PowSyBl maintainers

April 27, 2026 · View on GitHub

The PowSyBl project is split in several repositories so we decided to dispatch the responsibility of the repositories between maintainers, either for the code review or to release the code. The contact information for our main repositories is listed below.

Java release train

powsybl-core

This repository provides the core features of the PowSyBl framework, such as the grid modeling, the support of several data exchange formats (CGMES, UCTE...), computation APIs (load flow, security analysis, sensitivity analysis, dynamic simulation...), time series.

Reviewers: all great contributors are relevant as the first reviewer, the second review must be performed by a committer. This repository has many very different features, do not hesitate to ask the developers' community before.
Committers: flo-dup, geofjamg, olperr1, zamarrenolm, jeandemanged, obrix, rolnico, colineplqt

powsybl-diagram

This repository provides modules to generate single-line diagrams and network graph diagrams.

Reviewers: flo-dup, geofjamg, So-Fras, AAJELLAL, antoinebhs, EstherDarkish, klesaulnier, Meklo, sBouzols, SlimaneAmar, souissimai, etiennehomer
Committers: flo-dup, geofjamg, So-Fras, rolnico

powsybl-open-loadflow

This repository provides an implementation of the LoadFlow API based on the powsybl-math-native project.

Reviewers: geofjamg, annetill, jeandemanged, obrix, vidaldid-rte, SylvestreSakti
Committers: geofjamg, annetill, jeandemanged, obrix, vidaldid-rte, SylvestreSakti

powsybl-dynawo

This repository provides an implementation of the dynamic simulation API for the Dynaωo time domain simulation tool.

Reviewers: flo-dup, gautierbureau, Lisrte
Committers: flo-dup, Lisrte, alicecaron

powsybl-entsoe

This repository provides components specific to ENTSO-E-orientated processes.

Reviewers: phiedw, colineplqt, OpenSuze
Committers: phiedw, OpenSuze

powsybl-open-rao

This repository provides a modular engine for remedial actions optimization.

Reviewers: bqth29, benrejebmoh, Godelaine, jipea, MartinBelthle, murgeyseb, pet-mit, phiedw
Committers: bqth29, benrejebmoh, Godelaine, jipea, MartinBelthle, murgeyseb, pet-mit, phiedw

powsybl-dependencies

This repository helps users with dependency management in PowSyBl.

Reviewers: olperr1, flo-dup, rolnico
Committers: olperr1, flo-dup, rolnico

powsybl-starter

This repository is a help for PowSyBl beginners: it makes the main PowSyBl functionalities available through one single dependency import.

Reviewers: olperr1, flo-dup, rolnico
Committers: olperr1, flo-dup, rolnico

powsybl-distribution

This repository helps to generate a basic distribution of PowSyBl.

Reviewers: olperr1, flo-dup, rolnico
Committers: olperr1, flo-dup, rolnico

Python libraries

pypowsybl

This repository provides a GraalVM integration of the PowSyBl libraries for Python developers.

Reviewers: geofjamg, EtienneLt, colineplqt, obrix, bqth29
Committers: geofjamg, EtienneLt, obrix, HugoKulesza, Godelaine, bqth29

pypowsybl-notebooks

This repository provides some notebooks using pypowsybl for demos and tutorials.

Reviewers: geofjamg, colineplqt, obrix
Committers: geofjamg, obrix, alicecaron, Godelaine

pypowsybl-jupyter

This repository contains widgets for pypowsybl in Jupyter notebooks.

Committers: flo-dup, rolnico

Julia librairies

powsybl.jl

This repository provides a GraalVM integration of the PowSyBl libraries for Julia developers.

Reviewers: geofjamg, obrix
Committers: geofjamg, obrix

Community

.github

This repository contains documents to explain how the PowSyBl organization works (code of conduct, maintainers, contributing, security). It also provides the templates for the issues and the pull requests. These documents are shared by all the repositories. The associated Github wiki contains the roadmap of the whole organization.

