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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 364

  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 270 181

  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 225 86

Repositories

Showing 10 of 755 repositories
  • 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++ 1,380 460 898 30 Updated Jan 9, 2026
  • developer.nrel.gov Public

    An issue tracker for NREL's APIs available at https://developer.nrel.gov

    NREL/developer.nrel.gov’s past year of commit activity
    HTML 55 56 18 3 Updated Jan 9, 2026
  • routee-transit Public

    Predict energy consumption for transit buses based on GTFS data

    NREL/routee-transit’s past year of commit activity
    Python 1 BSD-3-Clause 0 12 0 Updated Jan 9, 2026
  • NREL/SecondaryCoolantProps’s past year of commit activity
    Python 1 3 0 0 Updated Jan 9, 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 3 0 Updated Jan 9, 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 41 2 Updated Jan 9, 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 64 43 9 Updated Jan 8, 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 65 (5 issues need help) 4 Updated Jan 8, 2026
  • NREL/multiscale-biomass-pyrolysis’s past year of commit activity
    C++ 6 BSD-3-Clause 10 1 0 Updated Jan 8, 2026
  • r2x-cli Public

    R2X framework repo

    NREL/r2x-cli’s past year of commit activity
    Rust 3 BSD-3-Clause 1 7 13 Updated Jan 8, 2026