Green Building XML

gbXML (Green Building XML) is an open, industry-backed XML schema that lets architects and engineers exchange building data between BIM tools and energy-simulation software.

It is built for design and engineering teams who need to move a model from authoring software into analysis tools without re-entering geometry or space data.

Maintained as a nonprofit standard sponsored by ASHRAE, the US DOE, NREL, and Autodesk, with an open-source schema hosted on GitHub.

Green Building XML Overview

Green Building XML (gbXML) is an open, industry-supported XML schema for exchanging building information between BIM authoring tools and building performance simulation/energy-analysis software. It lets architects and engineers export a building model once and import it into multiple disparate analysis tools without re-entering geometry, surfaces, or spaces. gbXML was originally developed by Green Building Studio, Inc. with funding from the California Energy Commission PIER Program and Pacific Gas and Electric, and was spun off in 2009 into a standalone California nonprofit, Open Green Building XML Schema, Inc. It is sponsored by ASHRAE, the US Department of Energy, the National Renewable Energy Lab, and Autodesk. The schema (current version 8.01) is open-source and hosted on GitHub, with published sample files, validation tools, and test cases. It is widely implemented across the AEC software ecosystem for workflows spanning energy modeling, LEED and code-compliance analysis, and BIM-to-simulation handoff.
Green Building XML (gbXML) is an open, industry-supported XML schema for exchanging building information between BIM authoring tools and building performance simulation/energy-analysis software. It lets architects and engineers export a building model once and import it into multiple disparate analysis tools without re-entering geometry, surfaces, or spaces. gbXML was originally developed by Green Building Studio, Inc. with funding from the California Energy Commission PIER Program and Pacific Gas and Electric, and was spun off in 2009 into a standalone California nonprofit, Open Green Building XML Schema, Inc. It is sponsored by ASHRAE, the US Department of Energy, the National Renewable Energy Lab, and Autodesk. The schema (current version 8.01) is open-source and hosted on GitHub, with published sample files, validation tools, and test cases. It is widely implemented across the AEC software ecosystem for workflows spanning energy modeling, LEED and code-compliance analysis, and BIM-to-simulation handoff.

Green Building XML Pricing

PRICING PLANS
Open Schema|0/free

Green Building XML Frequently asked questions

Yes. gbXML is an open, industry-supported schema maintained by the nonprofit Open Green Building XML Schema, Inc., with no license fee to use or implement it.

Green Building XML Alternatives

See how Green Building XML stacks up against similar tools before you decide.

One Click LCA

One Click LCA is a sustainability platform that helps architecture, engineering, construction, and manufacturing teams measure and reduce environmental impacts. It supports life-cycle assessments, embodied carbon calculations, whole-building analysis, product comparisons, and regulatory reporting. By connecting design data with extensive environmental databases, One Click LCA helps users evaluate alternatives, meet certification requirements, and make informed low-carbon decisions throughout project development.

BHoM

BHoM (Buildings and Habitats object Model) is a free, open-source interoperability framework for AEC engineers, computational designers, and BIM specialists. It provides a shared object model with 1,200+ element definitions and adapters connecting 30+ software packages, including Grasshopper, Dynamo, and Excel. Teams use it to move structural, environmental, and geometric data between design and analysis tools without building custom translators.

GliderBIM

GliderBIM is a Common Data Environment (CDE) for asset owners and AEC professionals to manage project data, models and documentation. It supports open BIM data exchange via IFC and COBie, connecting project teams from design through construction and operation.

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