For designers looking to create more sustainable buildings and homes, the folks at IES (http://iesve.com)
have come up with a plugin for SketchUp that allows you to run an
energy analysis right within your SketchUp model. And the plugin is
completely free! Join Mike in this first part of a 2-part series as he
shows you how to run an energy analysis on a massing model using the
IES plugin for SketchUp.