3kW Solar System

A 3kW Solar System is a compact and inexpensive solution for a small-sized households or retirees looking to slash their power bill.

Does 3kW Solar System suit my home?

If you’re a small household of up to two people and worry about rising power bills, or looking for a starter option to expand later, a 3kW Solar System might be the perfect option. It’s a reliable and cost-effective entry level Solar System.

What's in a typical 3kW Solar System?

8 Solar panels
3kW european Fronius inverter
From $9,200 fully installed
+ add energy saving accessories and electric car chargers

How much does a 3kW Solar System cost?

A quality 3kW Solar System installed on your rooftop will start from $9,200 depending on various circumstances and will start slashing your power bill immediately. Harrisons Solar is dedicated to making sustainable homes easy and affordable and we've got hot finance deals on all our solar systems right now.

How much power does a 3kW Solar System produce?

On average, your 3kW solar system can generate approximately $1,330 in power bill savings every year of power based on $.30c per kw for at least 25+ years. The actual amount will vary from day to day, depending on factors such as the average sunlight in your area, weather conditions, and the placement of your solar panels.

Typical financial return for a 3kW Solar System

Over their 25-year lifespan, 3kW Solar Systems can generate approximately $33,288 of power based on $.30c per kw. On a yearly basis, a 3kW Solar System can slash your power bill by up to $1,330. This makes a payback period for average 3kW Solar Power System 7-9 years.

Example of how much you can save with a 3kW Solar System

This example below uses a typical family home that has a $190 power bill in a month. They have installed a 3.2kW Harrisons Solar Power System that has 8 premium  long-lasting and high power solar panels with a top-quality Fronius inverter. Their power bill has been slashed monthly - even more, as retail power prices continue to rise, they are saving $46,588 over the 25+ year performance life of the system.

Example net financial impact

This quality Harrisons Solar Power system will pay for itself after 6.5 years. Meaning from 6.5 years onwards you are getting free power for the rest of the life of the system.

Save the planet, as well as your wallet

Here is an example environmental footprint of that 3.2kW Harrisons Solar Power System.

This is an example only generated from "OpenSolar" software using a low energy user, not to be relied upon as individual circumstances vary.

Your projected energy cost is calculated by considering a 3.0% increase in energy cost each year, due to trends in the raising cost of energy. This estimate is based on your selected preferences, current energy costs and the position and orientation of your roof to calculate the efficiency of the system. Projections are based on estimated usage of 7920 kWh per year, assuming AKL - Contact Energy Standard User Electricity Tariff. Your electricity tariff rates may change as a result of installing the system. You should contact your electricity retailer for further information.

System Performance Assumptions: System Total losses: 13.9%, Inverter losses: 3.2%, Optimizer losses: 0%, Shading losses: 0%, Performance Adjustment: 0%, Output Calculator: System Advisor Model 2020.02.29.r2. Panel Orientations: 8 panels with Azimuth 7 and Slope 20.Estimates do not include replacement costs of equipment not covered by a warranty. Components may need replacement after their warranty period. Financial discount rate assumed: 6.75%Price excludes Retailer Smart Meter should you want us to install your Smart Meter it will be an additional cost.
Please visit www.opensolar.com/proposal-disclaimer for additional disclosures from OpenSolar.

Estimated solar generation is calculated by multiplying the number of estimated panels, the wattage of each panel, and the average number of sunshine hours per day. This calculation is based on a $0.30 per kWh electricity rate and is projected over a period of one year and twenty five years.

How long will a 3kW Solar System last?

Harrisons works only with the best brands like AIKO, German engineered Solar Panels, and Fronius, Austrian made inverters - both with locally held warranties. AIKO Solars come with up to 25 years Product warranty and 30 Years Performance warranty.

System Power
System size
typical 3kw solar system
8 Solar Panels
3kw Fronius GEN24 Inverter
Full Installation
From $9,200
370kWh per Month
ave increase in home value
4.4% or $35,000

How we have helped our customers

Hear from some of our customers on how solar has slashed their power bill.

WONDERFUL made easy

Our Process

At Harrisons Solar we keep it easy as 1-2-3. Our expert team knows how to make your transition to Solar smooth and seamless.


Free In-Home Consultation


Free Expert




Free In-Home Consultation


Free Expert




Frequently Asked

All your Solar questions answered

Will Solar work in NZ?

Absolutely! New Zealand has abundant sunshine and generates between 1,700 and 2,100 sunshine hours annually. Some areas, like Nelson and Gisborne, receive as much as 2,400. Solar Panels don’t require sunshine; they require daylight, so Solar Panels work year-round, even in the lower South Island.

How many Panels do I need?

The average energy consumption is essential in determining the number of Solar Panels you need. A retired couple will have a different power consumption than a young family, plus pools, spas, and electric cars can also impact energy requirements.

The amount of energy Solar Panels can generate depends on sun hours and is therefore affected by your location.

Your roof size is crucial because it determines the number of Panels that can fit on your roof, how much energy will be generated, and the cost.

Check out the most popular Harrisons Residential Solar Systems.

Is Solar right for me?

There are several factors to consider when installing a Solar System in your home. In most scenarios, the benefits of solar power outweigh the drawbacks.


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Book a Free Quote Today!

Book a FREE on-site measure and quote at a time that suits you, and we can also give you a proposal on the spot.

Harrisons  on-site measure to a customer

Book a Free Quote Today!

Book a FREE on-site measure and quote at a time that suits you, and we can also give you a proposal on the spot.