Oh, and there's a "new thought" on how to balance power production when you're on the Nett FIT that NSW currently has.
Traditionally on a Gross FIT you would maximise production by pointing all panels north, to maximise their exposure to the sun's rays. Tilting them more in winter is good if you can.
Now it is sometimes suggested that you should have half your panels pointed more east, and half more west, to balance the pickup over the morning and afternoon periods. So instead of a huge peak in the middle of the day and two lower shoulders, you have a flatter production curve from earlier in the day to later in the day, meaning you don't have to shift as much load into the midday period.
If you haven't had an install done yet, and if you have the opportunity to do this kind of install, it may be worth considering.