Bim Based rating of urban and architectural surfaces to refine Solar Potential Analysis.

The study exposes an analysis of effective transformability of building surfaces on detailed information models developed at the architectural scale, then transfer this information from building BIM models to simplified urban models, using a transformability coefficient as a moderating factor to estimate the solar potential. The process model illustrated in the study addresses the disciplinary issues related to the calculation of the solar potential as well as the issues of information standardization useful for the activation of these tools in an openBIM environment interoperable with 3D GIS file formats.