To embrace sustainability. To battle climate change. To reset how this country is powered.

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Our story

solarZero's rich history as pioneers of innovation in solar energy development began in Christchurch in the 1970s, with the company’s early beginnings as Thermocell, a solar water heating company that was started by Professor Arthur Williamson and his colleagues from the University of Canterbury.

Under the guidance of founder Andy Booth, the company evolved to become New Zealand’s leading solar energy business with offices in Christchurch, Nelson and Auckland. Over the past 35+ years it has put more solar systems on Kiwi homes and businesses than any other company.

Driven by strong values and a mission to help Kiwis access smarter, cleaner energy, the company continues to innovate and deliver on the shared value of Kaitiakitanga - the Maori principle of guardianship. It’s a constant reminder we have a duty of care to look after our place, our people and the generations to follow.

A cleaner, brighter New Zealand

We are on a mission to accelerate New Zealand’s transition to be 100% renewable and lower the cost of energy for Kiwis.

This mission is aligned to New Zealand’s target of 100% renewable electricity generation by 2035 and carbon neutrality by 2050. With the demand for electricity in New Zealand likely to double by 2050, greater capacity for additional renewable-sourced energy will be needed to achieve this target. This is where we come in.

NZ’s most trusted solar energy business

Founded in 1981. 38-years-old and counting

Reputationally respected. Multiple awards for innovation and service

More solar systems installed than any other solar provider

A certified Toitū climate positive organisation

In the Top 5 fastest growing green companies in NZ

Our values

We are a proud mission-led kiwi business. As a green start-up it’s important for our culture that we live and breathe our values – and that they guide our actions day by day.

Our sustainable practices

We’re striving to reduce our impact on the environment – which includes 100% carbon neutrality in our operations

Toitū climate positive

A certified Toitū climate positive organisation – taking climate leadership to the next level.

Carbon neutral hardware

After two years powering your home, the solarZero system will have generated the same amount of energy as was required to manufacture

Green company

solarZero is recognized as one of the top-5 fastest-growing green companies in New Zealand

Carbon credits

To achieve zero carbon certification we purchase carbon credits from local initiatives including the Hinewai Nature reserve

Our EV fleet

After investing in our fully electric company vehicle, we are committed to replace all future retiring vehicles with electric or hybrid versions where possible

Creating the GridforGoodTM

Every customer is doing their bit in the fight against climate change and reducing carbon emissions in New Zealand.


Customers powering their home with cleaner, greener energy.

12,107 tonnes

 Of carbon prevented from entering the atmosphere*


Number of trees you would need to plant to achieve these carbon savings

98.4 GWh

Of solar energy generated by solarZero customers

*Based on the calculation of 15 tonnes of carbons savings per household over 20 years

Proudly partnering with brands committed to sustainable business

2 Degrees

Our green credentials

Going beyond net carbon zero with the Toitū climate positive certification programme is key to kaitiakitanga, and our commitment to leave the world better than we found it.  

Earning and keeping our climate positive certification means we measure and report all operational and value chain emissions each year to globally recognised standards. We follow a clear, science-based decarbonisation strategy – setting and achieving our reduction targets, and offsetting 125% of our unavoidable emissions, via verified carbon credits.

Along with being Toitū climate positive certified we’re proud members of SEANZ (sustainable Electricity Association of New Zealand) the Sustainable Business Network and the EECA Gen Less initiative.

Toitū climate positive
Sustainable business network

Company milestones

A small team led by Professor Arthur Williamson invents NZ’s first solar heat pipe.

Introducing the solarZero team

Andrew founded solarZero in 2008, growing the business from start-up to one of the fastest-growing green companies in New Zealand. Andy’s passion for the environment and commitment to helping New Zealand move to 100% renewable energy, provides the vision and values solarZero is built on.

Matt is responsible for solarZero achieving its strategic objectives and achieving its mission of accelerating NZ's energy transition to 100% renewable electricity by 2030. He is passionate about creating a culture of innovation and performance and delivering the best experiences for solarZero's customers, staff and partners.

Cat leads our overall people strategy ensuring our people thrive at work. She brings her experience of transformation and change to help create a culture that delivers leading people and customer experiences.