Generation
Checked locations use the European Commission Joint Research Centre PVGIS model. Roof shading, obstructions and local design constraints still need review.
NEW ZEALAND SOLAR PLANNING TOOL
What could solar save at your home?
Build an indicative solar and battery estimate from your roof, power use, electricity rates and system cost. See the energy flow—not just one headline number.
- Location-based solar generation
- Solar-only and battery comparison
- Payback and 25-year estimate
01
YOUR HOME
Start with the roof.
Your location, roof direction and pitch shape the generation estimate.
Using a Christchurch reference until you check the address.
HOW TO USE THE RESULT
A planning estimate, with the assumptions left visible.
Energy use
Self-consumption responds to both the usage pattern you select and the size of the array relative to annual use. Smart-meter interval data remains more precise.
Financials
Purchase-rate changes apply only to avoided grid imports; future export rates are held flat. Battery estimates assume 90% round-trip efficiency, up to 300 cycles a year and 2% annual capacity fade. Replacement and maintenance costs are excluded.