Power Grid Model v1.13.x Released: Expanded Power Flow Modeling and Observability
Power system modeling continues to play a critical role in grid planning, analysis, and operational readiness, especially as networks become more complex and more data-driven. Power Grid Model is designed to support this work with open, extensible software that emphasizes correctness, transparency, and real-world applicability.
The v1.13.x release series advances these goals with expanded power flow modeling capabilities, stronger observability checks for meshed grids, and continued improvements to documentation, internal implementation, and platform support. Together, these updates reflect ongoing community investment in both technical depth and long-term maintainability.
Release Highlights
- Added support for PV nodes for Newton-Raphson power flow calculations (see #1220 and the documentation).
- Multi-dimensional batch calculations using a Cartesian product of batch datasets (see #1201 and the documentation).
- Full observability check in meshed grids without voltage phasors (see #1085: and the documentation).
- Fixed modeling of Yyn transformers (see #1162).
- Various bugfixes (see, e.g.,#1084, #1137, #1160, #1214, #1245
- Achieved Open Source Security Foundation Best Practices Silver Badge.
- Improvements and fixes to the documentation.
- Various improvements to the internal implementation and compiler support.
Dropped Platform and Runtime Support
As agreed on during the last Power Grid Model meet-up and as outlined in the Release Strategy, support for the following platforms and runtimes was dropped. Please ensure your environment meets the new minimum requirements.
- Python 3.11 support (see also this announcement). Please refer to our Release Strategy for details.
If you experience any problems during migration or have any other questions, please contact the maintainers of the Power Grid Model project.
Full Release Notes
For the full release notes, please refer to v1.13.0.
Looking Ahead
The Power Grid Model v1.13.x release reflects continued progress toward more robust, transparent, and maintainable power system modeling. By expanding power flow capabilities, strengthening observability checks, and refining platform support, the project continues to align closely with real-world modeling and validation needs.
Users are encouraged to review the full release notes, assess any platform changes against their current environments, and engage with the maintainers if questions arise during migration or adoption. As with prior releases, feedback from practitioners and contributors remains an important input into the project’s ongoing evolution.
