Here are the Building Technologies Office's most recent projects in the area of software tools. See also past projects.
EnergyPlus is DOE's open-source state-of-the-art whole building energy simulation engine.
A team led by LBNL and ORNL is undertaking a three-year effort to reduce EnergyPlus execution time by a factor of 10!
OpenStudio is an open-source software development kit (SDK) for energy modeling with EnergyPlus.
Radiance is a set of open-source lighting simulation tools capable of accurately calculating lighting metrics and rendering photorealistic scenes.
Lead Performer: National Renewable Energy Laboratory – Golden, CO
Spawn is a next-generation BEM-controls engine based on open-standards for co-simulation (FMI) and equation-based modeling (Modelica).