I've been looking into this recently and discussed it with Trevor Birrell (Renew Qld). Community Batteries are a reality in Europe, but only on trial in Perth, according to my information. Do you have any further you can add that might help me start the process of installing a community battery in my neighbourhood, Kevin? This is the only link I've found so far:
https://arena.gov.au/knowledge-bank/implementing-community-scale-batteries/