Supports EnergyPlus 8.2 Update 1

OpenStudio 1.5.4 has just been released with support for EnergyPlus 8.2 update 1

OpenStudio 1.5.0 Release

OpenStudio 1.5.0 is now available for download from the OpenStudio website.
Notable new features include:
  • Upgrade from Ruby 1.8 to Ruby 2.0.
  • Reporting measures can now request output variables from EnergyPlus to ensure that they have the data they need to create plots or make reports. Additionally, units and descriptions can now be added to measure arguments.

OpenStudio now using Ruby v. 2.0

Starting with v. 1.4.1 and higher, OpenStudio uses Ruby v. 2.0.  The SketchUp Plug-in is compatible with SketchUp 2014 only.

OpenStudio 1.3.0 Release

OpenStudio 1.3.0 is now available for download from the OpenStudio website. Development for OpenStudio 1.3.0 has two main focuses:

ORNL Building Technologies Research & Integration Center

Development of OpenStudio Refrigeration.

Ralph Muehleisen

Development of reduced order CEN/ISO monthly energy model.

OpenStudio is moving to GitHub

The OpenStudio source code repository is moving from SVN to GitHub. We are currently in the process of making this change. The SVN repository is still available as read-only. If you would like access to the GitHub source code please setup an account at and email with your GitHub username, and the email used to register.

Thanks for your patience through this process.

The OpenStudio Team.

Jason DeGraw

Development of OpenStudio to CONTAM translator.


Development of a C# IFC to OpenStudio translator and utility program IFCtoEnergyPlus.


Development of gbXML to OpenStudio translator and utility program gbXMLToIdf.