Solar Systems

An off-grid solar system gives you everything you need to be completely autonomous from the main power grid.

An off-grid solar system is a stand-alone power system. The self-contained unit generates and stores electricity from the sun. These systems feature a number of highly effective photovoltaic solar panels and some batteries. The solar panels collect energy from the sun and the batteries store the energy.

During a period of high demand or low power production (e.g. night), the appliances draw energy from batteries instead. An inverter converts the energy stored into usable electricity.

Unlike traditional grid-tied solar systems, off-grid solar systems are not connected to the power grid. They produce clean, green, free power.

modern kitchen lights

Keep your lights on.

Power outages are becoming increasingly common due to factors such as rolling blackouts, lightning storms, and increased time spent at home. With our help, you can ensure your home is the one on the block with the lights shining bright.

family independance

Electricity costs are on the rise and utilities often charge more during peak times. But there’s a better way. By generating clean energy and storing excess power for peak times and outages, you can break free from power company grid games and enjoy energy independence.

home control

Control your own home.

An off-grid solar system by AJ’s Electrical allows you to be autonomous from the grid and you can customise your power preference, and monitor system operation and savings with our intuitive software, giving you control.

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solar grid system wall
At AJ’s Electrical, we design bespoke off-grid solar solutions. We take the components from the world’s leading solar power equipment providers, and our expert solar electricians design and build an off-grid system to meet your needs. AJ’s Electrical off-grid systems include solar panels and high-performance Victron inverters. These are paired with Freedom Won solar batteries and a selection of generators. Here is a brief outline of how each component works.
    • Solar panels: collect energy from the sun and convert it into DC electricity
    • Battery bank: stores the DC electricity generated by solar panels
    • Charge controller: regulates the energy that goes into the battery banks to prevent overcharging
    • Inverter: Converts DC electricity from the battery bank into AC electricity that is used to power a home
    • Generator: provides power when the battery bank runs low or when there isn’t enough sunlight to generate energy

How does an off-grid system work? 

Are you tired of relying on an electricity company for your energy needs? It may be time to break free with an off-grid solar system.

Anything that can be powered by grid energy can be powered by solar energy. These innovative systems operate by generating electricity through solar panels. Once installed, they instantly start generating electricity from panels on the roof, storing it in solar batteries. This power can then be used to provide energy to any appliances; lighting, fridges, televisions and more.

You can say goodbye to power bills forever. Off-grid solar power systems are designed to meet all your energy needs without relying on a power company.

independence couple

Have a question or need a quote?

What we do.

The team at AJ’s Electrical has you covered when it comes to designing off-grid solar systems from scratch. We determine your energy needs, solar battery system sizing and additional components you will need.

After designing your bespoke solar system, we choose and assemble the hardware to build your appliance. The components we select are sourced from some of the world’s leading solar system suppliers: Victron and Freedom Won.

Finally, one of our expert solar electricians will come out to your property and install your off-grid solar system. We ensure all components of the system are correctly and safely installed. Once your solar system is installed, it will start generating electricity.

Our brands.

sunpower product

(Solar Panels)

SunPower solar panels are the highest-efficiency panels on the market. The US-based company has over 35 years of dedicated solar experience, making them one of the pioneering companies in the industry. SunPower offers the strongest warranties in the solar industry, so you can rest assured you’ll have peace of mind for decades to come.

    • Industry-leading warranties
    • Over 35 years of solar experience
    • 33 million panels deployed worldwide
victron product

(Solar Inverters)

Victron Energy is a Netherlands-based company that has been manufacturing power conversion equipment since 1975. It is renowned for producing world-leading off-grid battery inverters. With over 45 years of experience, Victron Energy’s off-grid energy systems stand the test of time and the environment.

  • Market-leading off-grid solar inverter systems
  • 45-years’ experience
  • VictronConnect app to connect products via Bluetooth, USB and Wi-Fi/Internet
freedom won product

(Solar Batteries)

Freedom Won solar batteries are the perfect high-quality battery for all your residential off-grid solar systems. Established in 2004, Freedom Won is the largest energy storage manufacturer in Africa and is the market leader for product innovation, performance and reliability. Freedom Won was the first organisation to introduce lithium storage technology to the market in 2010.

