A key feature of ArchiCAD 16 is the built-in energy evaluation functionality, which has been done by integrating the entire functionality of EcoDesigner, which was a plug-in earlier, with the application.

The built-in Energy Evaluation functionality of ArchiCAD 16 is similar to the former standalone EcoDesigner product, but is based on entirely new technology which allows architects to perform reliable dynamic energy evaluation of their BIM model within ArchiCAD, relying on BIM geometry analysis and accurate hour-by-hour online weather data of the building’s location.

You can read an in depth review of ArchiCAD 16 here on AECBytes ..

For more information go also to http://www.graphisoft.com/products/archicad/