Solar Panels in New Zealand: Costs, Savings & How To Get Started
Written by
Kristy Hoare, Founder & Solar Market Research Specialist
Last updated:
Thinking about installing a solar panel system? Now’s the Best Time - Prices Have Never Been Lower!
Since 2010, the cost of grid-connected systems has plunged by over 75% - making clean energy accessible to more Kiwis every year.
Key Takeaways: Solar Costs in New Zealand (2026)
- Average Cost: A fully installed residential solar system in NZ ranges from $7,000 (3 kW) to $19,000 (10 kW) inc. GST & installation.
- Most Popular Size: The 6kW system costs $12,000 fully installed and covers the average Kiwi household's energy needs.
- Cost Per Watt Benchmark: Quality Tier 1 solar systems in NZ average $2.04 per watt installed.
- Payback Period: Expect a return on investment (ROI) within 6 to 8 years, with 20+ years of free electricity thereafter.
- Average Battery Cost: The 13.5 kWh battery is the most common installation size, with an average total cost of $13,000 inc. GST & installation.
How Much Does a Solar Panel System Cost in 2026?
In 2008, a 3kW system would set you back $40,000.
Today? You’ll pay around $7,000 fully installed.
Get The Best Price For Solar
Use our free 3 Solar Quotes Service to compare competitive prices from top-rated installers.
What Is The Cost Of A Solar Panel System In New Zealand?
The cost of a solar panel system largely depends on the size of the system and the type of roof it’s installed on. Here’s a snapshot of typical residential solar system sizes in New Zealand and their approximate pricing. Lasted updated: 28/04/2026.
6 kW
Twelve 500W solar panels
$12,000
Average homes, heat pump heating, and standard appliances (battery optional)
7 kW
Fourteen 500W solar panels
$14,000
Larger homes, high daytime consumption or including battery storage
8 kW
Sixteen 500W solar panels
$16,000
Large homes, larger appliances, EV charging + battery storage
9 kW
Eighteen 500W solar panels
$17,500
Large homes, larger appliances, EV charging + battery storage
10 kW
Twenty 500W solar panels
$19,000
Large homes, pools/spas, and EV charging + battery storage
12 kW
Twenty four 500W solar panels
$22,000
Large homes, pools/spas, and EV charging + battery storage
15 kW
Thirty 500W solar panels
$26,000
Large homes, pools/spas, and EV charging + battery storage
*Please only use these prices on this page as a guide. The solar power system prices assume straightforward installation on a metal roof. Prices can vary based on a number of factors as listed below.
How We Calculate New Zealand Solar Pricing (Data & Methodology)
Unlike estimated guides, My Solar Quotes publishes real pricing data directly from Kiwi homeowners and installers.
Primary Survey Data: Our 2026 benchmarks are built from 151 verified residential solar installs and 63 battery installations across New Zealand who all had a system installed by a SEANZ member.
Statistical Rigor: The NZ average install price sits at $2.04/watt, with a 25th to 75th percentile range of $1.74/W to $2.36/W depending on roof complexity, microinverters, and premium panel brands (e.g., SunPower , REC).
Data Author: Data compiled and analyzed by Kristy Hoare, Founder and Solar Energy Consultant at My Solar Quotes.
Want the full statistical breakdown? Read our complete analysis: The $2 Per Watt Reality: What Kiwis Are Paying for Solar
Get Solar Panels The Easy Way, Get 3 Free Solar Quotes Now
Factors Affecting Solar System Prices
- Roof Type: Metal/tin roofs are more cost-effective to install solar panels on, while tile or shingle roofs may incur extra costs.
- Switchboard Upgrades: Older or non-compliant switchboards may need to be replaced.
- Scaffolding: Required for homes with multiple stories.
- Travel Costs: Installations in rural or remote areas may incur additional charges.
- Lines Company Fees: Some companies charge a small fee ($100-$200) for connecting your system to the grid.
Don't Forget: Lines Company Application Fees
When your solar system connects to the grid, your local lines company may charge an application fee to approve the connection.
Around 9 of NZ’s 30+ lines companies charge no application fee for standard residential solar systems, including Aurora Energy, Powerco, Vector and MainPower. Where fees do apply, they are typically around $80–$350, with the average sitting at roughly $140. Extra inspection fees can sometimes apply, but these are less common.
Most solar installers take care of the application for you, but it’s worth checking whether the fee is included in your quote.
Check your local lines company’s fees and export limits>
Shop Around For A Solar Panel System
Not all solar deals are created equal.
Prices, equipment quality, warranties, and installer experience can vary wildly between providers. That’s why getting multiple quotes isn’t just smart - it’s essential.
