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National Laboratory of the Rockies

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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++ 1.4k 460

  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++ 574 222

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    System Advisor Model (SAM)

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  5. floris floris Public

    A controls-oriented engineering wake model.

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  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 …

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Repositories

Showing 10 of 754 repositories
  • R2X Public

    Model translation framework

    NREL/R2X’s past year of commit activity
    Python 14 BSD-3-Clause 17 26 2 Updated Jan 15, 2026
  • 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 69 BSD-3-Clause 31 88 (1 issue needs help) 6 Updated Jan 15, 2026
  • 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++ 1,385 460 897 27 Updated Jan 15, 2026
  • REopt.jl Public
    NREL/REopt.jl’s past year of commit activity
    Julia 38 Apache-2.0 47 92 39 Updated Jan 15, 2026
  • OpenStudio-server Public

    The OpenStudio Server is a docker or Helm deployable instance which allows for large-scale parametric analyses of building energy models using the OpenStudio or URBANopt CLIs.

    NREL/OpenStudio-server’s past year of commit activity
    Ruby 51 26 7 1 Updated Jan 15, 2026
  • r2x-cli Public

    R2X framework repo

    NREL/r2x-cli’s past year of commit activity
    Rust 3 BSD-3-Clause 1 5 7 Updated Jan 15, 2026
  • OpenStudio-HPXML Public

    Modeling of residential buildings in EnergyPlus using OpenStudio/HPXML.

    NREL/OpenStudio-HPXML’s past year of commit activity
    Ruby 60 27 122 (1 issue needs help) 19 Updated Jan 15, 2026
  • H2Integrate Public
    NREL/H2Integrate’s past year of commit activity
    PowerBuilder 18 BSD-3-Clause 27 104 10 Updated Jan 15, 2026
  • bifacial_radiance Public

    Toolkit for working with RADIANCE for the ray-trace modeling of Bifacial Photovoltaics

    NREL/bifacial_radiance’s past year of commit activity
    HTML 102 BSD-3-Clause 57 82 1 Updated Jan 15, 2026
  • soogo Public

    Surrogate-based 0-th Order Global Optimization for black-box problems.

    NREL/soogo’s past year of commit activity
    Python 5 GPL-3.0 9 0 1 Updated Jan 15, 2026