For those who want to use the Homey app, Grafana and Home Assistant with Solaredge Modbus:
Install Modbus-Proxy on a rpi or with docker (for example on a Synology NAS)
Use the modbus address of the Modbus-Proxy in the Homey app.
https://github.com/michbeck100/modbus-proxy
I use it with 3 clients connecting to it every 2 seconds, works perfect!