Very interesting test with the Solar Radiation Technology Preview plug-in for Revit 2011: “There’s been a Solar Radiation “Technology Preview” plug-in for Revit available up on Autodesk Labs for a while now. I’ve been curious about it, but haven’t had an idea to apply to it till now. So I mixed up a little form study of Foster and Partners’ London City Hall to give it a test spin. Foster’s design is a nice test case as the building form is directly driven by some relatively simple principles about passive solar design. In a temperate zone, maximize winter solar gain and minimize peak summer sun exposure. Through some clever geometric arrangements, the south face shades itself in the summer, and is basically fully exposed in the winter.”

See a little demo video below or go to buildz to read it all ..