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Roseau Load Flow

A powerful load flow solver and static analysis tool.
https://github.com/roseautechnologies/roseau_load_flow

Category: Energy Systems
Sub Category: Energy System Modeling Frameworks

Keywords

2-phase 3-phase load-flow loadflow multi-phase multiphase newton-raphson power power-flow power-systems powerflow state-estimation three-phase

Keywords from Contributors

system

Last synced: about 15 hours ago
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Repository metadata

A powerful multi-phase load flow solver, by Roseau Technologies

README.md

Roseau Load Flow

CI
pre-commit
Documentation Status
CodSpeed

Roseau Load Flow is a powerful load flow solver and static analysis tool that offers:

  • Multi-phase, unbalanced power flow analysis
  • A performance optimized solver written in C++
  • A catalogue of real-world transformer and line models
  • An ergonomic object-oriented Python interface with unit-aware quantities
  • A comprehensive documentation with code examples
  • Advanced built-in plotting tools for network visualization on interactive maps and voltage profile plots
  • Real-world distribution network data samples in the library (with more available
    here)

In addition to the following unique set of features:

  • Floating neutrals for loads, sources, and transformers
  • Actual four-wire multi-phase modelling with no Kron's reduction and no transformations
  • Ideal or impedant ground connections at any point in the network
  • Flexible loads with Volt-Watt and Volt-VAr control directly in the Newton loop, which is more stable and results in
    a faster convergence than with the traditional outer loop approach
  • Out-of-the-box support for Single-Wire Earth Return (SWER), American bi-phase systems with center-tapped transformers,
    zero-sequence modelling, and other non-standard configurations

This project is compatible with Python version 3.12 and newer. The
installation instructions will guide you
through the installation process. If you are new to Roseau Load Flow, we recommend you start with the
getting started tutorial. You
can find the complete documentation at https://roseau-load-flow.roseautechnologies.com/.

License

This project is partially open source but using the solver requires a license. The license key
A8C6DA-9405FB-E74FB9-C71C3C-207661-V3 can be used free of charge with networks containing up to 50 buses. To obtain a
personal or commercial license, please contact us at
contact@roseautechnologies.com.

[!NOTE]
Licenses are given free of charge for students and teachers. Please contact us at contact@roseautechnologies.com
for more information.

Read more at License.

Network data

Roseau Load Flow ships with a sample of 20 low-voltage and 20 medium-voltage feeder networks. Each network is provided
with its summer and winter load points.

We also maintain a set of 150 MV feeders representative of the French distribution system at
https://github.com/RoseauTechnologies/Representative_French_Power_Grids. Each feeder is modeled with its downstream LV
networks. The repository also contains the cluster size that indicates how representative is each network of the French
distribution system. These networks are the result of the study
Representative MV feeders for the analysis of French distribution networks,
made and published by Mines Paris Tech.

Bug reports / Feature requests

For bug reports, feature requests, or questions, please open an issue on
GitHub

Credits

This software is developed by Roseau Technologies.

Follow us on:
Linkedin LinkedIn
GitHub GitHub

Owner metadata

GitHub Events

Total
Last Year

Committers metadata

Last synced: 1 day ago

Total Commits: 890
Total Committers: 7
Avg Commits per committer: 127.143
Development Distribution Score (DDS): 0.603

Commits in past year: 113
Committers in past year: 7
Avg Commits per committer in past year: 16.143
Development Distribution Score (DDS) in past year: 0.301

Name Email Commits
Ali Hamdan a****n@r****m 353
Benoît Vinot b****t@r****m 328
Saelyos s****t@g****m 169
dependabot[bot] 4****] 30
Louise Muller 3****o 7
Audrey Ficot a****t@r****m 2
codspeed-hq[bot] 1****] 1

Committer domains:

Issue and Pull Request metadata

Last synced: 1 day ago

Total issues: 105
Total pull requests: 498
Average time to close issues: about 1 month
Average time to close pull requests: 1 day
Total issue authors: 6
Total pull request authors: 6
Average comments per issue: 0.29
Average comments per pull request: 0.23
Merged pull request: 452
Bot issues: 0
Bot pull requests: 37

Past year issues: 7
Past year pull requests: 60
Past year average time to close issues: 4 months
Past year average time to close pull requests: about 12 hours
Past year issue authors: 1
Past year pull request authors: 6
Past year average comments per issue: 0.29
Past year average comments per pull request: 0.52
Past year merged pull request: 56
Past year bot issues: 0
Past year bot pull requests: 13

More stats: https://issues.ecosyste.ms/repositories/lookup?url=https://github.com/roseautechnologies/roseau_load_flow

Top Issue Authors

  • alihamdan (57)
  • benoit9126 (32)
  • YassineAbdelouadoud (9)
  • Saelyos (4)
  • cadouxfl (2)
  • Hellpoemer (1)

Top Pull Request Authors

  • alihamdan (310)
  • benoit9126 (113)
  • dependabot[bot] (36)
  • Saelyos (35)
  • audreyf9712 (3)
  • codspeed-hq[bot] (1)

Top Issue Labels

  • enhancement (64)
  • bug (26)
  • documentation (12)
  • single (3)
  • question (1)

Top Pull Request Labels

  • enhancement (342)
  • bug (99)
  • documentation (70)
  • dependencies (46)
  • github_actions (14)
  • performance (9)
  • single (9)
  • tutorials (2)
  • multi (1)

