In order for Grott to intercept the data you must re-configure your ShineLink box or dongle to ship data to Grott rather than directly to the Growatt servers. The instructions on this site describe ...

This sketch runs on an ESP8266 and reads data from Growatt Solar Inverter over RS485 Modbus and publishes the data over MQTT. This code can be modified for any Gorwatt inverters, it has been tested on ...