I'm in Perth. Our feed in tariff changed in July to 10c/kWh between 3pm and 9pm, and 2.5c/kWh at other times. Use tariff is 26.2c/kWh. I'm pretty sure our solar will pay itself back in under 5 years, but we have a 25 year warranty on the panels.
My parents are building outside of Adelaide and they've decided to go off grid (solar + battery + backup generator). Their expected payback period is (iirc) 8 years, with a 10 year warranty on the batteries and a 25 year warranty on the panels. They're expecting to have to run the generator once a year or so.
My parents are building outside of Adelaide and they've decided to go off grid (solar + battery + backup generator). Their expected payback period is (iirc) 8 years, with a 10 year warranty on the batteries and a 25 year warranty on the panels. They're expecting to have to run the generator once a year or so.