It's energy.
homegrown.
Meet Madeleine Sami.
Madeleine’s solar story will resonate with thousands of Kiwi homeowners: rising power costs, the search for trustworthy advice, and a transition to an energy solution that gives control back to the homeowner.
Trusted solar expertise across NZ
Why choose zen
Experience the expertise, quality, and commitment that make Zen the trusted choice for solar power in NZ, from installation through to long-term support.
New Zealand-owned business, proudly serving Kiwis since 2014
1,300+ installations across New Zealand, from homes to large-scale projects
Over 50 years of combined solar engineering and technical design expertise
Customised solar solutions designed to match your unique energy needs
World-leading products chosen for performance and durability
Rigorous technical reviews are completed on every installation
Lifetime support to maximise your solar investment's value and performance
ZEN is Solassure Certified
Independent assurance of high standards in solar design, installation, workmanship and ongoing customer support.
Customer reviews


Awards & recognition


Memberships & affiliations



Discover your ideal solar system
TAILORED SOLAR SOLUTIONS
Our solar systems help you lower energy costs, increase independence, and maintain reliable power while supporting long-term sustainability.
PANEL ONLY SOLUTIONS
Grid connection
Stay connected to the grid while reducing energy costs.
SOLAR WITH BATTERY
Flexible power with backup
Get battery storage for reliable energy during outages.
Off-griD SOLUTIONS
Energy independence
Go fully off-grid with a self-sufficient solar power system.

Residential & Commercial solar expertise
Powering homes and businesses in NZ
With over 1,300 installations, ZEN delivers solar power tailored to the needs of homes, farms and businesses.
SOLAR FOR HOMES
We specialise in providing residential homes with solar battery solutions.
We customise your solution based on modelling your energy usage.

ZEN's solar installation process
Our end-to-end process

ZEN SUPPORT
AFTERCARE
Solar is a 25-year relationship. We'll be here through all of it.
A specialist customer care team
Reach a small team who know solar and know your system. NZ hours, Mon–Fri, 8:30am–5pm.
You’ll deal with one team – us
We handle diagnostics, warranty claims, and parts across your whole system. No dealing with overseas suppliers.
5-year workmanship warranty
On top of manufacturer warranties (up to 30 years) on panels, inverter, and battery. Contractual, not just a promise.
Reviews from long standing customers
CLEAN ENERGY, HAPPY CUSTOMERS
Ready TO take control of your power?
Start your switch to solar today. Get in touch and we can support your journey to energy savings, sustainability and self-sufficiency.
Frequently asked questions
What is a grid-connected solar power system?
Solar panels are installed on your roof and produce electricity in DC current. This electricity is converted to AC current through your solar inverter and then delivered via your house’s switchboard, to your appliances, such as your television, hot water cylinder, fridge and heat pump. Any excess electricity generated will be sent back to the grid, for which you will get a credit on your electricity bill if your electricity retailer has a buyback offer.
How long does a solar system installation take?
The length of installation depends on the size of the solar power system, whether it includes batteries and the roof condition, but will typically take anywhere between 1 day for a grid-tied installation and 2 days for a more advanced battery based system.
Are solar panels effective in winter?
They are effective during the winter months; however you will notice a considerable drop on the overall solar generated compared to the summer months. This is normal due to the height of the sun in the sky and there being less sunlight hours over the winter months.
Is my house suitable for a solar power system?
If your roof is in good condition, and gets a lot of sun, it is probably a good candidate for solar. We do not recommend installing solar on old roofs. The panels are expected to last for over 25 years so it is not recommended to install them on a roof that may need replacing during the life of the system.
Are solar power systems good for the environment?
Solar power is the most abundant renewable energy resource on Earth. Solar power systems do not emit any CO2 and their costs have been consistently reducing. In contrast, fossil fuels are being depleted, with unpredictable prices that are typically trending upwards. Additionally, they are not renewable. Solar power is the clear answer for the future of energy as it localises energy generation at the point of consumption and passes the power to choose back to the individual home owner. Although many large entities are not yet committed to solar power, a household can proactively choose to benefit from having a solar power system on its roof.
What is the buyback rate?
Most power companies currently pay at 8c/kWh for electricity exported to the grid. You will need to contact your power company to confirm their buyback rate.
How much will I save?
Whilst there are costs to you in purchasing and owning the solar system, solar power will help you to reduce your monthly electricity spend by offsetting the energy usage in your house. How much your monthly electricity bill will reduce by will depend on a number of factors, including the size of the system that you install, how much electricity your system generates, and how much electricity you use during the day.
What size are the solar panels?
The size of the system is often determined by the available roof space of the property and size of the system you require. As a guide, most panels are 992mm wide by 1640mm high in size. Approximately 8 m2 of roof space is required per 1 kW of solar panels.
How much maintenance do solar panels require?
Solar photovoltaic panels require little maintenance. Your panels can build up dust and other material over time. Solar panel cleaning is not that different from cleaning your windshield. This can be done with water and a soft brush.
Will solar panels operate if we experience a powercut?
Yes the solar panels will still produce power however the solar inverter requires you to be connected to the grid for the inverter to operate and provide power to your home. This is a safety mechanism to protect appliances at your property for the safety of network maintenance personnel.
Which direction should my solar panels face?
Solar panels that face north get the maximum amount of sunlight during daylight hours to generate electricity. Placing panels on the east or west-facing roof will still produce a substantial amount of power. It is not recommended that you install panels with a southerly aspect.
What if my property is 3-phase?
Three phase properties may require a 3-phase solar system. With a three phase solar system there may be instances when you will import energy on one phase while exporting energy on another phase. This is because all three phases operate independently of one another. You may want to ask your installer to check the loading on each phase as part of the installation process.

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