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National Renewable Energy Laboratory

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  1. api-umbrella api-umbrella Public

    Open source API management platform

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  2. EnergyPlus EnergyPlus Public

    EnergyPlus™ is a whole building energy simulation program that engineers, architects, and researchers use to model both energy consumption and water use in buildings.

    C++ 1.2k 427

  3. OpenStudio OpenStudio Public

    OpenStudio is a cross-platform collection of software tools to support whole building energy modeling using EnergyPlus and advanced daylight analysis using Radiance.

    C++ 531 211

  4. SAM SAM Public

    System Advisor Model (SAM)

    C++ 368 186

  5. floris floris Public

    A controls-oriented engineering wake model.

    Python 236 172

  6. OpenOA OpenOA Public

    This library provides a framework for assessing wind plant performance using operational assessment (OA) methodologies that consume time series data from wind plants. The goal of the project is to …

    Jupyter Notebook 198 75

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Showing 10 of 676 repositories
  • openstudio-ee-gem Public
    NREL/openstudio-ee-gem’s past year of commit activity
    Ruby 2 7 5 3 Updated Apr 1, 2025
  • ssc Public

    SAM Simulation Core (SSC) contains the underlying performance and financial models for SAM

    NREL/ssc’s past year of commit activity
    C++ 82 BSD-3-Clause 105 31 5 Updated Apr 1, 2025
  • EnergyPlus Public

    EnergyPlus™ is a whole building energy simulation program that engineers, architects, and researchers use to model both energy consumption and water use in buildings.

    NREL/EnergyPlus’s past year of commit activity
    C++ 1,205 427 896 38 Updated Apr 1, 2025
  • resstock Public

    Highly granular modeling of residential building stocks at national, regional, and local scales using OpenStudio/EnergyPlus.

    NREL/resstock’s past year of commit activity
    Ruby 120 78 68 (1 issue needs help) 18 Updated Apr 1, 2025
  • scikit-sundae Public

    Python bindings to SUNDIALS differential algebraic equation solvers

    NREL/scikit-sundae’s past year of commit activity
    Python 3 BSD-3-Clause 7 0 0 Updated Mar 31, 2025
  • ComStock Public

    National scale modeling of the U.S. commercial building stock supported by U.S. DOE, LADWP, and others and maintained by NREL

    NREL/ComStock’s past year of commit activity
    Ruby 38 26 47 19 Updated Mar 31, 2025
  • fastsim Public
    NREL/fastsim’s past year of commit activity
    Python 26 Apache-2.0 14 3 12 Updated Mar 31, 2025
  • OpenOA Public

    This library provides a framework for assessing wind plant performance using operational assessment (OA) methodologies that consume time series data from wind plants. The goal of the project is to provide an open source implementation of common data structures, analysis methods, and utility functions relevant to wind plant OA.

    NREL/OpenOA’s past year of commit activity
    Jupyter Notebook 198 BSD-3-Clause 75 19 0 Updated Mar 31, 2025
  • OpenStudio-HPXML Public

    Modeling of residential buildings in EnergyPlus using OpenStudio/HPXML.

    NREL/OpenStudio-HPXML’s past year of commit activity
    Ruby 51 24 113 (1 issue needs help) 24 Updated Mar 31, 2025
  • floris Public

    A controls-oriented engineering wake model.

    NREL/floris’s past year of commit activity
    Python 236 BSD-3-Clause 172 70 17 Updated Mar 31, 2025
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