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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 351

  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 451

  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++ 556 218

  4. SAM SAM Public

    System Advisor Model (SAM)

    C++ 409 196

  5. floris floris Public

    A controls-oriented engineering wake model.

    Python 260 179

  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 218 83

Repositories

Showing 10 of 739 repositories
  • PVDegradationTools Public

    Set of tools to calculate degradation responses and degradation related parameters for PV.

    NREL/PVDegradationTools’s past year of commit activity
    Jupyter Notebook 39 20 50 (4 issues need help) 8 Updated Oct 23, 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++ 1,334 451 907 46 Updated Oct 23, 2025
  • bambam Public
    NREL/bambam’s past year of commit activity
    Rust 0 BSD-3-Clause 1 9 3 Updated Oct 23, 2025
  • routee-compass Public

    An energy-aware vehicle routing engine

    NREL/routee-compass’s past year of commit activity
    Rust 24 BSD-3-Clause 15 62 (5 issues need help) 3 Updated Oct 23, 2025
  • NREL/battery_pulse_diagnostics’s past year of commit activity
    Jupyter Notebook 5 9 0 0 Updated Oct 23, 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 131 81 69 (1 issue needs help) 23 Updated Oct 23, 2025
  • ROSCO Public

    A Reference Open Source Controller for Wind Turbines

    NREL/ROSCO’s past year of commit activity
    Python 147 Apache-2.0 113 6 (1 issue needs help) 1 Updated Oct 23, 2025
  • OpenStudio-HPXML Public

    Modeling of residential buildings in EnergyPlus using OpenStudio/HPXML.

    NREL/OpenStudio-HPXML’s past year of commit activity
    Ruby 54 26 120 (1 issue needs help) 18 Updated Oct 23, 2025
  • SolTrace Public

    SolTrace

    NREL/SolTrace’s past year of commit activity
    C++ 50 40 25 (2 issues need help) 2 Updated Oct 23, 2025
  • vidyut3d Public
    NREL/vidyut3d’s past year of commit activity
    C++ 7 BSD-3-Clause 11 0 1 Updated Oct 23, 2025