Reviewers: So-Fras, rolnico, olperr1
Committers: So-Fras, rolnico, olperr1

powsybl.github.io

This repository contains the source code of the PowSyBl organizational website.

Reviewers: So-Fras, colineplqt
Committers: all the committers

powsybl-tutorials

This repository contains the source code of the different tutorials presented on this website.

Reviewers: So-Fras, colineplqt, rolnico
Committers: all the committers

Commons

powsybl-parent

This repository provides the build configuration shared as maven pom files, shared by all our Java repositories.

Reviewers: jonenst, Tristan-WorkGH, TheMaskedTurtle, achour94, antoinebhs, AbdelHedhili, rolnico, olperr1
Committers: jonenst, rolnico, olperr1

java-docker

This repository provides a base docker image with java and a 'powsybl' user to be used by our deployments.
Reviewers: jonenst, etiennehomer, AAJELLAL, AbdelHedhili, achour94, antoinebhs, ayolab, basseche, celmhari, dbraquart, EstherDarkish, EtienneLt, FranckLecuyer, ghazwarhili, klesaulnier, Mathieu-Deharbe, Meklo, sBouzols, SlimaneAmar, souissimai, thangqp, TheMaskedTurtle, Tristan-WorkGH
Committers: jonenst, antoinebhs

java-dynawo-docker

This repository provides a base docker image that expands on java-docker by adding dynawo and its requirements.
Reviewers: jonenst, etiennehomer, AAJELLAL, AbdelHedhili, achour94, antoinebhs, ayolab, basseche, celmhari, dbraquart, EstherDarkish, EtienneLt, FranckLecuyer, ghazwarhili, klesaulnier, Mathieu-Deharbe, Meklo, sBouzols, SlimaneAmar, souissimai, thangqp, TheMaskedTurtle, Tristan-WorkGH
Committers: jonenst, antoinebhs

powsybl-dev-tools

This repository provides tools to help developers with debugging, such as a single-line diagram viewer.

Committers: flo-dup, So-Fras, rolnico

powsybl-incubator

This repository provides incubating modules that are not mature enough to be released.

Reviewers: all the committers

github-ci

This repository provides reusable workflows for running CIs and publishing releases

Reviewers: jonenst, antoinebhs, TheMaskedTurtle, achour94
Committers: jonenst, antoinebhs

Other Java libraries

powsybl-network-store

This repository provides a PostgreSQL implementation of the IIDM grid model.

Reviewers: geofjamg, jonenst, obrix, rolnico, antoinebhs, AAJELLAL, AbdelHedhili, achour94, ayolab, basseche, celmhari, dbraquart, EstherDarkish, etiennehomer, EtienneLt, FranckLecuyer, ghazwarhili, klesaulnier, Mathieu-Deharbe, Meklo, sBouzols, SlimaneAmar, souissimai, thangqp, TheMaskedTurtle, Tristan-WorkGH
Committers: geofjamg, jonenst, obrix, antoinebhs, EtienneLt, SlimaneAmar, etiennehomer, jorismancini

powsybl-case-datasource

This repository provides network case management.

Reviewers: jonenst, etiennehomer, AAJELLAL, AbdelHedhili, achour94, antoinebhs, ayolab, basseche, celmhari, dbraquart, EstherDarkish, EtienneLt, FranckLecuyer, ghazwarhili, klesaulnier, Mathieu-Deharbe, Meklo, sBouzols, SlimaneAmar, souissimai, thangqp, TheMaskedTurtle, Tristan-WorkGH
Committers: jonenst, etiennehomer, EtienneLt, jorismancini

powsybl-metrix

This repository provides modules to run optimal power load flow on several network variants. Variants are generated through time series mapping on a base case.

Reviewers: marifunf, rolnico, klorel
Committers: rolnico, marifunf, klorel

powsybl-afs

This repository provides a standardized way to organize the data for a power system study, called AFS (Application File System). It supports some storage systems such as MapDB or Apache Cassandra. It is designed to be extensible using custom plugins to manage new types of data.

