Solar Panels in New Zealand: Costs, Savings & How To Get Started

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.

How Much Does a Solar Panel System Cost in 2025?

In 2008, a 3kW system would set you back $40,000.
Today? You’ll pay around $8,000 fully installed.

The price for a 3kw solar power system in NZ graph

While global demand bumped prices slightly in 2022 and 2023, costs are falling again in 2025 — thanks to sharp drops in solar panel pricing.

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: 28/04/2025.

*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 do we know what Kiwis are really paying for solar panels and batteries?

We run an annual price survey - check out the latest results [here].

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.

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 9 to 19 solar panels. The sweet spot for many is a 5kW 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.

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

The 2025 edition of the 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 440W 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 22%. 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.