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    758 repositories

    • HOPP

      Public
      Python
      •
      BSD 3-Clause "New" or "Revised" License
      •64•34•66•3•Updated Feb 9, 2026Feb 9, 2026

    • OCHRE

      Public
      A Python-based building energy modeling (BEM) tool designed to model flexible loads in residential buildings
      buildingsresidentialload-shiftingdistributed-energy-resourcesresidential-controls
      Python
      •
      BSD 3-Clause "New" or "Revised" License
      •32•70•85•8•Updated Feb 9, 2026Feb 9, 2026

    • 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 buil…
      C++
      •
      Other
      •461•1.4k•903•26•Updated Feb 9, 2026Feb 9, 2026

    • OpenStudio

      Public
      OpenStudio is a cross-platform collection of software tools to support whole building energy modeling using EnergyPlus and advanced daylight analysis using Radi…
      energyplusopenstudioopenstudio-sdk
      C++
      •
      Other
      •222•580•234•10•Updated Feb 9, 2026Feb 9, 2026

    • ReEDS-2.0

      Public
      Python
      •
      BSD 3-Clause "New" or "Revised" License
      •78•168•7•0•Updated Feb 9, 2026Feb 9, 2026

    • OpenStudio-HPXML

      Public
      Modeling of residential buildings in EnergyPlus using OpenStudio/HPXML.
      Ruby
      •
      Other
      •27•60•125•19•Updated Feb 9, 2026Feb 9, 2026

    • bambam

      Public
      Rust
      •
      BSD 3-Clause "New" or "Revised" License
      •2•1•19•1•Updated Feb 9, 2026Feb 9, 2026

    • scikit-sundae

      Public
      Python bindings to SUNDIALS differential algebraic equation solvers
      pythonodeidaimplicitdaesundialscvodenumerical-integrationivpstiff
      Python
      •
      BSD 3-Clause "New" or "Revised" License
      •9•25•1•0•Updated Feb 9, 2026Feb 9, 2026

    • developer.nrel.gov

      Public
      An issue tracker for NREL's APIs available at https://developer.nrel.gov
      HTML
      •56•56•17•2•Updated Feb 9, 2026Feb 9, 2026

    • REopt.jl

      Public
      Julia
      •
      Apache License 2.0
      •48•40•92•39•Updated Feb 9, 2026Feb 9, 2026

    • SAM

      Public
      System Advisor Model (SAM)
      C++
      •
      BSD 3-Clause "New" or "Revised" License
      •205•427•87•6•Updated Feb 9, 2026Feb 9, 2026

    • multiscale-biomass-pyrolysis

      Public
      C++
      •
      BSD 3-Clause "New" or "Revised" License
      •10•6•1•0•Updated Feb 9, 2026Feb 9, 2026

    • pyvisco

      Public
      Pyvisco is a Python library that supports the identification of Prony series parameters for Generalized Maxwell models describing linear viscoelastic materials.
      curve-fittingfinite-element-methodsmaterial-modellingviscoelasticityprony
      Jupyter Notebook
      •
      Other
      •11•18•1•0•Updated Feb 9, 2026Feb 9, 2026

    • torc

      Public
      Workflow management system
      hpcslurmpipelinesworkflows
      Rust
      •
      BSD 3-Clause "New" or "Revised" License
      •2•8•2•0•Updated Feb 8, 2026Feb 8, 2026

    • chronify

      Public
      Python
      •
      BSD 3-Clause "New" or "Revised" License
      •7•5•23•3•Updated Feb 8, 2026Feb 8, 2026

    • LiAISON

      Public
      Lifecyle Analysis Integration into Scalable Opensource Numerical models (LiAISON)
      Python
      •
      BSD 3-Clause "New" or "Revised" License
      •9•16•20•0•Updated Feb 8, 2026Feb 8, 2026

    • thevenin

      Public
      Equivalent circuit models in Python
      batterysimulationmodelecmcircuitstate-estimationelectricalkalman-filter
      Python
      •
      BSD 3-Clause "New" or "Revised" License
      •10•14•0•0•Updated Feb 8, 2026Feb 8, 2026

    • windwatts

      Public
      Python
      •
      BSD 3-Clause "New" or "Revised" License
      •9•3•28•4•Updated Feb 8, 2026Feb 8, 2026

    • pysam

      Public
      Python Wrapper for the System Advisor Model
      C
      •
      BSD 3-Clause "New" or "Revised" License
      •80•127•18•2•Updated Feb 8, 2026Feb 8, 2026

    • ABSiCE

      Public
      Python
      •
      BSD 3-Clause "New" or "Revised" License
      •10•11•3•4•Updated Feb 7, 2026Feb 7, 2026

    • 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 en…
      infrastructureautomationaipermittingenergy-analysisordinancessitingenergy-policyllm
      Python
      •
      BSD 3-Clause "New" or "Revised" License
      •3•14•90•5•Updated Feb 7, 2026Feb 7, 2026

    • ampworks

      Public
      Battery data analysis tools in Python
      experimentdatabatteryanalysishppcicaocvlithium-iongittdqdv
      Python
      •
      BSD 3-Clause "New" or "Revised" License
      •2•11•0•0•Updated Feb 7, 2026Feb 7, 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…
      Python
      •
      Other
      •19•55•53•25•Updated Feb 7, 2026Feb 7, 2026

    • openstudio-calibration-gem

      Public
      Ruby
      •
      Other
      •14•5•9•1•Updated Feb 7, 2026Feb 7, 2026

    • routee-transit

      Public
      Predict energy consumption for transit buses based on GTFS data
      Python
      •
      BSD 3-Clause "New" or "Revised" License
      •0•1•16•1•Updated Feb 7, 2026Feb 7, 2026

    • PVDegradationTools

      Public
      Set of tools to calculate degradation responses and degradation related parameters for PV.
      pythonreliabilitydegradationphotovoltaic-systemspv-modulesduramat
      Jupyter Notebook
      •
      Other
      •23•43•43•7•Updated Feb 6, 2026Feb 6, 2026

    • reV-tutorial

      Public
      Tutorials for using the Renewable Energy Potential Model (reV)
      PowerBuilder
      •7•6•0•0•Updated Feb 6, 2026Feb 6, 2026

    • routee-compass

      Public
      An energy-aware vehicle routing engine
      routingnetworksroute-planningroad-networkseco-routing
      Rust
      •
      BSD 3-Clause "New" or "Revised" License
      •16•26•65•6•Updated Feb 6, 2026Feb 6, 2026

    • reVeal

      Public
      The reV Extension for Analyzing Large Loads (reVeal) is an open-source geospatial software package for modeling the site-suitability and spatial patterns of dep…
      Python
      •
      BSD 3-Clause "New" or "Revised" License
      •0•1•8•0•Updated Feb 6, 2026Feb 6, 2026

    • openstudio-standards

      Public
      Ruby
      •
      Other
      •67•101•58•4•Updated Feb 6, 2026Feb 6, 2026