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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 425

  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++ 358 183

  5. floris floris Public

    A controls-oriented engineering wake model.

    Python 231 171

  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

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Showing 10 of 670 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 31 3 Updated Feb 28, 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 28, 2025
  • altrios Public
    NREL/altrios’s past year of commit activity
    Rust 20 10 4 9 Updated Feb 28, 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) 23 Updated Feb 28, 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 5 Updated Feb 28, 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++ 1,196 425 896 32 Updated Feb 28, 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 36 25 68 14 Updated Feb 28, 2025
  • rex Public

    REsource eXtraction Tool (rex)

    NREL/rex’s past year of commit activity
    Python 26 BSD-3-Clause 21 13 (1 issue needs help) 1 Updated Feb 28, 2025
  • nsrdb Public

    NSRDB data processing pipeline. Includes satellite data assimilation, cloud property prediction and gap-filling, radiative transport modeling, and data collection.

    NREL/nsrdb’s past year of commit activity
    Python 8 BSD-3-Clause 15 2 0 Updated Feb 28, 2025
  • ninterp Public

    Numerical interpolation in N-dimensions over rectilinear grids

    NREL/ninterp’s past year of commit activity
    Rust 3 BSD-3-Clause 6 0 0 Updated Feb 28, 2025
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