> Where I live its about 25c (of Australian Dollar) for 1kwh but you only get 7c back

I've read about places that don't actually do "net metering" and implement this with two separate meters, one for inflow and one for outflow.

Is that the case where you are? Are there any time-of-use options available that might sweeten the deal?

> So a real battery would be much preferable.

Assuming it were free (even to purchase, with only charge/inverter efficiency losses), of course it would. However, as much of the discussion in the thread points out, storage is very capital (if not maintenance) intensive, even at utility scale.