Your details
Your estimated savings
$1,553per year
3.9year payback, estimated
Detailed breakdown
- Estimated daily solar production
- 26.9 kWh
- Your daily usage
- 17.4 kWh
- Estimated bill reduction
- 77%
- System cost (after rebate)
- $6,000
- Annual CO2 offset
- 6.9 tonnes
Based on your 6.6kW system in New South Wales
A payback under 4 years is a strong result. The STC rebate steps down every 1 January, so the same system earns a smaller rebate the longer you wait.
Assumes 4.8 peak sun hours a day, the New South Wales average, a 15% allowance for inverter, heat, dust and wiring losses, exports paid at 5c/kWh and the system cost shown, after the STC rebate.
These estimates are indicative only. Actual savings depend on many factors including your specific usage patterns, feed-in tariff rates, and installation specifics. Get a personalised quote for accurate figures.
Get an accurate quote for your roof
A calculator works on averages; a written quote works on your roof. One Why Solar Approved installer, one free written quote, and fifteen minutes with a solar expert before you sign.
See my rebateHow this solar calculator works
This calculator estimates your annual solar savings based on your quarterly electricity bill, state, system size, and self-consumption rate. It uses average peak sun hours for your state and current electricity tariffs to project savings over 25 years.
Self-consumption is the most important factor in your savings. The more solar energy you use directly (rather than exporting to the grid at low feed-in tariff rates), the higher your return. Typical self-consumption ranges from 30% to 60% without a battery, and 70% to 90% with one.
