Hybrid Solar System

Hi I have a 18kWh three phase grid connected installation that I am looking to add hybrid solar to cover off demand up to about 5kWh with a battery backed solar array.
I need to retain the grid connection for periods of high demand and the largest demand item I have which is the air source heat pump (11kW peak). The simple line diagrams show a connection to my DB from both the grid and my hybrid inverter. How does this work in reality? Is there more information available about how this is wired and switched? I have no intention of complicating matters by involving the electricitry company and trying to have an on-grid solution. Any help much appreciated!

Hi @Invicta

Can you post the single line diagram, and let us know the details of what product you currently have installed? @Svarky should be able to give you a bit of advice.