Really appreciate the info mate,

From my back of the envelope calculations you only spent an extra 50c a day for the first 18 days of the month ($9 total) being on the low usage plan over the standard usage plan, but saved you the same over the 13 you had solar ($7) so no big deal eh?

The solar's saving you ~$110 a month, assuming no change in overall usage, for a pay back of approx 9 years excluding all the additional variables such as opportunity cost, future power price changes etc (increase in house price, depreciation)...

I'd call that probably close to best case scenario as your panels are at their prime orientation for this time of the year (when solar strength is getting close to its strongest and longest), but offset by any demand shifting you can do as you get use to the system - shifting those 2KWh/day sold back @10c to sunshine hours would make a decent difference over time (Some people put the freezer on a timer and cycle it off over night when it usually remains closed, to come on again once the sun comes up... Not that I'm suggesting you try that!)

I think most interestingly for me is the relationship between the three 'plans' low, low with solar, standard without solar and how that influences your returns - it really puts an incentive on demand shifting towards daytime hours, or perhaps even grid-tied with a battery option (for those 7 KWh sold back to the grid each day).

Excuse me for taking your bill apart, again, I appreciate the amount of info re: numbers.