Typical solar panel costs in New Zealand in 2026
EECA's numbers are the best public benchmark because they include standard installation and GST and keep batteries separate. Treat them as the price of a straightforward job on an easy roof.
| Example system | System size | Panels | Typical cost | Notes |
|---|---|---|---|---|
| Small home solar system | 3 kW | 7 panels | $8,500 | Includes standard install and GST |
| Medium home solar system | 5 kW | 12 panels | $11,500 | Common comparison point for average homes |
| Large home solar system | 10 kW | 24 panels | $20,000 | May need closer network/export checks |
Source: EECA. These are national comparison figures, not quoted Canterbury prices.
$8,500 divided by 3,000 watts
$11,500 divided by 5,000 watts
$20,000 divided by 10,000 watts
Price per watt is the fastest way to compare quotes for different system sizes. EECA's examples work out at $2.00 to $2.83 a watt (our arithmetic). Bigger systems cost less per watt because the fixed costs, such as design, paperwork, travel and electrical sign-off, are spread over more panels.
A quote in Christchurch, Rolleston, Rangiora, Ashburton or Timaru that is well above these figures is not automatically a bad deal. But the installer should be able to name the reason: scaffolding on a two-storey house, a switchboard upgrade, premium panels or a difficult roof. If they can't, keep looking.
This is general information, not financial advice. The real price for your home comes from an installer's site visit.
Worked example: is this 5 kW Christchurch quote fair?
This is an example, not a real customer's quote. It shows how to check any 5 kW quote using two public numbers: EECA's $11,500 benchmark price and its $1,180 modelled yearly saving for a Christchurch home. [1]
| Quoted price (incl. GST) | Price per watt | Simple payback at $1,180 a year | What to ask |
|---|---|---|---|
| $10,000 | $2.00/W | 8.5 years | What is excluded? Check scaffolding, metering and panel models. |
| $11,500 | $2.30/W | 9.7 years | In line with EECA. Compare equipment and warranties. |
| $13,500 | $2.70/W | 11.4 years | Which extra work or equipment explains the $2,000 gap? |
| $15,000 | $3.00/W | 12.7 years | Needs a clear, itemised reason. Get another quote. |
Simple payback is the quoted price divided by $1,180. It ignores interest, future power price changes and panel ageing, so treat it as a way to compare quotes, not a forecast.
Two things move the answer more than the price does. First, how much of the solar you use yourself: a household that is home during the day, heats water on solar or charges an EV can beat $1,180 comfortably, while a house that sits empty from 8 to 6 will struggle to reach it. Second, what the quote leaves out. A cheap quote that later adds scaffolding or a switchboard upgrade is not cheap.
Why two Canterbury quotes for the same house can differ
A single-storey Christchurch home with a sound long-run metal roof is about as easy as solar gets. A steep or two-storey roof, a complex new-build roofline, a farm shed or an old switchboard all add cost. If you are unsure about your roof, read our Canterbury metal roof solar guide before comparing prices.
Things that can push the price up
- Tricky roof access or extra edge protection.
- Older roofing, corrosion, or a roof near replacement.
- Switchboard upgrades or longer cable runs.
- Battery storage, EV charging or backup circuits.
- Engineering, consent or network export constraints.
Things that can make quoting cleaner
- Good north, east or west roof space with limited shade.
- Modern long-run metal roofing in sound condition.
- Easy inverter and switchboard location.
- A recent power bill and clear usage goals.
- Knowing your ICP and local electricity network.
A solar quote is much more than the price of the panels
Ignore online panel prices. An installed system also includes the inverter, mounting, cabling, isolators, electrical labour, safe roof access, design, network paperwork, testing and certification. Some homes also need switchboard work, metering changes or engineering.
The core system
- Panels, inverter and mounting hardware.
- Electrical protection, cabling and isolators.
- Design, installation, testing and certification.
- Monitoring setup and handover documentation.
Site-specific allowances
- Scaffolding, edge protection and difficult access.
- Switchboard, meter or long cable-run work.
- Roof repairs, engineering or consent-related design.
- Network application fees and export controls.
An advertised price that leaves out installation or electrical work is not a quote. Compare complete prices only.
How many panels does a New Zealand home need?
