Add Growatt 800m-x inverter in Home Assistant

I’d like to integrate a Growatt 800m-x inverter into my Home Assistant. The problem is that the inverter also needs to work with an app called Solakon. Parallel operation must be possible. Is there a ready-made solution for this in HACS?

Not guaranteed (as the list of inverters is not well maintained) but you could try to use grott, this reads local output and could (if configured) forward that to the outside world too.

EDIT:
johanmeijer/grott: Growatt inverter monitor

There is a container version and an add-on one