What sized system has the fastest payback time?
Payback times are affected by your “daytime electricity usage” and the system cost.Under a NET feed in tariff (as in QLD) you only get payed a higher rate ($0.44 / kWh) for electricity fed to the grid which is in excess of your own power requirement.Until you overcome your own power usage, cost savings under a NET feed in tariff are only made at the rate you pay for electricity (e.g. $0.18 / kWh).Therefore, payback time will be dependent on both your “daytime electricity usage” and the size (or more importantly) the output of your solar generator.In general larger systems have better payback times, unless you use very little power during the daytime.After we do a site analysis we give advice for payback times based on a actual site conditions.Refer to our Solar Bonus Cost Savings Page to understand how cost savings are made under a NET feed in tariff.
