During November 2025, Malte Mrestorff developed ModbusTCP communication support for the Marstek Venus E within the evcc-io/evcc repository. This work expanded the device’s connectivity options by introducing TCP/IP support while maintaining compatibility with the existing RS485 protocol, ensuring a seamless upgrade path for current deployments. Malte’s approach focused on configuration management and network communication, leveraging YAML for configuration to enable remote diagnostics and scalable field installations. Although no bugs were addressed during this period, the feature laid a technical foundation for future enhancements, reflecting a focused and well-scoped engineering effort within a single month’s development cycle.