Solar Panel Calculator

Calculate solar panel system size, costs, and energy production using NREL and DOE data

Roof Area (m²)(Available Space)

Daily Sunlight Hours(Average)

Electricity Rate ($/kWh)

Monthly Energy Consumption (kWh)

Location(Solar Region)

Panel Efficiency (%)(Typical: 15-22%)

Installation Cost ($/kW)(Before Incentives)

Incentive Percentage (%)(Tax Credits/Rebates)

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Quick Tips

1Use consistent units throughout calculations
2Consider significant figures in results
3Document experimental conditions
4Verify results with control calculations