Start with how much power you use in a year and when you use it. Then check usable roof area, shade, which way the roof faces, plans for an EV or electric hot water, and your export limit. EECA's current examples use 7 panels for 3 kW, 12 panels for 5 kW and 24 panels for 10 kW. Individual panel wattages vary, so panel count is not a sizing rule by itself. [6]
| Household pattern | What to investigate | Why |
|---|---|---|
| Lower use, someone home in daytime | Small system and hot-water timing | More generation can be used directly |
| Average all-electric home | Medium system matched to half-hourly data | Balances roof area, direct use and export |
| Large home, EV, spa or rural loads | Larger system plus network and phase checks | Future demand may justify more capacity |
| Most use after sunset | Solar-only and battery options priced separately | Timing changes the value of generation |
6.6 kW is a common package size, not a rule. EECA models several sizes and the Electricity Authority now uses a 10 kW default export limit for qualifying straightforward residential connections. Size the system from the home and network, not a package name. [5]
Solar payback in New Zealand: what the headline number misses
EECA puts typical payback at 7 to 10 years for households that use most of the power they generate. That figure leaves out interest on a loan and the interest your savings could have earned. [1]
Judge a quote on its year-one saving. A 25-year total makes any system look good.
Payback depends mostly on how much of your solar you use at home. Every unit you use yourself saves the full retail price. Every unit you export earns the buy-back rate, which is usually well below what you pay for power. So the same system pays back faster in a house where someone is home during the day. Our New Zealand solar buy-back guide explains how to compare the whole power bill. [3]
December 2025 EECA calculation for an example address in each region's largest urban centre. Actual homes differ.
Solar battery cost in New Zealand: price it separately
EECA lists a typical battery add-on cost of $5,000 to $15,000, depending on battery type and capacity. It also lists example solar-plus-battery packages of $13,500 for a 3 kW system with a 5 kWh battery, $21,500 for a 5 kW system with a 10 kWh battery, and $40,000 for a 10 kW system with a 20 kWh battery. [1]
| Solar size | Battery size | Solar-only | Package total | Implied uplift |
|---|---|---|---|---|
| 3 kW | 5 kWh | $8,500 | $13,500 | $5,000 |
| 5 kW | 10 kWh | $11,500 | $21,500 | $10,000 |
| 10 kW | 20 kWh | $20,000 | $40,000 | $20,000 |
The uplift is our subtraction of EECA's solar-only example from its matching solar-and-battery package. It is not a standalone battery quote. Backup hardware, switchboard work, usable capacity, inverter choice and installation complexity can all change the real difference.
Our view: for most Christchurch homes, a battery will not pay for itself on bill savings alone. On EECA's figures a 10 kWh battery adds about $10,000. To pay that back within a typical 10-year warranty it would need to add about $1,000 a year in savings, close to what the whole solar system saves in EECA's model. Buy a battery because you want backup power or more evening independence, and always get it priced separately. For a deeper breakdown, read the New Zealand solar battery guide.
Equipment detail
Ask for batteries, inverters and switchboard work to be itemised.
That makes it easier to compare a solar-only system against a solar-plus-battery quote, and to see whether electrical work has been allowed for properly.
Should you wait for solar prices to fall?
Waiting a year costs you a year of savings: about $1,180 on EECA's Christchurch model. Unless you expect installed prices to fall by more than that, waiting does not pay.
EECA model, 5 kW in Christchurch
Nobody knows. Compare real quotes now.
There are two good reasons to wait, and neither is about panel prices: your roof needs replacing within a few years, or the quotes you have are too vague to compare.
Holding off for a government scheme is a separate question. Our guide to waiting for a solar subsidy after the 2026 election sets the promised loans and grant against the cost of delay.
Solar finance and green home loans in New Zealand
EECA says most major New Zealand banks offer zero or very low-interest home energy loans, often as a mortgage top-up, and that solar panels, batteries and inverters may be eligible. EECA's bank summary was current as at June 2026 and listed examples from ANZ, ASB, BNZ and Westpac. Lending criteria, terms, fees and exclusions apply. [4]
A cheap loan does not fix an overpriced quote. Check the quote first, then check what the repayments look like once the low-rate period ends.
Network approval can affect the real value of solar
If your system connects to the grid, the quote needs to account for your local distributor. For a Canterbury property, that could mean Orion, MainPower, EA Networks or Alpine Energy, depending on the property. Export approval, inverter settings and metering can affect both installation steps and expected savings. Our Canterbury lines company table shows which network covers your area and its current export limit.
