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Solar & Energy Calculators
Solar ROI, home energy audits, and utility cost comparisons
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Solar Panel ROI Calculator
Calculate solar payback period, 25-year savings, and net cost after the 30% federal tax credit.
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Solar vs Grid Cost Comparison
Compare 25-year total costs of solar ownership vs staying on utility power.
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Home Energy Audit Calculator
Estimate annual electricity usage and costs by appliance. Find your biggest energy hogs.