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What does solar cost?
Solar has never been better value. Power prices have only gone one way.
The exact price depends on your roof, your household and how you use power - but your monthly power bill is the best place to start. Find the bill closest to yours below for a ballpark, then your local Harrisons Solar business owner can give you an exact price on the spot at your free assessment.
What type of power user are you?
Grab your latest power bill and find the range closest to yours.
Low
Average power bill of $150-$250 per month
+ Retired/at home
+ Starter & expand later
Average
Average power bill of $250-$400 per month
+ Small family
+ Major appliances
+ Able to divert power usage to daytime
High
Average power bill of $400-$500 per month
+ Large Family
+ Multiple appliances
Very High
Average power bill of $500+ per month
+ Large Family
+ Multiple appliances and EV/spa/pool/central AC
+ Larger home/lifestyle block
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Example of how much you can save
This example below is for Average with a monthly power bill of $271
*Lifetime bill savings does not include an allowance for inverter replacement
The example below is for a typical family home with an average monthly power bill of $271.
The figures are based on a 5kW Harrisons Solar System with 10 premium AIKO solar panels with a top-quality Fronius inverter.
The estimated savings for this family are $42,600 over 25 years assuming power price increases of 3.5% per year in line with the average over the last 20 years.
This example was generated using OpenSolar software and is provided as a guide only. Actual results will vary depending on the property, electricity usage, installation requirements, electricity tariff and household energy-use patterns.
The system modelling assumes panels installed at a 25-degree pitch and facing a 0-degree azimuth, which is north in New Zealand. The installation is assumed to be on a single-level property and does not include scaffolding or additional harness costs required for health and safety purposes.
Electricity pricing is based on MBIE average figures for New Zealand low-user and standard-user plans as at 15 February 2026. The modelling uses a daily charge of $2.07 per day including GST and a variable electricity charge of 31.2 cents per kWh including GST.
An export rate of 12 cents per kWh excluding GST has been used for electricity exported to the grid. Export rates are assumed to remain unchanged for the 25-year modelling period, with no inflation applied.
The household is assumed to consume approximately 8,000 kWh of electricity per year, equivalent to approximately 22 kWh per day. Solar self-consumption varies depending on the system and household energy-use patterns, but is estimated at approximately 44% to 45%. The remaining solar generation is assumed to be exported to the grid.
Projected energy costs assume electricity prices increase by 3.5% per year. The estimate considers current electricity costs, expected export credits, household electricity usage, and the position and orientation of the solar panels.
The return-on-investment calculation assumes that the Fronius inverter will be replaced once in year 15 of the system’s life. The replacement cost is assumed to be 50% of the inverter’s current replacement cost.
System performance assumptions include total system losses of 13.3%, inverter losses of 2.8%, optimiser losses of 0%, shading losses of 0%, and a performance adjustment of 0%. Output calculations use System Advisor Model 2020.02.29.r2. Panel orientation assumes 10 panels at an azimuth of 0 degrees and a slope of 25 degrees.
Electricity tariffs, export rates, daily charges, equipment prices and household electricity usage may change over time. You should contact your electricity retailer for current tariff information.
Estimates do not include replacement costs for other equipment that is not covered by warranty. Components may require maintenance or replacement after their warranty period. The system price excludes the installation of a retailer smart meter.
Please refer to the OpenSolar proposal disclaimer for additional information.
What affects the cost of your solar system?
How much power you use daily
If your household has a high energy consumption (big house, pool, spa etc) you will need a larger system with more solar panels to meet your needs. Conversely, if your energy usage is lower, a smaller system will be enough.
Panels & components you choose
The quality and performance of solar panels, inverters and home batteries play a significant role in determining the overall cost of a solar system. Invest in higher quality panels with superior efficiency rates, known brand name and a credible warranty - they can generate more electricity over their lifetime and provide a greater return on investment + piece of mind with NZ supported warranties.
Ease of Installation
Different roof types or site requirements may impact the cost of a solar system, this could be things like extra wiring, scaffolding, ground-mounted panels, specialized mounting structures or if you have a roof with limited space or unusual angles, but don't worry, we've seen it all before and your local Harrisons Solar business owner can help.
Make a real dent in your power bill
Install a Solar System, and never pay an expensive electricity bill again.
Reduce your power bills
Electricity costs are a large portion of your monthly expenses, especially in winter. With a Harrisons Solar System, you’ll generate free power for your system’s entire 25+ year lifespan.
Avoid rising energy costs
Every year, electricity prices continue to increase throughout the country. Invest in solar today, and lock in the price you pay now to avoid rises in power bills.
Increase the value of your home
Solar increases the value of your home.
Sell unused power back to the grid
Get paid up to 27c per unit for your extra solar generation! Install your solar with Harrisons and switch your power to Mercury on a 24 month term. T&Cs apply.
How we've helped our customers
Hear from customers on how solar has made a real dent in their power bill.
Book your free quote
Your local Harrisons Solar business owner will come and do a free on-site assessment, and give you a proposal on the spot.
Why Harrisons Solar
Local business owners across NZ
10-year workmanship guarantee
Trusted brands, backed by our Best Price Promise
Call us today
Email us for a faster response
Frequently asked questions
All your solar questions answered
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.
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.
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.
We only use the best brands
Panels, inverters and batteries backed by manufacturer warranties of up to 30 years.
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Book your free quote
Book a free, no-obligation on-site assessment at a time that suits you. We'll size up your roof, talk you through your options without the jargon, and give you a proposal on the spot.
