Contributed to the FZJ-IEK3-VSA/FINE repository by developing comprehensive API documentation for the conversionPartLoad subclass, including a dedicated Subclasses page that summarizes specialized component formulations to improve API discoverability and onboarding efficiency. Focused on documentation accuracy and maintainability using Markdown and Python, ensuring consistency across the API surface. In addition, addressed a robustness issue in pie chart centroid extraction within the plotting functionality, enhancing reliability for visual analytics. Expanded test coverage by implementing a suite of unit tests with pytest, leveraging libraries such as geopandas, matplotlib, and pandas to validate outputs and reduce maintenance risk for future development.