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    740 repositories

    • OpenStudio-ERI

      Public
      Energy Rating Index (ERI) calculation via OpenStudio/EnergyPlus.
      Ruby
      •
      Other
      •18•23•7•5•Updated Nov 1, 2025Nov 1, 2025

    • 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++
      •
      Other
      •453•1.3k•899•31•Updated Nov 1, 2025Nov 1, 2025

    • elm

      Public
      ELM is a collection of utilities to apply Large Language Models (LLMs) to energy research.
      energy-datarenewable-energyenergy-policylarge-language-modelsllm
      Python
      •
      BSD 3-Clause "New" or "Revised" License
      •23•63•1•1•Updated Oct 31, 2025Oct 31, 2025

    • openstudio-standards

      Public
      Ruby
      •
      Other
      •68•97•61•5•Updated Oct 31, 2025Oct 31, 2025

    • OpenStudio-HPXML

      Public
      Modeling of residential buildings in EnergyPlus using OpenStudio/HPXML.
      Ruby
      •
      Other
      •26•54•118•18•Updated Oct 31, 2025Oct 31, 2025

    • ALchemist

      Public
      Python
      •
      BSD 3-Clause "New" or "Revised" License
      •1•2•0•0•Updated Oct 31, 2025Oct 31, 2025

    • bifacial_radiance

      Public
      Toolkit for working with RADIANCE for the ray-trace modeling of Bifacial Photovoltaics
      guiradiancerenewable-energyrenewablesphotovoltaicsbifacial
      Python
      •
      BSD 3-Clause "New" or "Revised" License
      •56•100•82•3•Updated Oct 31, 2025Oct 31, 2025

    • hercules

      Public
      Hercules
      Python
      •
      BSD 3-Clause "New" or "Revised" License
      •17•6•6•2•Updated Oct 31, 2025Oct 31, 2025

    • SolTrace

      Public
      SolTrace
      C++
      •
      Other
      •40•50•27•2•Updated Oct 31, 2025Oct 31, 2025

    • BuildingMOTIF

      Public
      Building Metadata OnTology Interoperability Framework (BuildingMOTIF). For models, see https://models.open223.info/
      Jupyter Notebook
      •
      Other
      •16•60•60•13•Updated Oct 31, 2025Oct 31, 2025

    • MoorPy

      Public
      Python
      •
      BSD 3-Clause "New" or "Revised" License
      •30•43•7•0•Updated Oct 31, 2025Oct 31, 2025

    • ssc

      Public
      SAM Simulation Core (SSC) contains the underlying performance and financial models for SAM
      C++
      •
      BSD 3-Clause "New" or "Revised" License
      •112•89•28•5•Updated Oct 31, 2025Oct 31, 2025

    • ComStock

      Public
      National scale modeling of the U.S. commercial building stock supported by U.S. DOE, LADWP, and others and maintained by NREL
      Ruby
      •
      Other
      •27•43•57•5•Updated Oct 31, 2025Oct 31, 2025

    • 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.
      energyplusopenstudioopenstudio-sdk
      C++
      •
      Other
      •219•559•220•11•Updated Oct 31, 2025Oct 31, 2025

    • PVDegradationTools

      Public
      Set of tools to calculate degradation responses and degradation related parameters for PV.
      pythonreliabilitydegradationphotovoltaic-systemspv-modulesduramat
      Jupyter Notebook
      •
      Other
      •20•39•52•8•Updated Oct 31, 2025Oct 31, 2025

    • foundational-industry-energy-data

      Public
      The Foundational Industry Energy Dataset (FIED) is a unit-level characterization of energy use in the U.S. industrial sector.
      energy-dataenergy-consumptionindustry
      Python
      •8•10•8•3•Updated Oct 31, 2025Oct 31, 2025

    • solar-data-tools

      Public
      Some data analysis tools for working with historical PV solar time-series data sets.
      Jupyter Notebook
      •
      BSD 2-Clause "Simplified" License
      •29•85•2•1•Updated Oct 31, 2025Oct 31, 2025

    • NEB-Tool

      Public
      A user friendly, graphical, open-source application (Web/Mac/Windows) of the multiple benefits framework for non-energy benefits, incorporating additional aspects to make the tool effective for use in the United States.
      TypeScript
      •
      Other
      •8•2•52•1•Updated Oct 31, 2025Oct 31, 2025

    • ComStock.github.io

      Public
      Jupyter Notebook
      •
      MIT License
      •9•1•0•1•Updated Oct 31, 2025Oct 31, 2025

    • soogo

      Public
      Surrogate-based 0-th Order Global Optimization for black-box problems.
      aiblack-box-optimizationoptimization-algorithmsexpensive-to-evaluate-functionssurrogate-based-optimizationgradient-free-optimization
      Python
      •
      GNU General Public License v3.0
      •8•5•0•2•Updated Oct 31, 2025Oct 31, 2025

    • marbles

      Public
      Lattice Boltzmann method solver using adaptive mesh refinement
      adaptive-mesh-refinementamrexlattice-boltzmann-method
      Jupyter Notebook
      •
      Apache License 2.0
      •12•12•0•1•Updated Oct 31, 2025Oct 31, 2025

    • 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)
      optimizationnrelrenewable-energyreopt-lite-apireopt-apireoptjl
      Python
      •
      Other
      •62•113•43•7•Updated Oct 31, 2025Oct 31, 2025

    • geoPFA

      Public
      Geothermal Play Fairway Analysis
      energygeothermal
      Python
      •0•2•0•1•Updated Oct 31, 2025Oct 31, 2025

    • chronify

      Public
      Python
      •
      BSD 3-Clause "New" or "Revised" License
      •6•5•22•5•Updated Oct 31, 2025Oct 31, 2025

    • cmlm

      Public
      Code for generating/testing reduced-order manifold turbulent combustion models, for stand alone analysis and use with the Pele suite of reacting flow solvers. Supports both tabulated physics-based approaches and machine learning/neural network approaches.
      Python
      •
      BSD 3-Clause "New" or "Revised" License
      •9•2•0•0•Updated Oct 31, 2025Oct 31, 2025

    • WattAMeter

      Public
      Python package for monitoring and recording power usage, energy consumption, and performance metrics from hardware components such as GPUs and CPUs
      time-seriesnvmldata-analysisgpu-monitoringslurm-utilitypower-trackercpu-tracker
      Python
      •
      BSD 3-Clause "New" or "Revised" License
      •0•1•0•0•Updated Oct 30, 2025Oct 30, 2025

    • resstock

      Public
      Highly granular modeling of residential building stocks at national, regional, and local scales using OpenStudio/EnergyPlus.
      Ruby
      •
      Other
      •81•132•68•19•Updated Oct 30, 2025Oct 30, 2025

    • REopt.jl

      Public
      Julia
      •
      Apache License 2.0
      •42•35•86•30•Updated Oct 30, 2025Oct 30, 2025

    • altrios

      Public
      Rust
      •
      Other
      •11•27•9•10•Updated Oct 30, 2025Oct 30, 2025

    • H2Integrate

      Public
      PowerBuilder
      •
      Other
      •24•15•109•9•Updated Oct 30, 2025Oct 30, 2025