February 2026 monthly summary for open-energy-transition/pypsa-eur and PyPSA/pypsa-eur. Focused on delivering cost-data-driven production cost scaling, upgrading methanol configuration to cost-based data, improving documentation navigation, and aligning industry data year to 2023. All changes include release notes and code quality improvements to support maintainability and accurate business forecasting.

January 2026 monthly summary for open-energy-transition/pypsa-eur focused on delivering targeted capital-cost modeling improvements and refactoring in the myopic optimization workflow, along with release-note documentation. The work enhances cost accuracy, code maintainability, and readiness for future extensions.

Monthly summary for 2025-08: Key feature delivered was enabling Expandable CCGT by default in the PyPSA-eur configuration, with release notes updated to reflect the change. This improves modeling flexibility and reduces manual setup for users running expansion-ready CCGT scenarios. No major bugs fixed were documented this month for this repository. Overall, the change enhances modeling fidelity, accelerates scenario analysis, and strengthens the business value of PyPSA-eur by simplifying configuration and ensuring consistent default behavior across deployments. Technologies demonstrated include Python-based configuration management, Git-based release workflow, and thorough documentation through release notes.

April 2025: Focused maintenance delivering two targeted bug fixes in PyPSA/pypsa-eur. Impact: improved documentation accuracy and more predictable scenario management, reinforcing reproducibility and user trust. Delivered fixes include a citation formatting correction in docs and a wildcard handling fix for the base scenario in build_renewable_profiles, with an accompanying release note for the latter.

January 2025 monthly summary for PyPSA/pypsa-eur: focused on data quality improvements and alignment to ensure simulations use current policy targets and accurate TYNDP project data.