Skip to content
@NREL

National Laboratory of the Rockies

Popular repositories Loading

  1. api-umbrella api-umbrella Public

    Open source API management platform

    Ruby 2.1k 362

  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 458

  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++ 573 222

  4. SAM SAM Public

    System Advisor Model (SAM)

    C++ 421 203

  5. floris floris Public

    A controls-oriented engineering wake model.

    Python 269 181

  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 224 86

Repositories

Showing 10 of 752 repositories
  • openstudio-model-articulation-gem Public
    NREL/openstudio-model-articulation-gem’s past year of commit activity
    Ruby 10 21 34 3 Updated Jan 2, 2026
  • docker-openstudio Public

    Repository for managing the builds of OpenStudio Docker images.

    NREL/docker-openstudio’s past year of commit activity
    Dockerfile 22 19 9 0 Updated Jan 1, 2026
  • marbles Public

    Lattice Boltzmann method solver using adaptive mesh refinement

    NREL/marbles’s past year of commit activity
    Jupyter Notebook 14 Apache-2.0 14 3 2 Updated Jan 1, 2026
  • alfalfa Public

    Alfalfa is a web service that enables runtime interaction with building energy models (OpenStudio/EnergyPlus and FMUs compiled from Modelica or Spawn) over REST APIs.

    NREL/alfalfa’s past year of commit activity
    Python 54 19 53 20 Updated Jan 1, 2026
  • spades Public

    Parallel Discrete Events Simulation for heterogenous architectures (e.g., GPUs)

    NREL/spades’s past year of commit activity
    C++ 3 Apache-2.0 1 0 1 Updated Jan 1, 2026
  • windwatts Public
    NREL/windwatts’s past year of commit activity
    TypeScript 3 BSD-3-Clause 9 39 4 Updated Jan 1, 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 1 Updated Jan 1, 2026
  • torc Public

    Workflow management system

    NREL/torc’s past year of commit activity
    Rust 3 BSD-3-Clause 2 2 0 Updated Jan 1, 2026
  • REopt.jl Public
    NREL/REopt.jl’s past year of commit activity
    Julia 38 Apache-2.0 46 90 39 Updated Jan 1, 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 68 BSD-3-Clause 31 87 (1 issue needs help) 6 Updated Jan 1, 2026
View all repositories