Package metadata

pypi.org: roseau-load-flow

Highly capable multi-phase load flow solver

  • Homepage:
  • Documentation: https://roseau-load-flow.readthedocs.io/
  • Licenses: BSD-3-Clause
  • Latest release: 0.15.0 (published about 1 month ago)
  • Last Synced: 2026-08-12T07:03:01.068Z (1 day ago)
  • Versions: 22
  • Dependent Packages: 0
  • Dependent Repositories: 0
  • Downloads: 965 Last month
  • Rankings:
    • Dependent packages count: 6.633%
    • Stargazers count: 16.639%
    • Downloads: 17.124%
    • Average: 20.3%
    • Forks count: 30.492%
    • Dependent repos count: 30.611%
  • Maintainers (2)
pypi.org: roseau-load-flow-engine

Highly capable multi-phase load flow solver engine

  • Homepage:
  • Documentation: https://roseau-load-flow-engine.readthedocs.io/
  • Licenses: LicenseRef-Proprietary
  • Latest release: 0.19.1 (published about 1 month ago)
  • Last Synced: 2026-08-12T07:03:01.529Z (1 day ago)
  • Versions: 19
  • Dependent Packages: 1
  • Dependent Repositories: 0
  • Downloads: 2,805 Last month
  • Rankings:
    • Dependent packages count: 9.879%
    • Downloads: 10.488%
    • Average: 28.522%
    • Dependent repos count: 65.199%
  • Maintainers (2)

Dependencies

uv.lock pypi
  • accessible-pygments 0.0.5
  • alabaster 1.0.0
  • astroid 4.0.3
  • asttokens 3.0.1
  • babel 2.17.0
  • beautifulsoup4 4.14.3
  • branca 0.8.2
  • certifi 2026.1.4
  • charset-normalizer 3.4.4
  • colorama 0.4.6
  • contourpy 1.3.3
  • covdefaults 2.3.0
  • coverage 7.13.1
  • cycler 0.12.1
  • decorator 5.2.1
  • docutils 0.22.4
  • executing 2.2.1
  • flexcache 0.3
  • flexparser 0.4
  • folium 0.20.0
  • fonttools 4.61.1
  • furo 2025.12.19
  • geopandas 1.1.2
  • idna 3.11
  • imagesize 1.4.1
  • iniconfig 2.3.0
  • ipython 9.9.0
  • ipython-pygments-lexers 1.1.1
  • jedi 0.19.2
  • jinja2 3.1.6
  • kiwisolver 1.4.9
  • latexcodec 3.0.1
  • markdown-it-py 4.0.0
  • markupsafe 3.0.3
  • matplotlib 3.10.8
  • matplotlib-inline 0.2.1
  • mdit-py-plugins 0.5.0
  • mdurl 0.1.2
  • myst-parser 5.0.0
  • networkx 3.6.1
  • numpy 2.4.1
  • packaging 25.0
  • pandas 3.0.0
  • parso 0.8.5
  • pexpect 4.9.0
  • pillow 12.1.0
  • pint 0.25.2
  • platformdirs 4.5.1
  • pluggy 1.6.0
  • prompt-toolkit 3.0.52
  • ptyprocess 0.7.0
  • pure-eval 0.2.3
  • pybtex 0.25.1
  • pybtex-docutils 1.0.3
  • pygments 2.19.2
  • pyogrio 0.12.1
  • pyparsing 3.3.2
  • pyproj 3.7.2
  • pytest 9.0.2
  • pytest-cov 7.0.0
  • python-dateutil 2.9.0.post0
  • pyyaml 6.0.3
  • requests 2.32.5
  • roman-numerals 4.1.0
  • roseau-load-flow 0.14.0
  • roseau-load-flow-engine 0.19.0
  • shapely 2.1.2
  • six 1.17.0
  • snowballstemmer 3.0.1
  • soupsieve 2.8.3
  • sphinx 9.1.0
  • sphinx-autoapi 3.6.1
  • sphinx-basic-ng 1.0.0b2
  • sphinx-copybutton 0.5.2
  • sphinx-inline-tabs 2025.12.21.14
  • sphinx-math-dollar 1.2.1
  • sphinxcontrib-applehelp 2.0.0
  • sphinxcontrib-bibtex 2.6.5
  • sphinxcontrib-devhelp 2.0.0
  • sphinxcontrib-googleanalytics 0.5
  • sphinxcontrib-htmlhelp 2.1.0
  • sphinxcontrib-jsmath 1.0.1
  • sphinxcontrib-qthelp 2.0.0
  • sphinxcontrib-serializinghtml 2.0.0
  • sphinxext-opengraph 0.13.0
  • stack-data 0.6.3
  • traitlets 5.14.3
  • typing-extensions 4.15.0
  • tzdata 2025.3
  • urllib3 2.6.3
  • wcwidth 0.2.14
  • xyzservices 2025.11.0
.github/workflows/ci.yml actions
  • actions/cache v5 composite
  • actions/checkout v6 composite
  • actions/upload-artifact v6 composite
  • astral-sh/setup-uv v7 composite
.github/workflows/pre-commit.yml actions
  • actions/cache v5 composite
  • actions/checkout v6 composite
  • actions/setup-python v6 composite
  • pre-commit/action v3.0.1 composite
pyproject.toml pypi
  • certifi >=2023.5.7
  • geopandas >=1.0.0
  • numpy >=2.0.0
  • pandas >=2.1.0
  • pint >=0.21.0
  • platformdirs >=4.0.0
  • pyproj >=3.3.0
  • roseau-load-flow-engine ==0.19.0
  • shapely >=2.0.0
  • typing-extensions >=4.6.2

Score: 14.538244695709215