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Payback Calculator
Solar Payback Calculator
Calculate ROI, payback period, and lifetime savings for your solar investment.
System Cost ($)
System Size (kW)
Federal Tax Credit (%)
0%
22%
26%
30%
State/Local Incentives ($)
Annual Production (kWh)
From Panel Sizing Calculator
Electricity Rate ($/kWh)
Annual Rate Increase (%)
Panel Degradation (%/year)
Calculate Payback
Results
Payback Period
-
Gross System Cost
-
Federal Tax Credit
-
Net System Cost
-
Cost per Watt
-
Year 1 Savings
-
25-Year Savings
-
25-Year ROI
-
Cumulative Savings
Year 1
Year 13
Year 25