Calculator

Solar Savings Calculator

Estimate rooftop solar production, bill savings, Smart Export Guarantee income and payback time.

How it is calculated

Monthly production ≈ kW × peak sun hours × 30 × 0.8 (system losses). Self-used kWh save your full retail rate; exported kWh earn your supplier’s Smart Export Guarantee (SEG) rate. Payback = cost ÷ yearly savings.

Results are estimates for planning, not bills or professional advice. For generator hookups use a changeover switch installed by a qualified electrician.

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