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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 341

  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 433

  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++ 536 212

  4. SAM SAM Public

    System Advisor Model (SAM)

    C++ 378 186

  5. floris floris Public

    A controls-oriented engineering wake model.

    Python 239 172

  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 200 77

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Showing 10 of 683 repositories
  • 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++ 1,235 433 905 45 Updated Apr 26, 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 4 Updated Apr 26, 2025
  • REopt_API Public

    The model for the REopt API, which is used as the back-end for the REopt Webtool (reopt.nrel.gov/tool), and can be accessed directly via the NREL Developer Network (https://developer.nrel.gov/docs/energy-optimization/reopt)

    NREL/REopt_API’s past year of commit activity
    Python 101 57 44 16 Updated Apr 26, 2025
  • buildstockbatch Public
    NREL/buildstockbatch’s past year of commit activity
    Python 24 21 40 (3 issues need help) 13 Updated Apr 26, 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 38 26 45 13 Updated Apr 26, 2025
  • developer.nrel.gov Public

    An issue tracker for NREL's APIs available at https://developer.nrel.gov

    NREL/developer.nrel.gov’s past year of commit activity
    HTML 49 51 16 6 Updated Apr 26, 2025
  • OpenStudio-HPXML Public

    Modeling of residential buildings in EnergyPlus using OpenStudio/HPXML.

    NREL/OpenStudio-HPXML’s past year of commit activity
    Ruby 52 24 117 (1 issue needs help) 24 Updated Apr 25, 2025
  • reV Public

    Renewable Energy Potential (reV) Model

    NREL/reV’s past year of commit activity
    Python 120 BSD-3-Clause 55 37 (4 issues need help) 1 Updated Apr 25, 2025
  • ATB-calc Public

    Python files and Jupyter notebooks for processing the Annual Technology Baseline (ATB) electricity data and determining LCOE and other metrics.

    NREL/ATB-calc’s past year of commit activity
    Python 35 BSD-3-Clause 14 3 3 Updated Apr 25, 2025
  • sup3r Public

    The Super-Resolution for Renewable Resource Data (sup3r) software uses generative adversarial networks to create synthetic high-resolution wind and solar spatiotemporal data from coarse low-resolution inputs.

    NREL/sup3r’s past year of commit activity
    Python 96 BSD-3-Clause 29 2 1 Updated Apr 25, 2025
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