Thinking in expert Radiance users, Groundhog also allows exporting the whole project, including illums, luminaires, workplanes, windows and materials, so you can use them for research or other.



2.53 MB
Groundhog (0.9.6); March 29, 2016
Number of Views: 
SketchUp Compatibility: 
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Extensions: 1
Our SketchUp extensions are mainly developed according to our own needs, but we are happy to share some of them with the world.
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