In May 2025, lhw+github@ring0.de developed a configuration-driven integration for Sigenergy devices in the evcc-io/evcc repository, enabling support for hybrid inverters, PV systems, and battery storage over Modbus TCP/IP. Leveraging skills in configuration, embedded systems, and IoT, they designed a yaml-based template that collects and renders key metrics such as power, energy, current, and state of charge, adapting behavior based on usage mode. This work expanded device compatibility and streamlined onboarding for Sigenergy-enabled systems. The implementation demonstrated a focused, in-depth approach to interoperability, emphasizing maintainable configuration and robust data collection without addressing bug fixes during the period.