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National Renewable Energy Laboratory

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  1. api-umbrella api-umbrella Public

    Open source API management platform

    Ruby 2.1k 342

  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++ 1.3k 441

  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++ 544 215

  4. SAM SAM Public

    System Advisor Model (SAM)

    C++ 392 189

  5. floris floris Public

    A controls-oriented engineering wake model.

    Python 243 172

  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 203 80

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Showing 10 of 695 repositories
  • openstudio-standards Public
    NREL/openstudio-standards’s past year of commit activity
    Ruby 91 67 60 8 Updated Jun 22, 2025
  • COMPASS Public

    INFRA-COMPASS is a tool that leverages Large Language Models (LLMs) to create and maintain an inventory of state and local codes and ordinances applicable to energy infrastructure.

    NREL/COMPASS’s past year of commit activity
    Python 11 BSD-3-Clause 0 22 1 Updated Jun 21, 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++ 86 BSD-3-Clause 105 28 3 Updated Jun 21, 2025
  • elm Public

    ELM is a collection of utilities to apply Large Language Models (LLMs) to energy research.

    NREL/elm’s past year of commit activity
    Python 61 BSD-3-Clause 21 1 1 Updated Jun 22, 2025
  • dw-tap-api Public
    NREL/dw-tap-api’s past year of commit activity
    HTML 3 BSD-3-Clause 8 34 2 Updated Jun 21, 2025
  • OpenStudio-HPXML Public

    Modeling of residential buildings in EnergyPlus using OpenStudio/HPXML.

    NREL/OpenStudio-HPXML’s past year of commit activity
    Ruby 53 26 121 (1 issue needs help) 23 Updated Jun 21, 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 41 26 49 9 Updated Jun 20, 2025
  • buildstock-query Public

    BuildStockQuery is a python library for querying datasets generated by ResStock™ and ComStock™.

    NREL/buildstock-query’s past year of commit activity
    Jupyter Notebook 11 BSD-3-Clause 8 14 (1 issue needs help) 2 Updated Jun 20, 2025
  • BuildingMOTIF Public

    Building Metadata OnTology Interoperability Framework (BuildingMOTIF). For models, see https://models.open223.info/

    NREL/BuildingMOTIF’s past year of commit activity
    Jupyter Notebook 55 15 59 9 Updated Jun 20, 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++ 1,273 441 908 51 Updated Jun 20, 2025
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