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    711 repositories

    • hercules

      Public
      Hercules
      Jupyter Notebook
      •
      BSD 3-Clause "New" or "Revised" License
      •17•6•12•2•Updated Jul 19, 2025Jul 19, 2025

    • resstock

      Public
      Highly granular modeling of residential building stocks at national, regional, and local scales using OpenStudio/EnergyPlus.
      Ruby
      •
      Other
      •78•127•75•24•Updated Jul 19, 2025Jul 19, 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
      •440•1.3k•907•49•Updated Jul 18, 2025Jul 18, 2025

    • m2p

      Public
      Python
      •
      BSD 3-Clause "New" or "Revised" License
      •19•31•0•0•Updated Jul 18, 2025Jul 18, 2025

    • BioReactorDesign

      Public
      Bio Reactor Design (BiRD): a toolbox to simulate and analyze different designs of bioreactors in OpenFOAM
      meshingopenfoampostprocessingbioreactorinverse-modelling
      Liquid
      •
      BSD 3-Clause "New" or "Revised" License
      •13•24•7•4•Updated Jul 18, 2025Jul 18, 2025

    • OpenStudio-HPXML

      Public
      Modeling of residential buildings in EnergyPlus using OpenStudio/HPXML.
      Ruby
      •
      Other
      •26•53•118•20•Updated Jul 18, 2025Jul 18, 2025

    • engage

      Public
      NREL Engage Project
      solverengageglpknrelcapacity-expansion-planningenergy-modelinghighs
      JavaScript
      •
      BSD 3-Clause "New" or "Revised" License
      •12•4•1•7•Updated Jul 18, 2025Jul 18, 2025

    • InSPIRE

      Public
      Tutorials, scripts and other modeling aspects of agrivoltaics developed by the InSPIRE team
      HTML
      •
      Other
      •7•14•0•0•Updated Jul 18, 2025Jul 18, 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.
      C++
      •
      Other
      •216•547•203•10•Updated Jul 18, 2025Jul 18, 2025

    • PVDegradationTools

      Public
      Set of tools to calculate degradation responses and degradation related parameters for PV.
      pythonreliabilitydegradationphotovoltaic-systemspv-modulesduramat
      Jupyter Notebook
      •
      Other
      •19•36•38•5•Updated Jul 18, 2025Jul 18, 2025

    • ssc

      Public
      SAM Simulation Core (SSC) contains the underlying performance and financial models for SAM
      C++
      •
      BSD 3-Clause "New" or "Revised" License
      •107•86•28•4•Updated Jul 18, 2025Jul 18, 2025

    • SAM

      Public
      System Advisor Model (SAM)
      C++
      •
      BSD 3-Clause "New" or "Revised" License
      •188•396•69•5•Updated Jul 18, 2025Jul 18, 2025

    • ROSCO

      Public
      A Reference Open Source Controller for Wind Turbines
      Python
      •
      Apache License 2.0
      •107•135•11•6•Updated Jul 18, 2025Jul 18, 2025

    • altrios

      Public
      Rust
      •
      Other
      •10•22•9•9•Updated Jul 18, 2025Jul 18, 2025

    • openstudio-standards

      Public
      Ruby
      •
      Other
      •67•92•60•7•Updated Jul 18, 2025Jul 18, 2025

    • vidyut3d

      Public
      C++
      •
      BSD 3-Clause "New" or "Revised" License
      •7•3•0•0•Updated Jul 18, 2025Jul 18, 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
      •26•41•49•10•Updated Jul 18, 2025Jul 18, 2025

    • HVACResourceMap

      Public
      HTML
      •10•3•0•0•Updated Jul 18, 2025Jul 18, 2025

    • floris

      Public
      A controls-oriented engineering wake model.
      Python
      •
      BSD 3-Clause "New" or "Revised" License
      •174•247•74•18•Updated Jul 18, 2025Jul 18, 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)
      nrelrenewable-energyreopt-lite-apireopt-apireoptjloptimization
      Python
      •
      Other
      •58•105•43•13•Updated Jul 18, 2025Jul 18, 2025

    • opet-control

      Public
      Python
      •
      BSD 3-Clause "New" or "Revised" License
      •0•1•0•1•Updated Jul 18, 2025Jul 18, 2025

    • opet-firmware

      Public
      C
      •
      BSD 3-Clause "New" or "Revised" License
      •0•1•0•0•Updated Jul 18, 2025Jul 18, 2025

    • opet-hardware

      Public
      CERN Open Hardware Licence Version 2 - Permissive
      •0•1•0•0•Updated Jul 18, 2025Jul 18, 2025

    • COMPASS

      Public
      INFRA-COMPASS is a tool that leverages Large Language Models (LLMs) to create and maintain an inventory of state and local codes and ordinances applicable to energy infrastructure.
      infrastructureautomationaipermittingenergy-analysisordinancessitingenergy-policyllm
      Python
      •
      BSD 3-Clause "New" or "Revised" License
      •0•12•19•0•Updated Jul 18, 2025Jul 18, 2025

    • reVX

      Public
      The Renewable Energy Potential(V) eXchange Tool: reVX
      Python
      •
      BSD 3-Clause "New" or "Revised" License
      •17•26•13•1•Updated Jul 18, 2025Jul 18, 2025

    • dw-tap-api

      Public
      HTML
      •
      BSD 3-Clause "New" or "Revised" License
      •7•3•39•2•Updated Jul 18, 2025Jul 18, 2025

    • ESIFHPC4

      Public
      Benchmarks repository for NREL's ESIF-HPC-4 project
      Shell
      •1•1•0•0•Updated Jul 18, 2025Jul 18, 2025

    • fastsim

      Public
      Rust
      •
      Other
      •13•30•4•8•Updated Jul 17, 2025Jul 17, 2025

    • REopt.jl

      Public
      Julia
      •
      Apache License 2.0
      •35•29•83•27•Updated Jul 17, 2025Jul 17, 2025

    • ReEDS-2.0

      Public
      Python
      •
      BSD 3-Clause "New" or "Revised" License
      •69•154•3•0•Updated Jul 17, 2025Jul 17, 2025