About SunWiz

Company Overview

SunWiz is an Australian solar consultancy, founded by Warwick Johnston in 2009.

We spend our time crunching solar numbers into useful industry insights and developing strategies to help solar businesses succeed. We offer solar market intelligence products, guidance, software, assistance and reports – all carefully designed to help the solar industry to grow and prosper.

SunWiz spent its first 8 years based in Byron Bay, before moving to Eltham in Melbourne’s North-east in 2015 – though our clients are all around Australia. We also attend and present at most solar industry events in Australia and also some around the world.

We are open for business from 9:00am to 5:00pm on weekdays.

Warwick started SunWiz in order to make a positive impact on the solar industry in Australia. Our mission is to help solar businesses grow and prosper sustainably with the ultimate goal of seeing solar panels on every roof in Australia.

Our products and services help solar businesses to operate more effectively and efficiently with intelligent analysis of key information.

The types of solar businesses we help include:

SunWiz "top dog" Sunny at a solar meeting


The office mascot and aptly named “Sunny” clearly lends his broad solar wisdom to everything we do.

SunWiz Company History

The SunWiz Team – Find out the faces behind the numbers! Our team has a broad solar industry experience which shows up in just about everything we do.

Our Story – Find out more about SunWiz and how it has evolved over the past years, including our many industry contributions and success-stories.

Our Clients – We’ve helped some of Australia’s biggest players in the solar industry! Just take a look at some of our customers whom we are proud to have been able to assist with our strategic solar solutions.

Contact us – Get in touch with us! We love hearing from you whether you need a solution with some solar challenges or you want to chat about anything solar-related.



  • Market Intelligence With SunWiz 2009
    Providing market insights which have assisted hundreds of solar installers

  • SunWiz Consulting & Guidance 2009
    Provided expert technical advice to expanding solar franchise

  • Solar Engineering 2009
    Studies & proposals (including module comparisons, proposal preparation, site modelling and system compliance analyses)

  • Solar Design 2010
    More than 200 solar PV system designs including complex site-specific designs

  • Solar Consulting 2010
    Advisor to Sunshine Coast Regional Council on solar rollout

  • Solar Consulting 2011
    Presentation for the CEC on effects of impending STC collapse

  • Solar Engineering 2010
    Design of one of Australia’s most sophisticated solar power systems – Carrara stadium

  • Solar Consulting 2011
    Review of methodology and results of forecasting of Solar Bonus Scheme for CEC

  • Solar Intelligence Since 2012
    Detailed commercial PV market analysis in Australia

  • Consulting 2013 – 2014
    STC forecasting for ORER

  • Engineering 2015
    Released Australia’s largest database of commercial solar projects