Here’s why shopping around pays off:
- Better Pricing: Some quotes can be thousands of dollars apart for similar systems.
- Higher Quality Gear: Different installers offer different brands - and not all panels, inverters and batteries are equal.
- Stronger Warranties: Look for installers offering solid performance and workmanship guarantees.
- Tailored Solutions: One installer might recommend a system that better suits your roof aesthetics, energy use, or future battery plans.
- Best Service: Talking to a few installers lets you quickly spot who’s responsive, knowledgeable, and easy to work with - so you end up with a team you enjoy engaging with.
Tip: Get 3 quotes through My Solar Quotes and easily shop around trusted local installers - saving time, money, and locking in the best deal for your home.
How Many Solar Panels Do You Need?
Figuring out how many solar panels you need for your home in New Zealand doesn’t have to be a head-scratcher. It all comes down to your household’s energy habits, roof space, and how much sunshine your area gets.
Most Kiwi homes opt for systems between 4kW and 8kW, which translates to around 8 to 16 solar panels. The sweet spot for many is a 6kW system (roughly 12 panels), as it covers a hefty chunk of the average home’s energy needs at a more affordable price tag.
But how do you decide what’s right for you? Let’s break it down with three simple approaches:
- Max Your Budget: If you’re aiming to squeeze in as much solar as you can afford, start by getting 3 quotes. Let the installers know your budget, and they’ll recommend the best setup within your price range.
- Best Return On Investment: Use our handy solar calculator to tweak system sizes and see which one delivers the best return on investment. Or, skip straight to getting quotes and let the experts do the math.
- Go Big on Roof Space: Want to go all out? Install as many panels as your roof can handle. When you request free 3 quotes, solar installers can use satellite imaging and clever software to map out your roof and figure out the maximum panel count for your space.
Is Solar Power Worth It?
Investing in solar panels can generate a return of 12 to 18% annually, which increases as electricity prices climb.
Moving house? No problem! A major New Zealand study confirms that solar panels increase home values. So you'll recoup your investment at sale, while pocketing the power bill savings in the meantime.
Unsure if solar panels on your roof will be worthwhile or if the upfront cost will lead to a good payback? Use our solar calculator to see how much you could save and estimate your payback period.
Buyers Guide for Solar Power in New Zealand
My Solar Quotes Buyers Guide for home solar panel installations takes you through the steps of purchasing a solar power system for your home, and the factors you will need to consider at each step.
The guide includes ‘how to avoid dodgy traders’ and ‘details to look out for when comparing quotes’. View the solar power buyers guide here.
How Much Does a Solar Panel Cost?
A single 500W solar panel in New Zealand costs around $230. But panels are just one part of the puzzle - you’ll also need an inverter, mounting gear, and professional installation to turn those panels into a fully functioning solar power system.
Find out how to choose solar panels here>
Should I Wait For The Price Of Solar To Fall?
Short answer: No
The price of a solar power system has plummeted dramatically over the last decade, so we don't expect similarly drastic price drops in the future. Expect to see a 3 kW solar power system drop no more than a few hundred dollars every year, or even increase slightly.
In a few years a new solar power system's cost could fall, but the savings made on power bills (with a solar power system installed today) would mean greater savings in the long term.
There hasn't been a revolutionary change in solar power technology over the last 10 years - the energy collection concepts remain the same, but the technology gets incrementally more efficient yearly.
The term 'efficiency' in the solar world means the efficiency at which the panel converts sunlight into power. At present, the average efficiency of a quality panel is 24%. According to GTM research, conventional panels are likely to improve by approximately 0.3% annually, which isn't fast by any means.
Solar Battery Prices
Batteries can be used to store solar power for use at night, during times of peak electricity demand and during blackouts. Learn more about solar batteries here.
Prices for a battery storage system accompanying a grid-connected solar power system will largely depend on the battery’s storage capacity, followed by the brand's reputation, quality and special features.
Generally, the more storage capacity is installed, the more expensive it is. Find out if solar batteries are worth the cost or see the approximate prices for lithium-ion solar batteries.
| Solar Battery Capacity | Approximate Price Range |
| 5 kWh | $6,000 to $7,500 |
| 10 kWh | $10,000 to $13,000 |
| 15 kWh | $14,000 to $18,000 |
Note: All prices include GST
Compare Solar Battery Types And Prices>
Get 3 Free Quotes For Solar Panels And Batteries>
The Upfront Cost: Financing Your Solar System
At around $12,000 for a typical 6kW solar system, the upfront cost can be a hurdle. The good news is you may not need to pay for it all at once.
