It will only produce just a wee bit over what we consume, as inverter uses about 80w / hr. Think of it the same as water supply to a house. If not using it, it doesn't need to be brought in. Or petrol from tank to the engine.
When the inverter senses a need for electric, simple allows more electrons to enter and be dispersed.
Yes, charging the ESS is consumption. The March 2025 graph above shows what and where going and % used for feed the load.
Of course if we exported, then I could easily produce 1500kWh a month, on a good, sunny month. We we did test exporting, and it did produce 50kWh for the day, and wasn't even a clear day. We didn't own the MG ZS EV then.
The only 8 days we exported, before getting the digital meter.