Solar Choice Commercial Solar Payback Calculator

Welcome to the Commercial Solar System Payback Calculator!

Please note that because commercial electricity bills are significantly more complex and variable than residential electricity plans, the results that this calculator produces are highly indicative, and should not act as a substitute for more detailed analysis. This complexity also means that there is a higher risk of input errors or omissions. If you have any questions about how to use this tool, please get in touch with us on

More notes about this tool

  • To improve usability for a general audience, this tool uses a number of assumptions and generalisations. For example, there are only two consumption patterns and tilt angles to choose from.
  • At this point in time, the maximum system size that our calculator will recommend is 100kW. If you believe your business would benefit from a larger system, please get in touch to discuss your project in more detail.
  • Please enter values in the white cells only.


Our team can put together a more comprehensive analysis based on your power bills. Get in touch for a free indicative business case & solar quote comparison.


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Since 2008 Solar Choice has consulted with over 3,000 businesses around Australia and helped develop over 800MW solar commercial and solar farm projects.