Solar calculator

Your day. Your night. Your solar system.

Tell us the amps you need. Explore panels, inverter capacity, battery storage, and potential Runaki savings.

Your solar estimate

Calculate to see what you need.

Solar panels

Number of panels

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Hybrid inverter

Power capacity

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Battery storage

Number of battery modules

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Your monthly electricity costs

See how much you could save on your monthly electricity bill.

Estimate only. Our team will confirm the right equipment for your property.

Assumptions & Runaki rates

Estimates only. Final sizing, savings, backup runtime, structural suitability, and compatibility require a site visit and engineering assessment.

Daytime usage: 8 h
Peak sun hours / day: —
Power factor: —
Solar performance: 80%
Usable battery capacity: 90%
Battery efficiency: 90%

Panel power is measured in W; inverter capacity in kW; battery energy in kWh. Nighttime storage includes energy losses and discharge-power limits.

Sun hours are planning assumptions, not measured city forecasts. Three-phase sizing assumes balanced loads. Motor starting loads and installation limits require engineering review.

Choose your property type to see Runaki rates.

Savings compare the estimated Runaki energy bill before and after solar, using the configured rates. No export income is assumed.

Official Runaki tariff reference ↗

Your day. Your night. Your solar system.

Your electricity needs