We want to make interfaces with various PV-inverter factories and we prefer to do this with Node-Red, due to its flexibility. Some PV-inverter can connect with modbus (RTU or TCP) others with RS232. So Node-Red is the best way to go.
We found a way to create a Dbus instance via websocket, but some more has to be done to integrate this in the total VRM picture.
We are aware of the various python scripts available, but that is not the direction we to go.