VIP-Core Dynamic Simulation Engine (Energy Evaluation)


The VIP energy simulation software module integrated in ARCHICAD (a.k.a. engine) is a result of more than 20 years of research and commercial use. It relies entirely on dynamic models, in which every model is broken down to a level where facts and behavior are known. Each component group is analyzed separately. The calculation is repeated every hour. The accuracy of each model has been validated and verified against real buildings under real usage. In calculating a building’s energy consumption, the program utilizes known or measured facts about all parts of the energy flow.

VIP-Energy is produced by Structural Design Software in Europe AB 

For technical information about VIP-Energy and for a more detailed explanation of the different calculating models, see

Validation of Calculation Accuracy

Energy Evaluation uses the same simulation kernel as EcoDesigner STAR add-on for ARCHICAD. This kernel is validated with ANSI/ASHRAE Standard 140-2007: Standard Method of Test for the Evaluation of Building Energy Analysis Computer Programs.

Note: To produce code-compliant energy simulation results, the expert user interface of EcoDesigner STAR is necessary.

The ASHRAE Standard 140 test documentation for EcoDesigner STAR will be available on the official product website, following the add-on’s release.

The stand-alone VIP Energy product, which also uses the same simulation kernel as Energy Evaluation in ARCHICAD and EcoDesigner STAR, is also validated with the following tests:





Validation results can be read at