I am very jealous Moondoong. I only have enough north facing roof space for 6 x 235W REC panels = 1.41 kW. But I live on my own and don't use much energy. I can already see during summer time (I'm in Melbourne, so its not as good as Perth) that my net grid energy usage is now negative i.e. I am feeding more to the grid during the day than I am using over 24 hours. But might be a different story in winter in Melbourne...
