Make sure you have the things listed below before starting:
An Energy simulation tool that enables exporting your model to gbXML
One Click LCA account and license with Business features to be able to import data
How to import your gbXML
Step 1: Open your model in the software for energy simulation you use and export the model into gbXML format.
Here is the list of software tools that support gbXML.
Step 2: The gbXML files will be imported via the 'Import Excel or gbXML file' choice in the user interface
Step 3: Add missing data
If your model contains missing structures that are necessary to include in your LCA, add them manually. Energy models will contain all required parts of the enclosure as well as the floors and roofs. However, they often do not contain structures, like beams and columns. Go to the main page of your project, click on the design and choose the Building materials question form. Add missing data there.