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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 352

  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 456

  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++ 559 220

  4. SAM SAM Public

    System Advisor Model (SAM)

    C++ 410 199

  5. floris floris Public

    A controls-oriented engineering wake model.

    Python 263 180

  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 219 85

Repositories

Showing 10 of 742 repositories
  • openstudio-ee-gem Public
    NREL/openstudio-ee-gem’s past year of commit activity
    Ruby 2 9 6 4 Updated Nov 8, 2025
  • vidyut3d Public
    NREL/vidyut3d’s past year of commit activity
    C++ 8 BSD-3-Clause 13 0 1 Updated Nov 8, 2025
  • chronify Public
    NREL/chronify’s past year of commit activity
    Python 5 BSD-3-Clause 6 22 (1 issue needs help) 4 Updated Nov 8, 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 14 BSD-3-Clause 0 92 2 Updated Nov 7, 2025
  • dw-tap-api Public
    NREL/dw-tap-api’s past year of commit activity
    TypeScript 3 BSD-3-Clause 7 41 2 Updated Nov 7, 2025
  • pysam Public

    Python Wrapper for the System Advisor Model

    NREL/pysam’s past year of commit activity
    C 125 BSD-3-Clause 78 17 2 Updated Nov 7, 2025
  • hercules Public

    Hercules

    NREL/hercules’s past year of commit activity
    Python 6 BSD-3-Clause 17 6 3 Updated Nov 7, 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 135 81 70 (2 issues need help) 25 Updated Nov 7, 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++ 1,339 456 902 34 Updated Nov 7, 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 43 27 57 4 Updated Nov 7, 2025
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