Solar guides and adviceSolar advice

Ben WallisElectrician & Solar Writer

Updated 23 Oct 2026StudySolar

Are Solar Panels Worth It in New Zealand? Pros, Cons and Real Payback

An honest look at whether solar makes financial sense for NZ homeowners. Payback periods, savings data, and the scenarios where it doesn't stack up.

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Updated 23 Oct 2026GuideSolar

Is My House Suitable for Solar Panels in NZ? (2026 Guide)

Check if your NZ home is right for solar. Roof direction, pitch, shade, and structural factors explained for Kiwi houses.

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Updated 25 Oct 2026GuideSolar

How Many Solar Panels Do I Need in NZ? What Size System Fits Your Home

Work out how many solar panels your NZ home needs. Based on your power usage, roof space, and whether you're adding a battery or EV charger.

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Updated 25 Oct 2026GuideSolar

Do Solar Panels Work in Winter and on Cloudy Days in NZ?

Solar panels still generate power on cloudy days and through NZ winters. Here's exactly how much output changes and why it still works.

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Updated 23 Oct 2026StudySolar

How Much Solar Power Will I Generate in NZ? (By Region)

Solar output data for every NZ region. Auckland: 1,391 kWh/kW/yr, Wellington: 1,431, Christchurch: 1,340, Dunedin: 1,226. Monthly breakdowns and savings by city.

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Updated 23 Oct 2026StudySolar

Solar Scams in NZ: Real Cases and What They Look Like

Four NZ solar companies have failed since November 2024. Real cases, the 'free solar' / PPA trap, the inflated-payback trick, and the 9-step checklist before you sign.

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Updated 23 Oct 2026GuideSolar

Solar for Homes NZ: How It Works, What It Costs, Is It Worth It

Solar for your home in NZ from start to finish: how a system works, what a 6.6 kW system costs, the payback, the bank loans, and the buying mistakes to avoid.

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Updated 23 Oct 2026GuideSolar

Solar for New Builds NZ: The Pre-Wire and Design Guide (2026)

Solar for new builds in NZ: roof orientation, pre-wire conduit, switchboard sizing, battery-ready walls, and EDB timing. The 8 decisions to lock in at design stage to save $5k-$13k.

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Updated 25 Oct 2026GuideSolar

Solar Panel Costs NZ: What You'll Actually Pay in 2026 (From $14,000)

Real pricing data for NZ solar in 2026. System costs by size, what affects price, and how to tell if a quote is fair.

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Updated 23 Oct 2026StudySolar

How to Pay for Solar in NZ: Cash, Loans and Payment Plans (2026)

Cash vs green loans vs personal loans for solar in NZ. Real monthly payments, total interest costs, opportunity cost analysis, and the gotchas banks don't mention.

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Updated 25 Oct 2026StudySolar

Solar Panel Grants and Incentives NZ (2026)

What financial help is available for solar in NZ? Green loans, EECA programmes, and what NZ doesn't have compared to Australia and the UK.

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Updated 23 Oct 2026StudySolar

Green Loans NZ: Every Bank's Solar Loan Compared (2026)

Compare NZ solar green loans: Westpac 0%, ANZ 1%, ASB 1%, BNZ 1%, Kiwibank variable + cashback. Eligibility, terms, and which is best for you.

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Updated 23 Oct 2026StudySolar

Can I Claim Solar Panels on Tax in NZ? (2026)

How solar interacts with NZ tax, by audience. Owner-occupier, landlord, business, lifestyle block, Air BnB, and buy-back income. General info, not tax advice.

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Updated 25 Oct 2026GuideSolar

How to Read a Solar Quote: The Kiwi Buyer's Guide

Real Kiwi solar quotes have hidden gotchas. Line-by-line anatomy, the per-watt sanity check, what's missing, red flags, and a 26-row comparison rubric for 2026.

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Updated 23 Oct 2026GuideSolar

How to Get Solar Quotes in NZ (and Compare Them Properly)

How to get solar quotes in NZ: EECA's 2-3 quote rule, where to get them, what to have ready, comparing $/W like-for-like, and the red flags in the quoting process.

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Updated 23 Oct 2026ComparisonSolar

Best Solar Buy-Back Rates NZ: 13 Power Companies Compared (2026)

Compare solar buy-back rates across 13 NZ power companies. Octopus, Meridian, Mercury, Genesis, Contact, Power Edge and more.

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Updated 23 Oct 2026GuideSolar

10kW Solar System NZ: Price, Output and Is It Too Big? (2026)

10kW solar systems in NZ: $15,000-18,000 installed, 13,000-14,300 kWh a year, 22-24 panels, the 40m² engineering rule, export limits, and when 6.6kW beats it.

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Updated 23 Oct 2026ReviewSolar

Best Solar Panels NZ: Brands, Tiers and What to Look For (2026)

Compare the best solar panels available in NZ. Tier 1 brands, specs, warranties, NZ pricing, and what installers actually use. TOPCon vs PERC vs HJT explained.

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Updated 23 Oct 2026GuideSolar

String Inverter vs Microinverter NZ: Which Is Right for Your Roof?

String inverter or microinverters for your NZ solar system? Real 2026 NZ costs, shade performance, warranty terms (Fronius vs Enphase), and the honest decision rule.

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Updated 1 Nov 2026GuideSolar

Solar Battery Storage NZ: Costs, Brands, and Is It Worth It?

Solar battery prices in NZ: Tesla Powerwall, BYD, Enphase compared. When batteries make sense and when you're better off without one.

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Updated 31 Oct 2026ComparisonSolar

Best Tesla Powerwall Alternatives NZ: BYD and Enphase Compared (2026)

The best Tesla Powerwall 3 alternatives in NZ. BYD, Sungrow, and Enphase compared on price, $/kWh, inverter compatibility, and warranty. The honest decision matrix.

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Updated 1 Nov 2026ReviewSolar

Tesla Powerwall 3 NZ: Specs and Honest Review (2026)

Independent Tesla Powerwall 3 review for NZ: ~$15,600 supply-only and $19,000-24,000 installed, 13.5kWh storage, 11.5kW output, the single-phase catch, and when an alternative fits better.

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Updated 23 Oct 2026ReviewSolar

Sigenergy SigenStor Review NZ: Price vs Powerwall 3 (2026)

Sigenergy SigenStor review for NZ: stackable 5 to 9 kWh modules, 98.3% efficiency, ~$9,124 supply-only pricing, the Powerwall 3 comparison, and the 2025 safety recall.

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Updated 23 Oct 2026ReviewSolar

BYD Battery-Box NZ: Price, Models and Is It Worth It? (2026)

BYD Battery-Box review for NZ: the HVS and HVM towers sold here, what they cost installed, the compatible inverters, how backup works, and the NZ warranty fine print.

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Updated 23 Oct 2026ReviewSolar

AlphaESS NZ Review: SMILE S8 and T20 Specs, Warranty and Backup

AlphaESS review for NZ: the 8 kW S8 and 20 kW T20 hybrid systems, 9.3 kWh usable modules, backup that actually works, and what to check before you sign.

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