How Much Do Solar Panels Cost in NZ in 2026? Real Prices for 6kW, 8kW and 10kW Systems

If you've been collecting solar quotes, you've probably noticed they don't line up. One installer says $12,000 for a system, another says $16,000 for what looks like the same thing. This article gives you the 2026 price benchmarks by system size, shows what pushes a quote up or down, and walks through how to check a quote yourself.

One caveat up front: there's no single official price list for NZ solar. The figures below come mainly from one comparison site's dataset, and other sources give somewhat different numbers. Treat everything here as a yardstick for judging quotes, not a price you're entitled to.

At a Glance

Figures are from Mysolarquotes NZ (cost page updated 9 October 2026), based on 151 verified 2026 residential installs and 279 quotes. All prices are installed and include GST.

• 6kW: about $12,000
• 8kW: about $15,500
• 10kW: about $19,000
• Average cost per watt: about $2.04/W; the middle half of installs sat between $1.74 and $2.36/W
• Bigger is cheaper per watt: systems under 5kW averaged about $2.54/W, a 10kW system about $1.90/W
• Battery add-on: a typical 11kWh battery on its own is about $13,000
• Government subsidy for residential solar: none currently

Installed Price by System Size

Here's the Mysolarquotes NZ benchmark by size, with the cost per watt worked out from each price (price divided by system watts):

Source: Mysolarquotes NZ, 9 October 2026. The $/W column is our arithmetic from their prices.

A few things stand out. Price doesn't rise in a straight line with size, because a lot of the cost (scaffolding, switchboard work, consent and connection paperwork, the installers' travel time) is fixed whether you put on 16 panels or 25. That's why each extra kilowatt gets cheaper. Going from 6kW to 10kW adds roughly $7,000 in this data, or about $1,750 per extra kW.

It's also why small systems look poor value per watt. Under 5kW the same dataset averages about $2.54/W.

Bigger isn't automatically better, though. A system only makes sense if you can use or sell the power it produces. Our complete solar guide covers sizing, and the 10kW end of the range has its own connection rules, which we explain in our article on the 10kW export limit.

Other sources give different numbers

Don't be alarmed if your quotes sit outside the table. Other sources in the market differ:

• Installer Solar.co.nz advertises 6.6kW systems "from $11,990" and 8kW systems "from $14,490". "From" prices are the entry point, not necessarily what you'd pay for your roof.
• Other comparison sites quote 6.6kW systems at around $12,500 to $16,500.

So the honest picture is a spread, not a number. That's the main reason to get three quotes for the same size system.

What Moves the Price

The Mysolarquotes data gives one clear example: systems with microinverters or premium panels averaged about $2.36/W, noticeably above the $2.04/W overall average. In general, these are the things that change a quote:

• System size. Covered above: bigger means a lower cost per watt but a higher total.
• Panel and inverter quality. Premium panels and microinverters (a small inverter on each panel rather than one for the whole system) cost more up front. They can have advantages on shaded or awkward roofs, but ask what you're getting for the extra money.
• Roof type and access. A simple, low, unobstructed roof is quicker and cheaper to work on than a steep, tall or complicated one. Expect scaffolding costs to appear on the quote.
• Switchboard and wiring. Older homes sometimes need switchboard upgrades before solar can go in.
• Location. Installers in remote areas have travel time to build into the price.
• Battery-ready hardware. A hybrid inverter that can take a battery later costs more than a standard one. Worth it if you're likely to add storage, wasted money if you're not.

We can't give you a reliable dollar figure for each of these, and you should be sceptical of anyone who does without seeing your roof. Ask your installer to itemise them.

Adding a Battery: What It Costs

Batteries are the biggest swing factor in total price. The same dataset reports:

• Battery alone: a typical 11kWh battery costs about $13,000, with most people paying between $10,000 and $16,500.
• Cost per kWh falls with size: from about $1,530 per kWh for 5 to 7kWh batteries down to about $1,090 per kWh for 15kWh and above.

For solar and battery installed together, Mysolarquotes publishes median prices, but the samples are small (only 4 to 9 responses each), so read these as indicative only:

A battery is a different kind of purchase from panels. Panels cut your bill directly. A battery mostly shifts when you use solar power, and also gives you some backup if the grid drops (check whether the system you're quoted actually provides backup, because many don't by default). For a closer look, read our piece on whether solar batteries are worth it in NZ.

