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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 448

  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++ 555 218

  4. SAM SAM Public

    System Advisor Model (SAM)

    C++ 408 195

  5. floris floris Public

    A controls-oriented engineering wake model.

    Python 256 179

  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 217 83

Repositories

Showing 10 of 734 repositories
  • osos Public

    Open Source Ops and Statistics (OSOS)

    NREL/osos’s past year of commit activity
    Python 9 BSD-3-Clause 8 0 0 Updated Oct 13, 2025
  • REopt.jl Public
    NREL/REopt.jl’s past year of commit activity
    Julia 34 Apache-2.0 41 87 30 Updated Oct 13, 2025
  • pyvisco Public

    Pyvisco is a Python library that supports the identification of Prony series parameters for Generalized Maxwell models describing linear viscoelastic materials.

    NREL/pyvisco’s past year of commit activity
    Jupyter Notebook 15 10 0 0 Updated Oct 13, 2025
  • r2x-reeds Public

    Reeds parser and models

    NREL/r2x-reeds’s past year of commit activity
    Python 2 BSD-3-Clause 0 1 1 Updated Oct 13, 2025
  • r2x-core Public

    R2X framework core package

    NREL/r2x-core’s past year of commit activity
    Python 4 BSD-3-Clause 0 0 1 Updated Oct 13, 2025
  • HistoricalLoadData Public

    This repository will contain the process used to create historical county-level hourly load data used in NREL's ReEDS model.

    NREL/HistoricalLoadData’s past year of commit activity
    Jupyter Notebook 0 0 0 0 Updated Oct 12, 2025
  • reVRt Public

    The reV Routing tool introduces a spatially-aware, least-cost-path methodology that allows users to consider siting constraints, regional component costs, land composition costs, point-of-interconnection costs, and network upgrade costs to estimate the transmission infrastructure requirements for new electrical grid connections.

    NREL/reVRt’s past year of commit activity
    Python 2 BSD-3-Clause 0 46 2 Updated Oct 12, 2025
  • openstudio-standards Public
    NREL/openstudio-standards’s past year of commit activity
    Ruby 96 68 61 4 Updated Oct 12, 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++ 1,332 448 906 46 Updated Oct 12, 2025
  • BuildingMOTIF Public

    Building Metadata OnTology Interoperability Framework (BuildingMOTIF). For models, see https://models.open223.info/

    NREL/BuildingMOTIF’s past year of commit activity
    Jupyter Notebook 60 16 58 12 Updated Oct 12, 2025
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