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    745 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.
      C++
      •
      Other
      •456•1.3k•895•31•Updated Nov 23, 2025Nov 23, 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•564•216•12•Updated Nov 23, 2025Nov 23, 2025

    • torc

      Public
      Workflow management system
      hpcslurmpipelinesworkflows
      Rust
      •
      BSD 3-Clause "New" or "Revised" License
      •1•3•2•1•Updated Nov 23, 2025Nov 23, 2025

    • WAVES

      Public
      Offshore Wind Farm Lifecycle Estimation
      pythonsimulationwind-energydiscrete-event-simulationlcoewind-energy-analyticsoffshore-wind
      Python
      •
      Apache License 2.0
      •10•13•1•0•Updated Nov 22, 2025Nov 22, 2025

    • openstudio-standards

      Public
      Ruby
      •
      Other
      •68•100•62•4•Updated Nov 22, 2025Nov 22, 2025

    • api-umbrella

      Public
      Open source API management platform
      nginxluaapi-managementapi-gatewayluajitopenrestyapi-manager
      Ruby
      •
      MIT License
      •355•2.1k•229•9•Updated Nov 22, 2025Nov 22, 2025

    • InSPIRE

      Public
      Tutorials, scripts and other modeling aspects of agrivoltaics developed by the InSPIRE team
      HTML
      •
      Other
      •7•14•0•0•Updated Nov 22, 2025Nov 22, 2025

    • resstock

      Public
      Highly granular modeling of residential building stocks at national, regional, and local scales using OpenStudio/EnergyPlus.
      Ruby
      •
      Other
      •79•137•70•24•Updated Nov 22, 2025Nov 22, 2025

    • ESIFHPC4

      Public
      Benchmarks repository for NREL's ESIF-HPC-4 project
      Shell
      •6•1•0•4•Updated Nov 22, 2025Nov 22, 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•32•6•5•Updated Nov 22, 2025Nov 22, 2025

    • bambam

      Public
      Rust
      •
      BSD 3-Clause "New" or "Revised" License
      •1•1•7•2•Updated Nov 22, 2025Nov 22, 2025

    • PVDegradationTools

      Public
      Set of tools to calculate degradation responses and degradation related parameters for PV.
      pythonreliabilitydegradationphotovoltaic-systemspv-modulesduramat
      Jupyter Notebook
      •
      Other
      •20•40•53•8•Updated Nov 21, 2025Nov 21, 2025

    • WETOStack

      Public
      TeX
      •
      Apache License 2.0
      •11•6•0•0•Updated Nov 21, 2025Nov 21, 2025

    • OpenStudio-HPXML

      Public
      Modeling of residential buildings in EnergyPlus using OpenStudio/HPXML.
      Ruby
      •
      Other
      •26•55•121•17•Updated Nov 21, 2025Nov 21, 2025

    • REopt.jl

      Public
      Julia
      •
      Apache License 2.0
      •43•35•89•29•Updated Nov 21, 2025Nov 21, 2025

    • OpenStudio-PAT

      Public
      The Parametric Analysis Tool (PAT) is part of the OpenStudio collection of software tools.
      Ruby
      •
      Other
      •17•34•71•26•Updated Nov 21, 2025Nov 21, 2025

    • r2x-core

      Public
      R2X framework core package
      Python
      •
      BSD 3-Clause "New" or "Revised" License
      •0•4•0•1•Updated Nov 21, 2025Nov 21, 2025

    • ReEDS-2.0

      Public
      Python
      •
      BSD 3-Clause "New" or "Revised" License
      •76•167•3•0•Updated Nov 21, 2025Nov 21, 2025

    • openstudio-ee-gem

      Public
      Ruby
      •
      Other
      •9•2•6•4•Updated Nov 21, 2025Nov 21, 2025

    • sparkctl

      Public
      Orchestrates Spark clusters on HPCs
      sparkhpcclusterslurm
      Python
      •
      BSD 3-Clause "New" or "Revised" License
      •0•2•1•1•Updated Nov 21, 2025Nov 21, 2025

    • developer.nrel.gov

      Public
      An issue tracker for NREL's APIs available at https://developer.nrel.gov
      HTML
      •55•54•17•2•Updated Nov 21, 2025Nov 21, 2025

    • SAM-analyses

      Public
      Jupyter Notebook
      •
      BSD 3-Clause "New" or "Revised" License
      •5•3•0•0•Updated Nov 21, 2025Nov 21, 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•115•43•5•Updated Nov 21, 2025Nov 21, 2025

    • SolTrace

      Public
      SolTrace
      C++
      •
      Other
      •40•50•30•1•Updated Nov 21, 2025Nov 21, 2025

    • PRAS

      Public
      NREL's Probabilistic Resource Adequacy Suite (PRAS)
      Julia
      •26•68•19•1•Updated Nov 21, 2025Nov 21, 2025

    • geoPFA

      Public
      Geothermal Play Fairway Analysis
      energygeothermal
      Python
      •0•3•0•2•Updated Nov 21, 2025Nov 21, 2025

    • dw-tap-api

      Public
      TypeScript
      •
      BSD 3-Clause "New" or "Revised" License
      •7•3•40•1•Updated Nov 21, 2025Nov 21, 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•44•57•5•Updated Nov 21, 2025Nov 21, 2025

    • MoorPy

      Public
      Python
      •
      BSD 3-Clause "New" or "Revised" License
      •30•43•8•0•Updated Nov 21, 2025Nov 21, 2025

    • OpenStudio-ERI

      Public
      Energy Rating Index (ERI) calculation via OpenStudio/EnergyPlus.
      Ruby
      •
      Other
      •18•23•8•2•Updated Nov 21, 2025Nov 21, 2025