Real solar tools.
Built for NZ.
Knowledge is power. We've built these
six tools to put the power back
where it belongs: with the homeowner. Solar is genuinely hard to navigate,
especially when everyone you're talking to has something to sell.
Cut through the noise with real data on your roof and power bill.
See solar on your actual roof
Enter your address and answer a few questions. We'll measure your
roof's shape, size, pitch and shading to produce an interactive 3D
model of your own home with savings and payback estimates.
- Built from LINZ aerial imagery and open NZ Government LiDAR
- Sun and shading worked out face by face, with NIWA irradiance data
- Free to use and fast, about three minutes from address to report
Compare 22 NZ solar panels
Choose up to three panel brands and compare them side by side on efficiency, price, degradation, warranty, coastal rating and value per watt.
- Nothing estimated: Missing specs are marked as "Not published"
- Shows what degradation actually costs you by year 25
- 22 panels, 15 brands, with manufacturer's datasheets
- Prices are indicative NZ supply-only estimates
Find the best solar export rates
Upload a recent power bill and we'll rank NZ retailers by what they'd pay you for export, and what staying on your current plan costs you over the lifetime of a solar system.
- Built from your own bill, not a household average
- Retailer buy-back rates, ranked from 14 NZ retailers
- Rates you can actually get, on your lines network
- Your bill decoded: plan name, rates, peak windows, usage
Compare 23 NZ solar inverters
Choose up to three inverter brands and compare them side by side on output, efficiency, warranty, price and grid fit.
- Unpublished specs marked "Not published", never guessed
- Export limits for all 30+ NZ lines networks
- 23 inverters, 10 brands, with manufacturer's datasheets
- Checked against CEC and lines-company compliance lists
Compare 24 NZ home batteries
Choose up to three battery brands and compare them side by side on usable capacity, backup, chemistry, warranty and value per kWh.
- Value per usable kWh, not the headline capacity
- A source link on every row, confidence-rated and dated
- 24 batteries, 15 brands, with manufacturer's datasheets
- Prices are indicative NZ supply-only estimates
Find and compare green loans
Pick your bank and answer a few questions, and we'll let you know
if you could qualify for 0% or 1% solar finance.
- Westpac, ANZ, ASB, BNZ and Kiwibank
- Not just the headline rate: what you pay after it ends
- The maximum you can borrow, and how long the rate lasts
- The equity you need: 20% at most banks, none at Kiwibank
Where our numbers come from
LINZ, NIWA, MBIE, a manufacturer's datasheet, or your own bill.
Your roof from LiDAR, your bill read line by line, every equipment spec from manufacturer sheets. We start from your house, not a typical one.
Equipment specs are rated for confidence and dated. If a manufacturer doesn't publish a number, we mark it as Not published.
If the survey data can't support a reliable model, the roof tool says so instead of producing a number that looks fine.
free to use
Free to use, NZ-owned, and independent. We are paid a small referral fee only if you choose to get matched with an installer.
New to all this? Start with whether solar is worth it, work out how many panels you need,
check the current buy-back rates, then look at how to pay for it.
Ready for real quotes?
Get matched with vetted local installers and see real quotes for your home. It’s free, with no obligation.
Compare up to 3 quotesSolar tool FAQs
Yes, all six are free. There is no signup to browse the panel, inverter and battery comparisons or the green loan checker. The roof analysis and the power bill check ask for your address or your bill because that is what they measure.
If you have not gone solar yet, start with the roof analysis: it measures your actual roof and gives you a system size and payback to work from. If you already have panels, start with the export rate checker, which ranks retailers on what they would pay for the power you send back.
Named sources, not industry averages. Roof geometry comes from LINZ aerial imagery and open NZ Government LiDAR, sun and shading from NIWA irradiance data, tariffs from MBIE, and every panel, inverter and battery spec is read off the manufacturer's own datasheet.
It measures your roof's real shape, size, pitch and shading rather than assuming a typical house, so the system size and layout are specific to your address. Where the survey data cannot support a reliable model, it declines and says so instead of producing a number.
Yes. The tool reads your own bill rather than a household average, which is what lets it rank retailers on what they would actually pay you. Only your export volume is estimated; every other figure comes off the bill.
They cover 22 solar panels across 15 brands, 23 inverters across 10 brands and 24 home batteries across 15 brands. Where a manufacturer does not publish a figure it is marked as not published rather than estimated, and prices are indicative NZ supply-only estimates.