Calculator
Solar Savings Calculator
Estimate rooftop solar production, bill savings, feed-in credits and payback time.
How it is calculated
Monthly production ≈ kWp × peak sun hours × 30 × 0.8 (system losses). Self-used kWh save your full retail rate; exported kWh earn your municipality’s feed-in credit where one exists. Payback = cost ÷ yearly savings.
Results are estimates for planning, not bills or professional advice. For generator or inverter hookups use a changeover switch installed by a registered electrician with a certificate of compliance (CoC).
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