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Solar Panel Calculator
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Estimate energy production, savings, and payback period for solar panel installation.
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A Solar Panel Calculator that estimates daily energy production, annual savings, payback period, and CO₂ offset for a residential solar installation. Includes region-specific sun hour data and electricity rates for 10 countries.
How to Use Solar Panel Calculator
Select your region to auto-fill sun hours and electricity rate, or enter custom values. Enter the number of panels, panel wattage, system efficiency, and installation cost. Click Calculate Solar Savings to see full energy and financial projections.
Features
- ✓ 10 region presets with local data
- ✓ Annual and 25-year savings projection
- ✓ Payback period calculation
- ✓ CO₂ offset in kg per year
- ✓ System efficiency factor
Use Cases
- → Evaluating solar panel ROI
- → Comparing quotes from installers
- → Planning renewable energy adoption
- → Environmental impact calculation
Frequently Asked Questions
Most residential solar systems pay back in 5–12 years depending on location, electricity rates, and installation costs. In high-sun regions like Israel or California, payback can be as short as 4–6 years.
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