Pick your city, set your bill, choose a panel — we'll size the system and project your 25-year savings in your local currency. Calibrated for New Zealand, Australia, MENA, Europe, North America, and Asia.
Peak sun hours range from ~2.7/day (UK winter-weighted) to 6.4/day (Phoenix). We use NASA SSE long-run averages and calibrate against our installed fleet — including NZ-specific data from our Auckland and Queenstown sites.
A 0.78 multiplier accounts for soiling, thermal losses (NZ runs cool, MENA runs hot, both lose yield differently), mismatch, wiring, inverter efficiency, and 0.8%/yr degradation.
CapEx combines the localized module cost with balance-of-system and installation (inverter, mounting, wiring, and labor) modelled per installed Watt and tiered by system size — smaller systems carry higher per-Watt soft costs. Lifetime savings discount each year by 0.8% panel degradation.