Then you have to rather look into ha actually. The basics on the esphome side shouldn’t be more than the “Solar_Energie” Sensor the way you have it already.
You can then create various utility meters (like daily, weekly, monthly, … consumption) in ha under this link:
For a basic visualization the energy dashboard should already have you covered
More advanced stuff you need to build yourself or dig a little bit in the forum to find stuff like this for example: