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Solar Power Calculator V2.0

I created this calculator as an easier to use and better looking version of my original solar calculator. Let me know if you think it is better, or even if you still prefer the original! Also if you think I should add any features, or if anything does not make sense, please drop me a line here.

You can use this solar calculator to get a "No BS" calculation of the cash flows, savings and financial payback that you can expect if you invest in a solar power system. Simply input your state, system size, and the price you have been quoted on the left, and the calculator chart will show you whether you will be be better or worse off with solar panels.

Unlike any other solar power calculator I am aware of, this tool includes all the things that you need to consider to get an accurate return on investment (ROI) calculation, such as the Opportunity Cost of not being able to invest your cash elsewhere, system degradation and inverter replacement after 20 years. Click on the "Advanced Options" to see all these settings.

If you are considering adding the system to your mortgage or getting a loan to cover the solar system cost, then simply click the relevant calculator tab to see if either of those financing options make sense.

I hope you find it useful! After using the calculator, if you'd like a custom quote on solar panels; I can help you there too. Get up to three solar quotes from Australia's leading installers, hand-picked by me and matched to your requirements and circumstances. This is also a free, no-obligation service.

My lawyer said I need a disclaimer - so here it is!


These calculators are intended to provide illustrative examples based on stated assumptions and your inputs.

Be aware that the default settings of the solar calculator will most likely not be applicable to your situation, and you should ensure you change all the inputs (including the "Advanced Settings") to reflect your own circumstances. You should also check that the Feed In Tariff settings are correct for your State, as they change regularly.

Changing any of the inputs can have a large impact on the solar calculator's outputs. It is particularly difficult to estimate the % of energy you will export, so you should try the calculator with a range of scenarios, e.g. 10% export, 50% export, 90% export etc, to ensure you understand the consequences of exporting more or less electricity as your usage patterns change.

Also, no one knows what the feed in tariff rates will be in the years ahead; so you can only guess. This is in the Advanced options. You should always model the effect of a 0c FiT after the current one ends as a worst case scenario, however unlikely!

Calculations are meant as estimates only and are not intended to be kept or used for any practical purpose. They are based on information from sources believed to be reliable and accurate and are not intended to be used as a substitute for professional advice.

The calculators are not intended to be relied on for the purposes of making a decision in relation to a solar power product or finance deal.

Consumers should consider obtaining advice from an Australian Financial Services licensee before making any financial decision regarding mortgages, loans or solar financing.

Actual outcomes will depend on a range of factors outside the control of SolarQuotes.

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