Guides — New Zealand
Every guide answers its question in the first two sentences, dates every price, and names every source. 18 published, grouped into the questions buyers actually ask.
Reading elsewhere? Canada guides · Nigeria guides · Pakistan guides · United Arab Emirates guides · Saudi Arabia guides · United States guides · Ireland guides · Australia guides · United Kingdom guides · South Africa guides
Start with your question
All guides
Buying
What should I buy, and how do I not get cheated?
Best Solar Panels NZ: Top Tier-1 Brands & NZ Conditions
Review the best solar panels in New Zealand. Compare Jinko, REC, Aiko, Trina, and JA Solar for efficiency, warranties, 40% higher UV, and coastal salt mist.
How to Read a Solar Quote in NZ: Line Items & Red Flags
Learn how to evaluate New Zealand solar quotes line by line. Benchmark $/W rates, hidden fees for scaffolding and switchboards, and electrical endorsements.
Solar Battery Storage NZ: Powerwall 3, Costs & Economics
Complete guide to home solar batteries in New Zealand. Compare Tesla Powerwall 3, BYD, and Sungrow, installed costs, $/kWh benchmarks, and financial payback.
Solar Buy-Back Rates NZ: Every Retailer Compared
Compare solar buyback rates across NZ power retailers. Learn how export rates from 8c to 24c per kWh work, why self-consumption matters, and July 2026 rules.
Solar Panel Costs NZ: Real System Prices & $/W Guide
Solar panel costs in New Zealand. Real installed prices from 3kW to 13kW+, cost per watt benchmarks, consent exemptions, and 0% to 1% green bank loans.
SolarZero Liquidation NZ: Contract Terms, Verofi & Leasing vs Buying
SolarZero liquidation in NZ: what happens to 25-year contracts, Verofi servicing, proposal software tricks, and 0% to 1% bank green loan alternatives.
Fixes
Why is my inverter beeping — codes, symptoms and real repair costs.
Low Winter Solar Generation NZ: Troubleshooting Seasonal Drops
Why solar panels produce less in NZ winter. Learn expected 50-60% drops, cloudy day output benchmarks, temperature gains, and troubleshooting defects.
Solar Inverter Lifespan & Panel Degradation NZ: Replacement Guide
How long solar inverters and panels last in NZ. Learn string inverter replacement costs ($1,500-$3,500), 0.4%/yr panel degradation, and failure modes.
Solar Inverter Monitoring & Fault Troubleshooting in New Zealand
Troubleshoot solar inverter faults and monitoring offline alerts in NZ. Learn app diagnostics, red light errors, and maintenance checks.
Solar Panel Cleaning NZ: Costs, Frequency & Safety Guide
How to clean solar panels in NZ. Learn 15-25% soiling losses, bird drop hotspots, coastal salt rules, $150-$230 cleaning costs, and safety shutdown.
Solar Panel Output by NZ Region: Troubleshooting Underperformance
Why is your solar system underperforming in NZ? Compare kWh output across Wellington, Auckland, and Christchurch, plus shading and thermal losses.
Systems
How do I size it, and what changed with net billing?
Distributed Generation Application NZ: Lines Company Solar Guide
How to apply for distributed generation (DG) with New Zealand lines companies. Part 6 rules, ICP numbers, 10kW export limits, and inverter approvals.
Off-Grid Solar System Sizing NZ: Battery Capacity & Winter Math
How to size an off-grid solar system in NZ. Sizing formulas, the 69% seasonal winter drop, battery autonomy calculations, and generator integration.
Solar Export Limits NZ: 10kW Code Rules & Dynamic Export
New Zealand 10kW solar export limits explained. Part 6 Code rules, Vector dynamic connections, CSIP inverter settings, and distributor policies.
Solar Hot Water vs Solar PV with Diverter NZ: 2026 Comparison
Solar thermal vs solar PV with a cylinder diverter in NZ. Compare $7,000-$9,000 thermal costs, 18-month diverter payback, EECA data, and heat pumps.
Solar Panel Installation Process NZ: Timelines, Steps & Rules
Complete guide to residential solar installation in NZ. Learn timelines, 1-2 day roof install, EWRB compliance, inspector RoI sign-off, and smart meter swap.
Solar Panel Roof Mounting NZ: Wind Zones, Racking & Coastal Standards
Solar panel mounting in NZ wind zones. Learn 225 km/h tolerances, uplift physics, racking failure points, 4000 Pa ratings, and coastal salt mist standards.
Solar System Sizing NZ: Maximising Self-Consumption Economics
How to size a residential solar system in NZ for maximum ROI. Compare 5kW vs 10kW yields, self-consumption savings (37c-45c), and diminishing returns.