With this in mind Greenspace Research are currently beta testing a building energy analysis plugin known as 'Demeter' for SketchUp.
The YouTube movie below provides an insight:
The plugin is without question a good idea providing a quick and easy way to view various datasets and graphs relating to a buildings energy credentials.
The system is based around the Green Building XML schema, referred to as “gbXML”, developed to facilitate the transfer of building information stored in CAD building information models.
A release is scheduled in the next couple of weeks, we'll let you know when its available for download.
For more info take a look at the Greenspace Research home page.