I haven't been able to justify the cost of a battery as yet. (Maybe that would change if we get an EV for the next car).
When we first installed we deliberately targeted our household usage for peak producing hours - hot water, a/c, washing, drying, dishwasher etc and got a credit every quarter
More recently if it suits us we just leave the a/c 24/7 and don't hold back using the oven, dryer etc during network peak (most expensive) 4pm to 10pm period.
Despite becoming rather blasé with usage in recent times our quarterly bill was still sub $50. (As in the QLD $1000 subsidy credit went down to circa $950)
Maybe if one or both levels of gov come up with a decent subsidy we will put in a battery which besides eliminating all power costs will insulate us from potential power outages. We are in suburbia with very infrequent (as in nil in 18mths so far) outages so not a priority ATM,.
I didn't get a battery either. Have only had a smart meter since early October (shortly after the solar install) so I have no accurate idea of my historical consumption habits by hour/day/etc so my thinking was that it made more sense to use the new solar install for a year and get some hard data to model my utilisation and better understand what battery solution - if any - would make the most sense. No point spending that money and getting something that is either too big for your needs, not big enough, or simply unjustifiable on the whole when you run the numbers. Having said that, when I look at the sheer volume of energy I'm exporting to the grid since my install was completed (i.e. some 4.8MWh since late September), I suspect a battery will make a huge amount of sense!
Yeah, that's been a learning curve for me. Seeing the utilisation in real time via the solar panels app has been quite the eye opener, but it's also allowed me to become smarter with my usage habits. Have a gas cooktop and hot water system, so at present, can't do much to minimise those costs.
Current billing quarter will be my first full one with solar. I'm expecting a bill, but significantly lower than the same time last year despite having made considerably more liberal use of the a/c. I'm also aware that I can likely get a more cost effective deal on in terms of energy supply, so I'll be continuing to explore that as well. For now though, it's a case of enjoying the savings (versus my historical billing) and continuing to optimise how I use the energy I'm producing.