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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 356

  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++ 1.4k 456

  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++ 565 219

  4. SAM SAM Public

    System Advisor Model (SAM)

    C++ 416 200

  5. floris floris Public

    A controls-oriented engineering wake model.

    Python 268 180

  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 221 85

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Showing 10 of 745 repositories
  • 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.

    NREL/OpenStudio’s past year of commit activity
    C++ 565 219 216 8 Updated Dec 1, 2025
  • foundational-industry-energy-data Public

    The Foundational Industry Energy Dataset (FIED) is a unit-level characterization of energy use in the U.S. industrial sector.

    NREL/foundational-industry-energy-data’s past year of commit activity
    Python 10 8 8 2 Updated Dec 1, 2025
  • r2x-reeds Public

    Reeds parser and models

    NREL/r2x-reeds’s past year of commit activity
    Python 2 BSD-3-Clause 0 1 3 Updated Nov 30, 2025
  • r2x-core Public

    R2X framework core package

    NREL/r2x-core’s past year of commit activity
    Python 4 BSD-3-Clause 0 0 2 Updated Nov 30, 2025
  • floris Public

    A controls-oriented engineering wake model.

    NREL/floris’s past year of commit activity
    Python 268 BSD-3-Clause 180 48 16 Updated Nov 30, 2025
  • OCHRE Public

    A Python-based building energy modeling (BEM) tool designed to model flexible loads in residential buildings

    NREL/OCHRE’s past year of commit activity
    Python 67 BSD-3-Clause 30 87 (1 issue needs help) 6 Updated Nov 30, 2025
  • LiAISON Public

    Lifecyle Analysis Integration into Scalable Opensource Numerical models (LiAISON)

    NREL/LiAISON’s past year of commit activity
    Python 13 BSD-3-Clause 8 18 0 Updated Nov 30, 2025
  • sparkctl Public

    Orchestrates Spark clusters on HPCs

    NREL/sparkctl’s past year of commit activity
    Python 2 BSD-3-Clause 0 1 1 Updated Nov 30, 2025
  • COMPASS Public

    INFRA-COMPASS is a tool that leverages Large Language Models (LLMs) to create and maintain an inventory of state and local codes and ordinances applicable to energy infrastructure.

    NREL/COMPASS’s past year of commit activity
    Python 14 BSD-3-Clause 1 92 7 Updated Nov 30, 2025
  • REopt.jl Public
    NREL/REopt.jl’s past year of commit activity
    Julia 35 Apache-2.0 43 89 28 Updated Nov 29, 2025
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