PowSyBl
An open source framework written in Java, that makes it easy to write complex software for power systems simulations and analysis.
cim energy-system extensible groovy java modular power-system-simulation power-systems powsybl
Energy Systems - Energy System Modeling Frameworks - Last synced: 06 Jan 2026 - Ranking: 23.3
PyPSA
A free software toolbox for simulating and optimizing modern power systems that include features such as conventional generators with unit commitment, variable wind and solar generation, storage units, coupling to other energy sectors, and mixed alternating and direct current networks.
capacity-expansion-planning clean-energy climate-change electrical-engineering electricity energy energy-system energy-system-model energy-system-modelling energy-systems loadflow optimal-power-flow optimisation power-flow power-systems power-systems-analysis powerflow python renewable-energy renewables
Energy Systems - Energy System Modeling Frameworks - Last synced: 07 Jan 2026 - Ranking: 22.4
oemof-solph
A model generator for energy system modeling and optimization.
energy energy-system modelling modelling-framework
Energy Systems - Energy System Modeling Frameworks - Last synced: 07 Jan 2026 - Ranking: 20.0
atlite
Light-weight version of Aarhus RE Atlas for converting weather data to power systems data.
csp dynamic-line-rating energy energy-system energy-systems era5 gis heat-pump potentials pv python reanalysis renewable-energy renewable-timeseries solar wind
Energy Systems - Renewable Energy Integration - Last synced: 07 Jan 2026 - Ranking: 18.7
Egret
A Python-based package for electrical grid optimization based on the Pyomo optimization modeling language.
energy-system milp minlp nlp optimization power powerflow python snl-applications snl-science-libs
Energy Systems - Grid Analysis and Planning - Last synced: 07 Jan 2026 - Ranking: 18.5
tsam
A Python package which uses different machine learning algorithms for the aggregation of time series.
aggregation clustering energy-system optimization python time-series timeseries typical-periods
Energy Systems - Energy System Modeling Frameworks - Last synced: 06 Jan 2026 - Ranking: 18.3
tespy
Provides a powerful simulation toolkit for thermal engineering plants such as power plants, district heating systems or heat pumps.
cooling energy-system exergy heating powerplant process-engineering python refrigeration simulation thermodynamic-cycles thermodynamics
Consumption - Buildings and Heating - Last synced: 07 Jan 2026 - Ranking: 18.3
PowSyBl Open Load Flow
An open source library written in Java, that makes it easy to write complex software for power systems simulations and analysis.
energy-system java klu load-flow loadflow power-flow power-system-simulation power-systems powerflow powsybl
Energy Systems - Energy System Modeling Frameworks - Last synced: 06 Jan 2026 - Ranking: 17.5
Calliope
A framework to develop energy system models, with a focus on flexibility, high spatial and temporal resolution, the ability to execute many runs based on the same base model, and a clear separation of framework and model.
energy energy-system optimisation pyomo python
Energy Systems - Energy System Modeling Frameworks - Last synced: 07 Jan 2026 - Ranking: 16.9
MESSAGEix
A versatile, dynamic systems-optimization modeling framework developed by the IIASA Energy, Climate, and Environment (ECE) Program since the 1980s.
energy-system gams integrated-assessment integrated-assessment-model open-source strategic-planning
Climate Change - Integrated Assessment and Climate Policy - Last synced: 07 Jan 2026 - Ranking: 16.8
PowerSystems.jl
Provides a rigorous data model using Julia structures to enable power systems analysis and modeling.
electrical energy-system julia nrel powersystems
Energy Systems - Energy System Modeling Frameworks - Last synced: 07 Jan 2026 - Ranking: 16.3
flixOpt
Python-based optimization framework designed to tackle energy and material flow problems using mixed-integer linear programming (MILP) and provides a powerful platform for both dispatch and investment optimization challenges.
climate-change energy energy-system energy-system-modeling energy-systems linear-programming mathematical-modelling milp mixed-integer-linear-programming modeling optimisation optimization python renewables
Energy Systems - Energy System Modeling Frameworks - Last synced: 07 Jan 2026 - Ranking: 13.4
Vessim
A co-simulation testbed for energy-aware and carbon-aware applications and systems, based on Mosaik.
carbon-aware co-simulation energy-system simulation software-in-the-loop testbed
Energy Systems - Grid Management and Microgrid - Last synced: 06 Jan 2026 - Ranking: 11.5
Open-TYNDP
Explore and consider the adoption of PyPSA in the Ten-Year Network Development Plan of European Network of Transmission System Operators for Electricity (ENTSO-E) by building a workflow based on PyPSA-Eur.
energy energy-model energy-system energy-system-model energy-systems power-systems pypsa snakemake
Energy Systems - Energy System Modeling Frameworks - Last synced: 06 Jan 2026 - Ranking: 9.7
SustainGym
Reinforcement Learning Environments for Sustainable Energy Systems.
distribution-shift energy-system reinforcement-learning
Energy Systems - Energy System Modeling Frameworks - Last synced: 06 Jan 2026 - Ranking: 9.5
Energy Transition Engine
Calculation engine for the Energy Transition Model.
backend-api calculation-engine energy-system etm rails
Energy Systems - Energy System Modeling Frameworks - Last synced: 07 Jan 2026 - Ranking: 8.3
OpenIPSL
A library of power system component models written in the Modelica language that can be used for power system dynamic analysis, such as phasor time-domain simulations.
energy energy-system energy-system-modeling gridcal hacktoberfest modelica power-grid power-grids power-system-dynamic-modeling power-system-dynamics power-system-simulation power-system-stability power-system-stabilizer power-systems power-systems-analysis smart-grids
Energy Systems - Energy System Modeling Frameworks - Last synced: 06 Jan 2026 - Ranking: 8.3
hydro-power-database
Collects basic information on all the European hydro-power plants.
energy-system hydropower power-system-simulation
Renewable Energy - Hydro Energy - Last synced: 06 Jan 2026 - Ranking: 5.9
RTS-GMLC
Reliability Test System of the Grid Modernization Lab Consortium.
energy-data energy-system matpower power-systems power-systems-analysis rts
Energy Systems - Grid Analysis and Planning - Last synced: 07 Jan 2026 - Ranking: -Infinity
urbs
A linear optimization model for distributed energy systems.
energy-system linear-programming mathematical-modelling optimisation-model pandas pyomo python
Energy Systems - Energy System Modeling Frameworks - Last synced: 07 Jan 2026 - Ranking: -Infinity
Dynaωo
Aims at providing power system stakeholders with a transparent, flexible, interoperable and robust suite of simulation tools that could ease collaboration and cooperation in the power system community.
energy-system power-system-simulation power-systems power-systems-analysis
Energy Systems - Energy System Modeling Frameworks - Last synced: 07 Jan 2026 - Ranking: -Infinity
PyPSA-Eur
A Sector-Coupled Open Optimization Model of the European Transmission System.
capacity-expansion-model capacity-expansion-planning energy energy-data energy-model energy-system energy-system-analysis energy-system-model energy-system-modelling energy-systems europe power-grid power-systems pypsa sector-coupling snakemake transmission-network
Energy Systems - Global and Regional Energy System Models - Last synced: 07 Jan 2026 - Ranking: -Infinity