Several major NZ banks offer low-interest green loans for solar panels, batteries and other home energy upgrades. In many cases, these are far cheaper than using a standard personal loan or credit card.
Depending on your bank, you may be able to access:
- 0–1% interest
- Loan terms of up to 5 years
- Borrowing of up to $80,000
- Finance for both solar and battery systems
You’ll generally need a solar quote before applying for a loan from these banks, so it’s worth checking what your own bank offers.
Compare NZ solar finance options>
Why You Don't Need a "6.6 kW" System in New Zealand
If you've been reading online guides, you may have seen "6.6 kW" mentioned as the "most popular" solar system size. In New Zealand, this is a myth carried over from Australian market rules.
- The Australian Rule: Australia has a federal solar rebate (STC scheme) that caps single-phase 5 kW inverters at 6.6 kW of panels to qualify for maximum subsidies.
- The NZ Reality: New Zealand has no government rebates and no 6.6 kW restriction. Kiwi homeowners build systems based on actual roof space and household consumption.
- What Government Data Shows: According to the Energy Authority (EMI), the average residential system installed across New Zealand is 5.7 kW.
- What Our Installers See: Our survey of 151 verified installations shows customers are increasingly installing larger systems, with an average of 7.89 kW — reflecting growing demand for energy independence and battery compatibility.
The Bottom Line: Size your system based on your roof space, consumption, and future battery plans - not arbitrary Australian thresholds. That's why our installers work with your home, not one-size-fits-all rules.
Ready To Get Solar Panels On Your Roof?
Ready to take the next step? Use our free quote service to find the best deal on solar power and start saving on your electricity bills.
FREQUENTLY ASKED QUESTIONS
About 9 of NZ's 30+ lines companies charge no application fee for residential systems under 10kW - including Aurora Energy, Powerco, Vector, and MainPower. If your area charges fees, expect $80–$350. These should be factored into your budget but are often handled by installers and often included in their quotes.
About 9 of NZ's 30+ lines companies charge no application fee for residential systems under 10kW - including Aurora Energy, Powerco, Vector, and MainPower. If your area charges fees, expect $80–$350. These should be factored into your budget but are often handled by installers and often included in their quotes.
Nearly. Adding a residential battery costs approximately $13,024 on average (based on our survey of 63 battery installations). Battery pricing averages $1,219 per kWh installed, so a typical 11.1 kWh system costs around $13,500, and a larger 13.5 kWh system costs roughly $16,500.
The rough math: A typical 6kW solar system costs roughly $12,000, and a battery adds another $13,000... so yes, adding a battery roughly doubles your total system cost.
While batteries significantly extend your payback period, they deliver blackout protection, backup power during outages, and energy independence, benefits many Kiwi households value beyond just financial returns. However, this varies by region, system size, and battery capacity, so request quotes to understand the exact cost for your situation.
NZ power retailers pay between 8c and 17c per kWh for excess solar power exported to the grid. While buy-back credits reduce your bill, maximum ROI is achieved through self-consumption using your solar energy during the day to offset retail electricity rates, which averages at 39c/kWh.
Major NZ banks offer dedicated solar green loans at competitive rates:
- Westpac Warm Up Loan: 0% interest, up to $50,000, 5-year term
- ANZ Good Energy Loan: 1% interest, up to $80,000, 3-year term
- ASB Better Homes Top-Up: 1% interest, up to $80,000, 3-year term
- BNZ Green Home Loan: 1% interest, up to $80,000, 3-year term
- Kiwibank Sustainable Energy Loan: Variable rate, 7–10 year term, plus $2,000 contribution towards system cost
All banks require (1) installation by a SEANZ-certified member, (2) a formal itemised quote, and (3) proof you can service the debt. From our knowledge, most of these applications are treated like home renovation loans, expect standard lending criteria and a credit check. Most approvals happen within days if you qualify.
No, for most standard homes. Under updated MBIE exemption guidance (effective late 2025/2026), standard residential roof-mounted solar systems no longer require building consent provided the weight load complies with standard building code thresholds.
The average payback period for a residential solar system in NZ is 6 to 8 years (without a battery), yielding an annual return on investment (ROI) of 12% to 18%. Because solar panels carry 25 to 30 year performance warranties, you can expect 17+ years of free electricity after the initial system cost is paid off.
Quality Tier 1 solar systems in New Zealand average $1.74 – $2.36 per watt installed. If a quote significantly exceeds this, ask why (premium brand, complex installation, battery add-on, etc.). If it's much lower, verify the installer is SEANZ-certified and includes proper warranties. Also big box retailers advertise much cheaper systems, but often doesn't include installation costs and workmanship waranties.
