Preview the new BCL

To avoid data loss, content owners should download their content before October 1st, 2021 when the site will be archived. Read through the new Contribute page for information on how to port content over to the new site.

Visit UnmetHours or BCL Discussions if you have any questions.

Building Component Library

The Building Component Library is a repository of building data used to create building energy models. The data are broken down into separate components that represent parts of a building: windows, walls, schedules, and weather information are a few examples.

Search for components by type or keyword and use the facets to narrow down your search. Once you find the components you need, download them and insert them in your energy model.

OpenStudio | Trimble SketchUp Plug-in

OpenStudio includes a free plug-in for the Trimble SketchUp 3D drawing program. The plug-in makes it easy to create and edit the building geometry in your EnergyPlus input files.

You can add building components from this library into your SketchUp files and get more accurate and detailed analysis of your energy use.



Total Components: 48347
The components are designed to provide data to the energy modeler and simplify the process of gathering inputs. The range of components goes from whole buildings to detailed files, like duct sealing components.


Total Measures: 392
Energy saving measures are scripts that have been created to apply an energy conservation measure on an energy model. An example measure is adding overhangs to all south-facing windows in the model.