Here are the Building Technologies Office's most recent projects in the area of software tools. See also past projects.

August 28, 2014

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EnergyPlus

EnergyPlus is DOE's open-source state-of-the-art whole building energy simulation engine.

November 16, 2018

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EnergyPlus 10X

A team led by LBNL and ORNL is undertaking a three-year effort to reduce EnergyPlus execution time by a factor of 10!

August 28, 2014

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OpenStudio

OpenStudio is an open-source software development kit (SDK) for energy modeling with EnergyPlus.

October 7, 2014

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Radiance

Radiance is a set of open-source lighting simulation tools capable of accurately calculating lighting metrics and rendering photorealistic scenes.

July 24, 2023

ResStock Core

Lead Performer: National Renewable Energy Laboratory – Golden, CO

October 8, 2014

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Spawn-of-EnergyPlus (Spawn)

Spawn is a next-generation BEM-controls engine based on open-standards for co-simulation (FMI) and equation-based modeling (Modelica).