OpenStudio is a cross-platform (Windows, Mac, and Linux) collection of software tools to support whole building energy modeling using EnergyPlus and advanced daylight analysis using Radiance.  OpenStudio is an open source project to facilitate community development, extension, and private sector adoption. OpenStudio includes graphical interfaces along with a Software Development Kit (SDK).  

The previous version of OpenStudio (now called the Legacy OpenStudio Plug-in) only included the Google SketchUp Plug-in.  If you are still interested in the previous version, please download from the EERE website.  The version supplied on this website includes new and enhanced functionality.

The new OpenStudio graphical applications include the updated Google SketchUp Plug-in, SystemOutliner, RunManager, and ResultsViewer.  The Google SketchUp Plug-in is an extension to Google’s popular 3D modeling tool that adds EnergyPlus context to the SketchUp program.  The Plug-in allows users to quickly create geometry for EnergyPlus using the built-in functionality of Google SketchUp including existing drawing tools, integration with Google Earth, Building Maker, and Photo Match.  SystemOutliner is a graphic HVAC design tool. RunManager manages simulations and workflows.  ResultsViewer enables browsing, plotting, and comparing EnergyPlus output data, especially time series.

OpenStudio allows building researchers and software developers to quickly get started through its multiple entry points, including access through C++, Ruby, and C#.