Orion says generation must have express written approval before being connected.
MainPower lists a 10 kW default export limit for small-scale residential and business customers, subject to constraints. See our MainPower export limits guide.
Both now allow up to 10 kW export for most homes, but EA Networks assesses every application and some Mid Canterbury areas are congested: see our EA Networks export limits guide. Alpine names 11 congested South Canterbury areas: see our Alpine Energy export limits guide.
The Electricity Authority's 2026 export-limit rule introduced a 10 kW default static export limit for qualifying straightforward small-scale distributed generation, but distributors can apply lower limits where a standardised network assessment justifies it. [5]
Building consent is often exempt, but the conditions still matter
Since 23 October 2025, qualifying roof-mounted arrays can be installed without building consent. MBIE says arrays under 40 square metres qualify under the exemption when its conditions are met. Larger arrays or higher design wind speeds require a Chartered Professional Engineer to design or review the work. Exempt work must still comply with the Building Code, the local district plan and the exemption conditions. [7]
Ask the installer to state whether the proposal relies on an exemption, who checks structural and weathertightness details, and whether any engineering or council work is included in the price.
Why three solar quotes can come back with three different prices
This is normal. The cheapest quote is often cheapest because something is missing: scaffolding, metering, a proper inverter or realistic savings assumptions. Line the quotes up by price per watt, then go through what each one excludes.
Ask each installer to show
- Total installed price including GST and every stated exclusion.
- Panel count and wattage, inverter size and exact equipment models.
- Scaffolding, switchboard, metering and network allowances.
- Expected annual generation and year-one bill reduction.
- Assumed import rate, export rate and self-use percentage.
- Network application and metering responsibilities.
- Warranty, monitoring and after-sales support.
What to have ready before asking for New Zealand solar quotes
You do not need to know what size system you want. You need enough detail for an installer to stop guessing.
New Zealand solar cost questions
How much do solar panels cost in Canterbury in 2026?
EECA's typical national figures are $8,500 for a 3 kW system, $11,500 for a 5 kW system and $20,000 for a 10 kW system, including standard install and GST. Canterbury quotes may differ because of roof access, electrical work, equipment choice, battery storage and network requirements.
Is solar cheaper in Christchurch than rural Canterbury?
Not always, but Christchurch and nearby suburbs can have simpler access than some rural, farm or shed installs. Rural jobs may involve larger roofs, longer cable runs, three-phase supply, different safety planning and different export considerations.
What is a realistic solar payback period?
EECA gives 7 to 10 years as a typical payback in the right circumstances when a household uses most of the solar power generated. Borrowing costs, batteries, export rates and usage patterns can all change that.
Should I include a battery in my first quote?
It is worth pricing, but ask for the battery to be shown separately. Solar without a battery often has the cleaner financial return, while a battery may be useful for evening use, backup power or greater self-consumption.
What installed price per watt should I expect?
Dividing EECA's example package prices by system capacity gives about $2.83/W for 3 kW, $2.30/W for 5 kW and $2.00/W for 10 kW. These are derived comparison points, not a market average. Roof complexity, equipment and included work can justify a different figure.
Does a New Zealand home need a 6.6 kW system?
No. It is one possible package size, not a New Zealand rule. The right capacity depends on the home's power use, roof, export settings and future loads such as an EV or electric hot water.
Do roof-mounted solar panels need building consent?
Many installations can use the roof-mounted array exemptions introduced in October 2025, but the detailed size, wind, structural and design conditions still apply. Exempt work must comply with the Building Code and district plan.
Can finance make solar worthwhile sooner?
It can help with cashflow if you qualify for a low-interest home energy loan, but the quote still needs to stack up. Read the bank terms, check what happens after the low-rate period, and get independent financial advice if you need it.
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- EECA: Breaking down home solar costs and savings
- EECA: Solar payback calculator
- EECA: Make the most of your home solar system
- EECA: Bank loans for home energy upgrades
- Electricity Authority: New rules encourage more solar to networks
- EECA: Planning the right home solar system for you
- MBIE Building Performance: Roof-mounted solar panel consent exemptions
- Orion: Generation connection guidance
- MainPower: Solar and distributed generation
- EA Networks: Distributed generation
- Alpine Energy: Generating electricity