Correctly Integrating Wallbox into energy board

I have the following situation: my house has a Shelly meter that measures grid consumption and solar feed-in. Now, there is a technical room in the garage where the main fuse of the house is located (this is before the shelly, which is located inside the house). The supply line for the Easee Wallbox is connected to this main fuse.
How do I include this energy consumer correctly into the HA energy board as the Shelly meter does not register the consumption, and consequently, doesn’t know how much is taken from solar and how much from the grid?

Thank you for your help :slight_smile: