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Residential Solar System

7KW 3 Phase Residential Solar System Project in Whangarei

An upgrade of our standard 7kW home package for a three-phase home, with concrete tile roof installation and travel outside Auckland.

7KW three phase residential solar system installed in Whangarei
On Site

Installation gallery

Project Details

About this installation

This homeowner in Whangarei was looking for a 7kW three-phase system. The advantages of a three-phase inverter are clear: more stable load distribution, better handling of high-power appliances, higher efficiency in power generation and more flexibility for future system expansion.

The project is upgraded from our 7kW standard home solar package priced at $10,899, with additional upgrades for three-phase power, concrete tile roof installation and extra travel costs for locations outside Auckland.

The array uses 14 x 500W panels. High-efficiency panels, a premium inverter and a fully customised design were specified for long-term performance.

Monthly cost savingsTBS
DateNov, 2025
Project typeResidential
LocationWhangarei
System size7KW
Solar panels14 x 500W
Energy storageNo battery
Roof typeConcrete tile
The Numbers

Estimated payback and bill saving

Estimates prepared for this property before installation. We prepare the same modelling for every quote so you can see the payback before you commit.

Why Choose Solar Republic

Backed for the long run

Expertise and customised solutions, high-quality components and technology, and a commitment to sustainability and customer satisfaction.

25 Years PV panel warranty
10 Years Inverter warranty
5 Years Workmanship warranty
We Estimate Payback And Saving For You

Request a free quote for your own roof

All-in-one home solar packages

Our standard home packages cover an approx. 5kW system at $8,999, an approx. 7kW system at $10,899 and an approx. 10kW system at $14,999, all including GST and full installation.

Projects like this one are usually an upgrade on a standard package, with extras such as three-phase power, a concrete tile roof or travel outside Auckland priced separately.