  • Industry leaders in Lithium Iron Phosphate energy storage systems
  • 10-year warranty
  • Extensive size/capacity options

Hear from our valued customers.

Conor Neilson
Conor Neilson
19. June, 2024.
Great company. Fast, professional, friendly. Would use them for any needed electrical work.
Rob and Heidi
Rob and Heidi
17. May, 2024.
Very happy with the job. Tradesman visited and fixed everything I had booked in and then even took time to do the little extra jobs I remembered while he was there that I hadn't booked in. Was very reliable, efficient and friendly.
Marie Thompson
Marie Thompson
29. April, 2024.
Turned up on time. Quickly ascertained issue (hot water cylinder not working), fixed switch. Happily answered my questions about various things with an older house. He recommended replacing a few light switches and explained why. I wd recommend AJs.
Cherry McGovern
Cherry McGovern
20. February, 2024.
We recently had AJ's Electrical install a solar system at our property. From the initial contact, through to installation and after service, the company and its people have been fantastic. The job was completed quickly and to a brilliant standard, with respectful, tidy and knowledgeable specialists doing the quoting, install, and after service. We have had two queries since the install, both of which have been answered immediately. I can not speak more highly of this outfit, they deserve your business. Cheers, Mike
gaynor hill
gaynor hill
9. February, 2024.
Warren who sold us our solar system, and air con unit. Fantastic knowledge, friendly, wasn't full of sales patter, sound advice, and support. Thankyou. Violet who works in the offices is super efficient, and answers all queries at lightening speed! Thankyou Now to the team. These guys are worth their weight in gold! Josh, Jake, Wayne & Dublin. Absolutely on the money... A* through and through. Prompt, respectful, efficient, knowledgeable, take pride in their work, and super friendly. Extremely tidy! No damage, no scuffs, no marks... Incredible job, especially whilst working in such hot and humid conditions. These are the type of tradies (electricians) that are few and far between, and when you get a service like what we received, you'd be hard pressed to find others of this calibre. Hence we will stay with them! A million thankyous... You're the best! Gaynor and Chris
Julie Cole
Julie Cole
29. November, 2023.
What a top bunch of guys!! Efficient, professional and so thorough. I highly recommend Aj's Electrical. Top job. Thank You!
Adam Worsnop
Adam Worsnop
10. November, 2023.
AJs have completed a full rewire and refit on my showroom and workshop in tauranga. Extremely happy with the way they communicate and execute the job. The place has come out way better than expected. Would recommend to anyone wanting a professional job done.
Helen Crampton
Helen Crampton
26. September, 2023.
Outstanding service from AJ's Electrical - friendly " we can sort that for you at a convenient time" advice over the phone, and very prompt professional service provided at an extremely reasonable price. Highly recommended . Thank you, AJ's Electrical.
Dallas Meeking
Dallas Meeking
12. September, 2023.
Great service from beginning to end, we would fully recommend AJs for solar system install. After service and support great too, all questions answered quickly and ongoing advice is no issue.
Semiha Sengezer
Semiha Sengezer
31. July, 2023.
Amazing fast service! & Friendly Staff Highly recommend AJ’s Electrical. 👍🏻

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Why choose AJ’s Electrical?

We are ECANZ members and Master Electricians, with comprehensive experience across all aspects of electrical design, installation and service.

We are known for exceptional service, efficient and cost-effective commercial and residential electrical project management. Our skills and capacity naturally translate to outstanding outcomes in both commercial and residential new builds and renovations.

All of our work is backed by a $20,000 workmanship guarantee because we are members of the Master Electricians Contractors Association of NZ & Sustainable Energy Association of NZ.

Whether it’s heat pumps, switchboard upgrades, commercial electrical and lighting specification, design and installation, or a full-scale solar array to offset your power costs, AJ’s Electrical are the experts to talk to in Tauranga and the wider Bay of Plenty.

Bruce Jeffries, General Manager

master electricians