If I want battery storage at a later date, is it possible to buy a battery ready solar system?

If I want battery storage at a later date, is it possible to buy a battery ready solar system?

- Yes, you can add a battery to any existing solar power system. Most homes will need a solar panel system of at least 5kW, though the exact size will depend on your usage.
- If you installed your solar system several years ago, it’s likely that you will need to expand it. This is to ensure it generates enough power to charge the battery during the day. 
- There are different inverter arrangements required, refer: https://www.solarchoice.net.au/blog/hybrid-battery-ready-solar-systems