Lets take the first step

Please complete 8 quick questions and 4 photos so that we understand your home property.
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Save up to 50% On Your Home Power Cost

Save up to 50% on power usage for life with OneEnergy's affordable solar water heating—now featuring groundbreaking technology (learn more) in NZ. Imagine the savings over 25 years and the significant environmental benefit.

Let's Do it !

$4,995 (incl GST) fully installed, and you can easily fund 100% of your Hot Water with a Green home Loan from ANZ, ASB, BNZ, Kiwibank, and Westpac *

Solar Water Heating Benefits

Cut your Cost of Living

Cut Power Usage by up to 50%, allowing the system to pay for itself with the savings under 5 years.

Worry Free

Enjoy a no-maintenance solution with our intelligent hot water solution.

Simplicity

Re-power your existing hot water cylinder to use and store solar energy free from the sun. No need to touch your plumbing or modify your hot water cylinder.

Take Control

Easily track energy savings and system performance with smart monitoring, so you always know the value you’re getting.

Less Carbon Footprint

By switching to solar, you’re actively reducing greenhouse gas emissions and supporting New Zealand’s sustainability goals.

Grid Independence

Reliable even during power outages, our system ensures you have access to hot water regardless of grid power availability.

Make it Happen

One Energy's revolutionary approach to solar water heating makes it easier and more affordable than ever to transition to solar energy.

Let's Take the First Step

8 quick questions and 4 photos to allow us to understand your home property

Let's do it!

Custom Proposal

We'll provide a custom proposal showing the layout of the panels and your hot water energy savings

Easy Installation

After you approve the proposal, our expert installation team will handle everything from start to finish. With an installation done in under 3 hours, you’ll have a reliable solar water heating system with immediate savings.

Enjoy Savings & Sustainability

With your new One Energy system, you can enjoy lower energy bills, a reduced carbon footprint, and dependable hot water year-round—even on cloudy days.

Ongoing Support

Our team is here to support you after installation, ensuring your system continues to work at its best. We’re just a call away if you ever have questions or need assistance.

What Our Customers Say

Joe

Nelson

"In December last year we had the OneEnergy system installed in Nelson for a cost of $5000. To date, the grid booster only activated once during a three day spell of inclement weather. Our monthly power bills are now less than $100. I would rate this as one of our best investments."

Jean

Matamata

Thanks for a great product. Using this in conjunction with my existing hot water cylinder is a game changer, for the better. The installation service from the company is first class.

Bryan

Hamilton

"Very happy with the installation. The system is working extremely well and I would definitely recommend to everyone."

Suzanne

Christchurch

"Thank you for the great service. It was a daunting decision to invest in a new product but not looking back. Great product and saving money all the way!"

Common Questions

What is the cost and return on investment?

A full installation will cost $4,995 (including GST), with an expected payback of under 5 years, and you will have ample hot water for many years thereafter.

Will I be locked into a long term contract for my system ?

Absolutely not, the system is owned outright by you to enjoy the benefits of hot water powered by the sun for many years.

Will I have hot water on cloudy or rainy days?

Yes. If there is not sufficient Solar heating, the system will automatically top-up with grid power to make sure you are never without hot water

Can I use solar panels to heat water?

Yes, with our advanced technology, you can heat any hot water cylinder directly from the sun’s energy, reducing your reliance on traditional power.

Does the system work during power outages?

Yes, during grid power outages our system will continue to use all the electricity available from the Solar Panels.

How much money can I save with OneEnergy.nz?

You could save up to 100% on water heating costs, depending on usage, and for average households this could as much as 50% of your home's annual usage .

How does the OneEnergy.nz system compare to traditional solar water heating ?

Our system uses any existing hot water cylinder and the electricity from solar PV (photovoltaic) panels, whereas traditional systems use plumbed water circulation. Our approach is more cost-effective, simpler to install, more efficient, and maintenance free.

How long will the OneEnergy.nz solar water heating system last ?

Our system uses premium Solar Panels that are supplied with a 25-year manufacturers warranty. Our Sol•Flare controller has a design life of more than 15 years and is supplied with a 5 year product warranty.

How many solar panels will be supplied ?

We will supply and install 6 premium solar panels rated by manufacturers to produce 2.7kW peak, covering about 12 square meters of sunny roof space.

What happens if I need to replace my hot water cylinder?

Our system is compatible with all electric hot water cylinders, so if you replace your hot water cylinder our system will continue to work without interruption - however you should notify us of the change beforehand. With our industry partnerships we can also provide you with a great price to replace your hot water cylinder - please Get In Touch.

Can I take my OneEnergy.nz system if I move?

Yes, you can relocate your system, though it may be more practical to leave it behind and install a new system at your new home .