@brunopostle I did a bit research. #Revit has an extension for #energymodeling and options for #gbXML export through #Dynamo. #Rhino has #Honeybee and #Ladybug as energy extensions to #Grasshopper. #BIMServer can extract geometry from #IFC and serialise it as gbXML. #IDA-ICE imports IFC directly. What about #TopologicSverchok, can it extract geometry and export it as gbXML?
Comunicación FreeCAD - BIMServer

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Oh and FYI #FreeCAD has #BIMServer integration but I don't know how up to date it is.

Have you ever seen #BIMServer running before? It's an #opensource #bim platform.

Does some cool things like keeping revisions, automatic model checking, IFC QA analysis, and has various APIs.

With some maturity, it could be a strong competitor to things like Aconex, BIM360, and iTwoCX.