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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 365

  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++ 421 204

  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 226 86

Repositories

Showing 10 of 755 repositories
  • openstudio-standards Public
    NREL/openstudio-standards’s past year of commit activity
    Ruby 100 66 58 3 Updated Jan 13, 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 13, 2026
  • H2Integrate Public
    NREL/H2Integrate’s past year of commit activity
    PowerBuilder 18 BSD-3-Clause 27 141 11 Updated Jan 13, 2026
  • Panel-Segmentation Public

    This open-source package provides a framework for automatically detecting and extracting metadata from solar array installations in satellite images.

    NREL/Panel-Segmentation’s past year of commit activity
    Python 32 MIT 15 5 2 Updated Jan 12, 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) 5 Updated Jan 12, 2026
  • buildstockbatch Public
    NREL/buildstockbatch’s past year of commit activity
    Python 25 21 50 (3 issues need help) 15 Updated Jan 12, 2026
  • resstock Public

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

    NREL/resstock’s past year of commit activity
    Ruby 139 80 66 (1 issue needs help) 25 Updated Jan 12, 2026
  • SolTrace Public

    SolTrace

    NREL/SolTrace’s past year of commit activity
    C++ 51 44 32 (2 issues need help) 2 Updated Jan 12, 2026
  • REopt_API Public

    The model for the REopt API, which is used as the back-end for the REopt Webtool (reopt.nrel.gov/tool), and can be accessed directly via the NREL Developer Network (https://developer.nrel.gov/docs/energy-optimization/reopt)

    NREL/REopt_API’s past year of commit activity
    Python 116 65 44 8 Updated Jan 12, 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 60 10 Updated Jan 12, 2026
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