Openstudio 2.9.1 New! Jun 2026

Navigate to the OpenStudio GitHub repository under the "Releases" tab and locate version 2.9.1.

For the energy modeler, OpenStudio 2.9.1 was the vehicle that delivered these engine improvements to the user interface. It ensured that the graphical inputs aligned with the new physics engine, reducing the friction often encountered when transitioning between engine updates. By stabilizing this integration, version 2.9.1 allowed engineers to confidently model complex systems—such as Variable Refrigerant Flow (VRF) systems and detailed daylighting controls—without the fear of engine-level syntax errors that plagued earlier iterations of the software.

Download the appropriate installer for your operating system (Windows .msi or Mac .dmg ). openstudio 2.9.1

The official download location for OpenStudio 2.9.1 is the NREL GitHub releases page: https://github.com/NREL/OpenStudio/releases/tag/v2.9.1

Download the EnergyPlus 9.2.0 installer from the official EnergyPlus GitHub releases page. Navigate to the OpenStudio GitHub repository under the

Overall, OpenStudio 2.9.1 is a comprehensive software tool that offers a wide range of features and capabilities for building energy modeling and analysis. Its benefits, applications, and future developments make it an essential resource for building professionals seeking to improve building energy efficiency and promote sustainability.

The specific or energy code baseline (e.g., ASHRAE 90.1) you need to model? By stabilizing this integration, version 2

(Specifically, Ruby 2.5.5 is standard for the 2.9.x lifecycle). SketchUp Compatibility