Our MD has been playing with computers since the days of Commodore 64 and Atari, and identifying patterns in parquetry on the assembly room floor aged 5 years old. We are sun-loving data geeks, spreadsheet afficionados, and computer linguists. So we're in a great position to help you with your solar calculations. Here's how we can help:

  • Like to create a compelling sales proposal? A proposal that accurately accounts for every detail in less than 3 minutes of your time? SunWiz is the creator of PVsell, which helps you professionally calculate the financial return on a solar investment.
  • Need some expert solar calculations done for you? We perform detailed designs that incorporate shading analysis and system optimisation. 
  • Need some solar software developed? We are solar software experts that have created many tailored programs for clients. 

Here's how we can help:

  • SolarROI - whether you're buying a PV system, or if you're trying to (honestly) sell one
  • PVsell - the industry gold-standard used by hundreds of solar businesses and the only ROI calculator with any decent accuracy.
  • Solar Calculations - we are expert users and developers of solar modelling software