During April 2025, Phoet enhanced the evcc-io/evcc repository by improving documentation for tariff definitions, focusing on clearer integration with electricitymaps resources. Phoet updated Markdown-formatted links to both the electricitymaps website and API portal, enabling developers to access CO2 data and commercial API guidance more efficiently. The work emphasized documentation quality, link integrity, and cross-repository consistency, leveraging skills in YAML and Markdown. These changes aimed to streamline onboarding and improve accuracy for developers integrating tariff data. While the scope was limited to documentation, the updates provided clearer guidance and better traceability, reflecting a focused and methodical approach to maintainability.