Well here goes. My system is approximately 18 months old. For 1 year I operated it as a stand alone system without exporting to the grid. Since July this year (2024) I have started to export my excess energy ~ 500 kWh per month.
Description of the system - 22 x 435 W solar panels (9.35 kW) - Fronius PV Inverter 8.2 kWh. Victron Quattro 48/5000/70-2x100 inverter charger with Cerbo GX control. 6 x 100 Ah pylontech Li-Fe-PO4 batteries (30 kWh)