When you perform an energy analysis on a building model, the area reported for analytical surfaces differs from the area reported for building elements in the model.
The difference in size between the analytical surfaces and the model surfaces can be +/- 10% or more.
Issue: The areas of analytical surfaces used in the energy analysis are approximations of the surfaces of the model elements. The automatically generated energy model may contain gaps between analytical surfaces and jagged edges. These features of the energy model may look unusual, but they do not affect the accuracy of the results of the energy simulation.
In the Energy Settings dialog, the Analytical Surface Resolution option allows you to specify how precisely analytical surfaces match the surfaces of the building elements they represent. A smaller resolution value may align the analytical surface areas more closely with the surface areas of building elements. However, the change will result in an energy simulation that takes longer to complete but is not noticeably more accurate.
Solution: This issue does not require any action.