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National Laboratory of the Rockies

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  1. api-umbrella api-umbrella Public

    Open source API management platform

    Ruby 2.1k 366

  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

  4. SAM SAM Public

    System Advisor Model (SAM)

    C++ 423 204

  5. floris floris Public

    A controls-oriented engineering wake model.

    Python 270 182

  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 227 86

Repositories

Showing 10 of 754 repositories
  • NREL/multiscale-biomass-pyrolysis’s past year of commit activity
    C++ 6 BSD-3-Clause 10 1 0 Updated Jan 20, 2026
  • NREL/openstudio-standards’s past year of commit activity
    Ruby 100 66 58 8 Updated Jan 20, 2026
  • r2x-reeds Public

    Reeds parser and models

    NREL/r2x-reeds’s past year of commit activity
    Python 2 BSD-3-Clause 2 3 2 Updated Jan 20, 2026
  • chronify Public
    NREL/chronify’s past year of commit activity
    Python 5 BSD-3-Clause 7 22 (1 issue needs help) 4 Updated Jan 20, 2026
  • torc Public

    Workflow management system

    NREL/torc’s past year of commit activity
    Rust 7 BSD-3-Clause 2 2 0 Updated Jan 20, 2026
  • 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 1 40 3 Updated Jan 19, 2026
  • routee-compass Public

    An energy-aware vehicle routing engine

    NREL/routee-compass’s past year of commit activity
    Rust 26 BSD-3-Clause 16 66 (5 issues need help) 7 Updated Jan 19, 2026
  • 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 47 28 61 8 Updated Jan 19, 2026
  • r2x-cli Public

    R2X framework repo

    NREL/r2x-cli’s past year of commit activity
    Rust 3 BSD-3-Clause 1 5 9 Updated Jan 19, 2026
  • osos Public

    Open Source Ops and Statistics (OSOS)

    NREL/osos’s past year of commit activity
    Python 9 BSD-3-Clause 9 0 0 Updated Jan 19, 2026