Groundhog (0.9.6) For Sketchup
IGD, a renowned consultancy company that works for enhancing the interior comfort and energy performance of buildings, has launched Groundhog for Sketchup. This sketchup extension supports SketchUp 2015, SketchUp 2016, SketchUp 2017.
This free and open source extension can be used for executing lighting analysis inside SketchUp. With the use of radiance as its calculation engine, this sketchup plugin facilitates accomplishing various static and climate based daylight analysis.
It is also possible to export the entire project with groundhog along with illums, luminaires, workplanes, windows and materials as well as utilize them for research or other works.
In groundhog, all actions are performed by doing "right click" and in the menu Extensions -> Groundhog.
Explore through Groundhog online resources (www.groundhoglighting.com/app)
Go through the following link to download the most updated version of groundhog extensions.sketchup.com