Reviewers: geofjamg, rolnico, marifunf, klorel, MatthieuSAUR
Committers: rolnico, marifunf, klorel, MatthieuSAUR

powsybl-hpc

This repository provides two implementations of the Computation API, to distribute the computation using MPI or Slurm Workload Manager.

Reviewers: rolnico, geofjamg, MatthieuSAUR
Committers: rolnico, geofjamg, MatthieuSAUR

powsybl-optimizer

This repository provides an interface to use the Ampl optimizer.

Reviewers: So-Fras, olperr1
Committers: So-Fras, olperr1

powsybl-eurostag

This repository allows importing Eurostag format files.

Reviewers: JB-H
Committers: geofjamg

powsybl-open-loadflow-knitro-solver

This repository is an extension to PowSyBl Open Load Flow allowing to solve the load flow equations with the non-linear solver Knitro instead of the default Newton-Raphson method.

Reviewers: p-arvy, Hadrien-Godard, jeanneArchambault, amakhen, mdeboute, jeandemanged, obrix
Committers: jeandemanged, obrix

C++ libraries

powsybl-iidm4cpp

This repository provides a C++ implementation of the IIDM grid model.

Reviewers: gautierbureau, rolnico
Committers: gautierbureau, rolnico

powsybl-math-native $GitHub release$

This repository provides a C++ implementation of sparse matrix, based on the SuiteSparse project. This 64-bits library for Linux, Windows and MacOS is packaged as a Jar file and published on maven central.

Reviewers: geofjamg
Committers: geofjamg

powsybl-metrix

This repository also provides a C++ implementation of optimal power load flow.

Reviewers: marifunf, rolnico, klorel, MatthieuSAUR
Committers: rolnico, marifunf, klorel, MatthieuSAUR

Microservices

powsybl-case-server

This repository provides a web service for network cases management. The powsybl-case-datasource repository is the client part of this service.

Reviewers: geofjamg, jonenst, antoinebhs, etiennehomer, AAJELLAL, AbdelHedhili, achour94, ayolab, basseche, celmhari, dbraquart, EstherDarkish, EtienneLt, FranckLecuyer, ghazwarhili, klesaulnier, Mathieu-Deharbe, Meklo, sBouzols, SlimaneAmar, souissimai, thangqp, TheMaskedTurtle, Tristan-WorkGH
Committers: geofjamg, jonenst, antoinebhs, etiennehomer, EtienneLt, SlimaneAmar, jorismancini

powsybl-network-store-server

This repository provides a persistent implementation of the IIDM grid model in PostgreSQL database. The grid model is exposed as a web service. The powsybl-network-store repository is the client part of this service.

Reviewers: geofjamg, jonenst, antoinebhs, AAJELLAL, AbdelHedhili, achour94, ayolab, basseche, celmhari, dbraquart, EstherDarkish, etiennehomer, EtienneLt, FranckLecuyer, ghazwarhili, klesaulnier, Mathieu-Deharbe, Meklo, sBouzols, SlimaneAmar, souissimai, thangqp, TheMaskedTurtle, Tristan-WorkGH
Committers: geofjamg, jonenst, antoinebhs, EtienneLt, SlimaneAmar, jorismancini, etiennehomer

Reviewers: jonenst, antoinebhs, AAJELLAL, AbdelHedhili, achour94, ayolab, basseche, celmhari, dbraquart, EstherDarkish, etiennehomer, EtienneLt, FranckLecuyer, ghazwarhili, klesaulnier, Mathieu-Deharbe, Meklo, sBouzols, SlimaneAmar, souissimai, thangqp, TheMaskedTurtle, Tristan-WorkGH
Committers: jonenst, antoinebhs, etiennehomer, EtienneLt, jorismancini

powsybl-ws-dependencies

This repository provides commons for web services.