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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++ 367 185

  5. floris floris Public

    A controls-oriented engineering wake model.

    Python 237 172

  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 673 repositories
  • celavi Public

    Codebase for the Circular Economy Lifecycle Assessment and VIsualization (CELAVI) modeling framework.

    NREL/celavi’s past year of commit activity
    Python 13 GPL-3.0 15 13 1 Updated Mar 23, 2025
  • SAM Public

    System Advisor Model (SAM)

    NREL/SAM’s past year of commit activity
    C++ 367 BSD-3-Clause 185 75 6 Updated Mar 23, 2025
  • lk Public

    LK (Language Kit) is a simple but powerful scripting language that is designed to be small, fast, and easily embedded in other applications. The core LK engine, including lexical analyzer, parser, compiler, and virtual machine is only dependent on the Standard C++ Library (STL), making it extremely lightweight and portable.

    NREL/lk’s past year of commit activity
    C 33 BSD-3-Clause 28 0 0 Updated Mar 23, 2025
  • foundational-industry-energy-data Public

    The Foundational Industry Energy Dataset (FIED) is a unit-level characterization of energy use in the U.S. industrial sector.

    NREL/foundational-industry-energy-data’s past year of commit activity
    Python 5 6 6 1 Updated Mar 23, 2025
  • gaps Public

    Geospatial Analysis Pipelines (GAPs) is a framework designed to scale single-location geospatial models to a High-Performance Computing (HPC) environment.

    NREL/gaps’s past year of commit activity
    Python 2 BSD-3-Clause 8 14 0 Updated Mar 22, 2025
  • openstudio-standards Public
    NREL/openstudio-standards’s past year of commit activity
    Ruby 89 65 56 11 Updated Mar 22, 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++ 1,204 427 896 36 Updated Mar 22, 2025
  • 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.

    NREL/OpenStudio’s past year of commit activity
    C++ 531 211 196 10 Updated Mar 22, 2025
  • OpenStudio-ERI Public

    Energy Rating Index (ERI) calculation via OpenStudio/EnergyPlus.

    NREL/OpenStudio-ERI’s past year of commit activity
    Ruby 21 17 6 5 Updated Mar 22, 2025
  • HOPP Public
    NREL/HOPP’s past year of commit activity
    Python 26 BSD-3-Clause 54 62 (1 issue needs help) 1 Updated Mar 22, 2025
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