Solax Three Phase 15kW Battery-Ready Solar System

$15,999.00
/
Tax included.

This solution is ideal for large households with high electricity demands and multiple high-power appliances. It easily supports electric vehicle charging, central air conditioning, underfloor heating, water heaters, and more. With smart power management, the 15kW system ensures efficient energy use while significantly reducing electricity costs.

In Auckland, the system generates approximately 1,459 kWh per month in winter and up to 2,713 kWh in summer. By optimizing appliance usage, you can maximize daytime solar energy generation, minimize nighttime grid reliance, and lower energy costs while embracing an eco-friendly solution.

The system’s inverter includes unbalanced overload functionality and a battery-ready design, making it an excellent fit for New Zealand. It intelligently redistributes power between phases to maximize solar self-consumption, reduce energy waste, and minimize grid dependence. The battery interface allows easy future upgrades without replacing major components, combining low initial costs with long-term flexibility.

Explanation: The price includes GST but excludes shipping. Shipping will be calculated at checkout based on your delivery address.

You can use your own installation company — we’ll still provide technical support and after-sales service. Or choose from our recommended installation companies. 👉 How TEG ensures long-term benefits?

Use the Solar Savings Calculator below to estimate your installation cost based on system size and roof conditions. The estimate is usually accurate but excludes Special Cases like scaffolding or wall penetrations. Final price will be confirmed after onsite assessment.

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In the bundle plan

Solar Panel Icon

34x Longi Hi-MO X6 Scientist 440W All Black Solar Panels

Warranty Terms & Conditions
Datasheet
Clamping Zone
Installation Manual

Accessories Icon

3x ZJBENY 1000V/32A DC isolator
1x ZJBENY 250V/35A AC isolator
1x Grid Connect Label Kit
1x Battery Label Kit

Inverter Icon

(Option): Solax 22kW Three Phase Smart EV Charger

Warranty Terms & Conditions
Datasheet
User Manual
Quick Installation Guide

Mounting Kits Icon

(Option): Adapt Box G2 | Energy Management | Heat Pump

Warranty Terms & Conditions
Datasheet
User Manual
Quick Installation Guide

We make solar savings simple and transparent
Unlock the true potential of solar energy with our Solar Savings Calculator. Explore personalized estimates of your cumulative savings, costs, and payback period, tailored to your location, energy habits, and electricity rates. Leverage data-driven insights to make confident, informed decisions, and take the first step toward a smarter, more sustainable energy future today.
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Disclaimer: The Energy Group disclaims all liability for any claim, loss, demand, or damages of any kind (including negligence) arising from or in connection with the use of this website, including the tools, information, content, or materials provided, as well as any websites linked to this site.
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Estimated Payback Period
Years
Months
Estimated Net Lifetime Savings / After Maintenance
Dollars

Explanation: The payback period calculation is based on the data provided by the user, and the algorithm takes into account information such as electricity rates for different time periods, daily charges, buy-back rates, etc. The power degradation of the solar panels in the first year shall not exceed 1.5%. From the second to the 25th year, the annual power degradation shall not exceed 0.4%, and the extra linear power output over the 25-year period shall be no less than 88.9%.

Estimated Energy from Grid
Dollars
Estimated After Solar
Dollars

Explanation: The calculation of cumulative savings and energy cost comparison is based on the data provided by the user. The algorithm considers electricity rates for different time periods, daily charges, buy-back rates, as well as an annual increase of 3.16% in electricity rates and daily charges.

Product and Service Scope Overview

In the Bundle Plan
Description Total
1 x kW
2 x kW
3 x kWh
4 1x Complete Set of Electrical Accessories 1 SET
5 1x Complete Set of Mounting Kit 1 SET
Installation & Service Lists
Item Description
1 Price & Installation Guarantee
2 Site Assessment and System Evaluation
3 Obtaining Necessary Permits and Approvals
4 Full Installation
5 5-year Workshop Warranty & 25-year After Service
NZ Dollars

Installation Guidelines

Whether you choose to use your own installer or one of our recommended installers, the Installation Guidelines outline the basic responsibilities of the installer when installing a solar system for you. This information will help you determine whether your chosen installer is qualified to handle the job. If you find that your installer is unclear in their feedback, we recommend reconsidering your choice. For a more convenient and hassle-free experience, we suggest selecting one of our recommended installers. They are familiar with these requirements and can work seamlessly with you to ensure the project is completed successfully.

Installation Guidelines Why Our Installer