Solar Panel Calculator
Estimate solar panel system size, output, and offset percentage
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How to Use This Calculator
Roof Area.
Sun Hours.
Usage.
Get kWp.
Understanding Solar Panel Calculations
Photovoltaic effect.
Efficiency (18-22%).
Insolation.
Grid-tie.
Formula & Calculations
Area x Efficiency x Insolation
Key Factors to Consider
Shading
Orientation (South)
Roof pitch
Incentives
Frequently Asked Questions
1Payback?
5-8 years typically.