I am planing to have 6 kW of power system with batteries to compensate your house requirement in peak hours. Where do I want to put The online meter to minimise the grid energy. Also I could use the battery power during the night?What number of a hundred Amph batteries( https://solarinstallationwesternaustralia.health.blog/2024/09/19/exploring-the-benefits-of-a-30kw-solar-system-for-large-properties-in-wa/