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Software

See the table below for our open-source software offerings. 

For the most current listing of NREL-developed open-source software, see U.S. Department of Energy Office of Scientific and Technical Information's DOE CODE database.

Commercial Licensing

Explore more than 250 copyrighted software tools available for licensing via the Department of Energy's Lab Partnering Service.


Spawn

May 7, 2020, 18:00 PM
Spawn is a next-generation building simulation engine that builds on the strengths of NREL's EnergyPlus engine. It adds advanced HVAC and controls modeling capability by incorporating the Modelica equation-based modeling language. In effect, Spawn is a hybrid of EnergyPlus and Modelica, with some new software between the components to provide a seamless end-user experience.
Title : Spawn
Url : https://github.com/NREL/Spawn
Software Id : 45140
Categories :
  • Buildings
  • C
  • C++
  • Software Categories

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Last Updated July 8, 2025