Get started with the basics

What to consider before you buy

Ready to make the switch to solar? Here's what you need to consider first.

Solar and energy efficiency for business

Make an impact on your bottom line. Find out how we could help your business save.

How much could solar save you?

To illustrate how much you could expect to benefit from getting solar, the table below outlines an estimated average payback period and bill savings you may receive based on three common solar system sizes.

Savings will depend on your household’s energy usage during the day. In this table, an average household consumption of 24kWh per day has been used. To see how this compares with your household consumption, refer to the "Electricity usage summary" section of your latest electricity bill. This should indicate an "Average daily usage" amount in kWh.

Sample system size Average system cost Estimated bill savings Estimated payback period
3kW $3,500 - $4,690 Low range: $926

High range: $1,254
Low range: 5.1 Yrs

High range: 2.8 Yrs
6kW $6,000 - $7,405 Low range: $1,407

High range: $1,768
Low range: 5.3 Yrs

High range: 3.4 Yrs
9kW $9,000 - $11,710 Low range: $1,889

High range: $2,282
Low range: 6.2 Yrs

High range: 3.9 Yrs

The information provided in this table is general in nature. For information that applies to your individual circumstances, request a call back from one of our third party solar providers.

Assumptions we used for the estimates

We have used the below to calculate an estimated range for bill savings and system ROI.

  • Average grid electricity tariffs is based on AGL’s standing offer as at July 2020 which could have a variance of up to 18% depending on your distributor patch in VIC, and up to 7% in NSW
  • Feed-in tariffs based on AGL’s standard retailer Feed-in Tariff as at July 2020
  • System cost estimates are derived from Solar Choice state pricing figures based on Premium systems, correct as of April 2019, as outlined from the Clean Energy Council website

Assumptions based on:

  • PSH annual averages by locale taken form 'Australian Solar Energy Society 2006'
  • Maximum offset during solar self-consumption of 90% (allowing for load peaks)
  • Typical household energy usage taken form CSIRO 2012/13
  • No seasonal variance in load consumption
  • No Inverter clipping of the array output
  • Roof angle of 30 degrees, north facing
  • The calculation outlined in the table does not allow for additional self consumption that a solar battery would offer
  • Panel efficiencies are assumed to not be affected by soiling by more than 5%

"HIGH" range based on System efficiency 80%, Solar Self-Consumption 90%. "LOW" range based on System efficiency 75%, Solar Self-Consumption 30%

If your electricity usage is significantly higher than 24kWh per day, you may see a more efficient payback period with a larger sized system.

  • A low range estimates that you are not usually home during the day and 30% of solar generation is used
  • A high range estimates that you are mostly home during the day and 50% of solar generation is used
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