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📝 Release notes

Info

The features and bugfixes listed under Upcoming aren't released yet but will be included in the next version. If you'd like to try them early, you can switch to the develop branch. Just keep in mind that it's not stable and may contain issues. All previous releases are already available on the main branch.

Upcoming

Fixed

  • fix build skeleton error and only use build skeleton when the project folder is not initialised.(88 by @RichChang963)

Changed

Notes

v1.1.1 (2026-02-24)

Fixed

  • Fix the formulation of the maximum power generation constraint and enabled the capacity factor constraint for the base year (79 by @nhlong2701)
  • Fix index issue in all hourly tables in storage flows (81 by @RichChang963)
  • Fix an issue where the energy component of storage links was not activated, and correct the cost and capacity calculations for these links (83 by @nhlong2701)

v1.1.0 (2026-02-17)

Fixed

  • Allow user to clean up/remove default custom constraints from scenario_config.yaml.(67 by @nhlong2701 & @RichChang963)
  • Prevent accidental submodule/subproject commits by ignoring data directories except for templates and sample data (70 by @nhlong2701)

Changed

  • Added a new documentation file explaining how to set up a decommissioning/retrofit approach in pypsa-spice (68 by @nhlong2701)
  • Added a new documentation file explaining how to add new technologies in pypsa-spice and to better explain the model code and data repositories set up (73 by @RichChang963 & @nhlong2701)
  • Add 'ALL` option in the charts of pypsa-spice-vis (72 by @RichChang963)

v1.0.0 (2026-01-19)

This is the first tagged release of PyPSA-SPICE 🥳 and represents a complete, fully functional implementation of the model. It establishes the baseline for all future development and includes the core model formulation, execution and post-analysis workflows, the scenario configuration system, and comprehensive documentation.

Fixed

  • Resolve the filtering issue with regional filters when adding load for non-electricity ones and missing interconnection (51 by @nhlong2701)

Changed

  • Update PyPSA version to 1.0.6 and refactor code to adapt to new changes (54 by @nhlong2701)
  • Update scenario_config workflow and template structure (58 by @RichChang963)
  • Add maximum power generation constraint (59 by @RichChang963)

Notes

  • PyPSA version upgrade: We have upgraded PyPSA to v1.0.6 and encourage users to upgrade their environments (using conda env update -f envs/environment.yaml --prune) to ensure full compatibility with the latest features and improvements.
  • Simplification of initial project setup: The build_skeleton rule now automatically generates a scenario_config.yaml file, simplifying initial project setup.
  • New parameter in custom constraints: A new boolean control field, active, has been introduced for defining custom constraints within scenario_config.yaml. Users should update their configuration format as described in the documentation to maintain compatibility and avoid configuration errors.