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National Renewable Energy Laboratory

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  1. api-umbrella api-umbrella Public

    Open source API management platform

    Ruby 2k 335

  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 422

  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++ 525 208

  4. SAM SAM Public

    System Advisor Model (SAM)

    C++ 357 181

  5. floris floris Public

    A controls-oriented engineering wake model.

    Python 229 170

  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 196 74

Repositories

Showing 10 of 666 repositories
  • ssc Public

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

    NREL/ssc’s past year of commit activity
    C++ 81 BSD-3-Clause 103 30 5 Updated Feb 20, 2025
  • NEB-Tool Public

    A user friendly, graphical, open-source application (Web/Mac/Windows) of the multiple benefits framework for non-energy benefits, incorporating additional aspects to make the tool effective for use in the United States.

    NREL/NEB-Tool’s past year of commit activity
    TypeScript 1 9 100 1 Updated Feb 20, 2025
  • 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 33 18 29 (1 issue needs help) 3 Updated Feb 20, 2025
  • pysam Public

    Python Wrapper for the System Advisor Model

    NREL/pysam’s past year of commit activity
    C 112 BSD-3-Clause 70 14 2 Updated Feb 20, 2025
  • rex Public

    REsource eXtraction Tool (rex)

    NREL/rex’s past year of commit activity
    Python 26 BSD-3-Clause 21 15 (1 issue needs help) 2 Updated Feb 20, 2025
  • chronify Public
    NREL/chronify’s past year of commit activity
    Python 3 BSD-3-Clause 6 20 (1 issue needs help) 1 Updated Feb 20, 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 53 BSD-3-Clause 18 1 1 Updated Feb 19, 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 119 75 65 (1 issue needs help) 24 Updated Feb 19, 2025
  • OpenStudio-HPXML Public

    Modeling of residential buildings in EnergyPlus using OpenStudio/HPXML.

    NREL/OpenStudio-HPXML’s past year of commit activity
    Ruby 48 23 110 (1 issue needs help) 21 Updated Feb 19, 2025
  • phygnn Public

    physics-guided neural networks (phygnn)

    NREL/phygnn’s past year of commit activity
    Python 90 BSD-3-Clause 30 3 0 Updated Feb 19, 2025
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