Solar Panel Payback Period Calculator
Detailed Payback Analysis
Full payback calculation with incentives and rate escalation
Quick Estimate
Formula
Net Cost = System Cost − (System Cost × ITC%) − State Incentives; Annual Savings = Σ(Production × (1−Degradation)^yr × Rate × (1+Escalation)^yr); Payback = Year where Cumulative Savings ≥ Net Cost
Frequently Asked Questions
What is the typical solar panel payback period?
The average solar payback period in the US is 6-10 years, depending on your location, electricity rates, and available incentives. States with high electricity rates (CA, MA, NY) often see payback in 5-7 years, while states with low rates may take 10-12 years.
How does the 30% federal solar tax credit work?
The Investment Tax Credit (ITC) lets you deduct 30% of your solar installation cost from federal taxes. For a $25,000 system, that's $7,500 off your taxes. The 30% rate is available through 2032, then drops to 26% in 2033 and 22% in 2034 under the Inflation Reduction Act.
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