During August 2025, Timo Tomasini developed the Zaptec Charger Passive Mode feature for the evcc-io/evcc repository, focusing on enhancing interoperability with external load management systems. He implemented a technical approach where evcc delegates current adjustments to external controllers, while retaining responsibility for charging authorizations and blocking to prevent operational conflicts. This design allows demand-response deployments to integrate more smoothly with building or utility load management workflows. Timo utilized Go and YAML for API integration and configuration management, demonstrating depth in embedded systems. The work addressed a specific integration challenge, resulting in a robust solution tailored for complex energy management environments.