What About Payback?

Price is only half the story, and we cover the other half separately in our solar payback period article. For a rough reference, Mysolarquotes reports installer-estimated (not measured) median payback of 6.9 years for solar-only, about 9 years with a battery, and 11.1 years for systems under 5kW. Your own number depends on how much of your power you use in daylight, so run your household through our savings calculator rather than relying on averages.

Two things are worth knowing as background. The Electricity Authority reported on 12 August 2026 that retail power prices rose an average of 6.8% in the first half of 2026, after 8.0% in 2025. It said lines charges made up 54% of that increase and are expected to keep rising, more slowly, through 2030. Higher power prices make the electricity you generate more valuable, but nobody can promise where prices go from here.

On the other side, what you earn for exported power is not regulated. There's no mandated minimum buy-back rate. A Solarscout retailer comparison (checked September 2026) shows flat export rates typically around 10 to 12.5c/kWh, with time-varying plans paying more at peak. From 1 July 2026, large retailers have had to offer time-varying plans. Rates change, so check your retailer's current offer, and see our article on time-of-use plans and solar buy-back.

How to Read and Sanity-Check a Quote

This is where most people save money. Run through these steps for every quote.

1. Confirm GST

Residential quotes should show a GST-inclusive total, but trade-oriented quotes sometimes quote ex-GST. Since GST is 15%, a $13,000 ex-GST quote is really $14,950. Ask each installer to state "GST inclusive" or "plus GST" clearly, and compare like for like.

2. Work out the cost per watt

Divide the total installed price by the system size in watts. A 6.6kW system quoted at $14,000 is 14,000 / 6,600 = about $2.12/W. Compare that with the benchmarks:

• Around $1.74 to $2.36/W is where the middle half of 2026 installs landed in the Mysolarquotes data.
• Well below that range deserves a question: what's been left out, or what's the equipment?
• Well above it deserves a question too: is it premium hardware, a tricky roof, or just a high price?

A higher $/W isn't automatically a rip-off and a low one isn't automatically a bargain. It's a prompt to ask why.

3. Compare the same thing

Check each quote lists:

• Panel brand, model and wattage, and the number of panels
• Inverter brand and model (string, hybrid or microinverters)
• Warranty terms for panels, inverter and workmanship, and who honours them if the installer disappears
• Whether the price includes scaffolding, switchboard work, consent and the network connection application
• Monitoring app and what data it shows
• Any battery or the hardware to add one later

4. Look for red flags

• Pressure to sign today or "special pricing ends tonight"
• Vague line items, such as "solar system" with no equipment list
• A guaranteed payback period or savings figure with no workings. Payback depends on your usage, and no honest installer can guarantee it
• Claims of government subsidies for residential solar. There currently aren't any
• Large upfront deposits with no staged payment schedule
• No mention of the network connection or export rules for your area

5. Get three quotes

Given how widely the benchmarks vary, three quotes for the same size and similar equipment is the minimum. You can find solar installers in your area or request quotes through PoweredNZ and compare them side by side using the steps above.

Is There Any Help With the Cost?

Not at the moment. Unlike some heat pump and insulation programmes, there is no current government subsidy for residential solar in NZ.

Solar is a live topic ahead of the 7 November 2026 election. National's "Electrify NZ 2.0" announcement (2 October 2026) proposes letting solar owners sell to any retailer, faster network approval of solar connections, and a Home Energy Fund of low-interest loans for solar and other upgrades. No dollar amounts have been published. These are election proposals, not law, so don't factor them into a purchase decision yet. We track the detail in our election and home energy subsidy article.

What to Do Next

1. Decide a rough size. Most NZ homes land in the 6kW to 10kW range, and our solar panels guide helps you pick.
2. Estimate your savings. Use the savings calculator with your own power bill.
3. Collect three itemised quotes and calculate the $/W for each.
4. Ask questions about anything that sits outside the $1.74 to $2.36/W range.

When you're ready, get quotes from solar installers and use this article as your checklist.

Price figures in this article are from Mysolarquotes NZ (updated 9 October 2026) and are installed prices including GST. Power price and buy-back figures are from the Electricity Authority (12 August 2026) and Solarscout (checked September 2026). Prices vary between installers and over time, so confirm current figures with your quotes.