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Building Energy Modeling

About the portfolio

Building energy modeling (BEM)—physics-based calculation of building energy consumption—is a multi-use tool for building energy efficiency. Established use cases include design of new buildings and deep retrofits, development of whole-building energy efficiency codes and standards (e.g., ASHRAE 90.1) and performance-path compliance with those codes (e.g., ASHRAE 90.1 “Appendix G” Performance Rating Method), beyond-code physical asset rating and labeling (e.g., USGBC’s LEED energy credit), and development of prescriptive design guides (e.g., ASHRAE 50% beyond 90.1 Advanced Design and Retrofit Guides). Emerging uses include design of low-energy building control algorithms, continuous commissioning of building mechanical systems, and dynamic building control for energy optimization or demand response. DOE has been actively involved in BEM research and development since the early 1970s, before its ascension to a cabinet-level department.
Learn more about BTO's building energy modeling portfolio ►


Explore our software and projects

End-Use Breakdown: The Building Energy Modeling Blog

Autodesk Upgrades Insight360 with EnergyPlus Annual Energy Simulations
Autodesk Insight360 allows architects to explore the energy impacts of different design choices as they design. Insight360 uses EnergyPlus to calculate heating and cooling loads and now provides the option of using EnergyPlus to evaluate annual energy impacts. Credit: Autodesk.

At GreenBuild, Autodesk unveils an upgrade to its Insight360 suite of tools that will allow architects to run annual EnergyPlus simulations from within its popular Revit and FormIt design tools.

BetterBricks Leverages DOE Tools to Spark Deep Energy Retrofits
Spark is a free online tool that performs technical and financial analysis for building renewal projects, upgrade projects for leased commercial office buildings that target at least 35% annual energy savings. Credit: BetterBricks.

NEEA (Northwest Energy Efficiency Alliance) is using EnergyPlus and OpenStudio to help drive building renewal, a real estate strategy that targets deep energy savings in leased office buildings.