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National Renewable Energy Laboratory

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  1. api-umbrella api-umbrella Public

    Open source API management platform

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  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 441

  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++ 547 216

  4. SAM SAM Public

    System Advisor Model (SAM)

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  5. floris floris Public

    A controls-oriented engineering wake model.

    Python 244 174

  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 205 80

Repositories

Showing 10 of 706 repositories
  • developer.nrel.gov Public

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

    HTML 50 53 17 3 Updated Jul 16, 2025
  • resstock Public

    Highly granular modeling of residential building stocks at national, regional, and local scales using OpenStudio/EnergyPlus.

    Ruby 127 78 74 (1 issue needs help) 24 Updated Jul 16, 2025
  • R2X Public

    Model translation framework

    Python 13 BSD-3-Clause 16 19 2 Updated Jul 16, 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

    Ruby 41 26 49 12 Updated Jul 16, 2025
  • plexosdb Public

    Database Manager for use with PLEXOS XML files

    Python 17 BSD-3-Clause 13 5 0 Updated Jul 16, 2025
  • infrasys Public

    Data store for components and time series in support of Python-based modeling packages

    Python 9 BSD-3-Clause 8 21 3 Updated Jul 15, 2025
  • OpenStudio-HPXML Public

    Modeling of residential buildings in EnergyPlus using OpenStudio/HPXML.

    Ruby 53 26 119 (1 issue needs help) 21 Updated Jul 16, 2025
  • elm Public

    ELM is a collection of utilities to apply Large Language Models (LLMs) to energy research.

    Python 61 BSD-3-Clause 21 1 1 Updated Jul 16, 2025
  • H2Integrate Public
    PowerBuilder 10 19 69 6 Updated Jul 15, 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.

    C++ 1,278 441 912 53 Updated Jul 15, 2025