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Solar Panel Payback Calculator

Estimate solar savings, payback, and 25-year net benefit.

Inputs

Inputs and assumptions

System size

Cost per watt

Federal credit rate you qualify for.

Annual production per kW

Output lost each year; 0.5% is typical.

Rate

Annual rate increase

Set 0 to model a cash purchase.

Loan term

Inverter replacement (~yr 12)

Result

Loan payment (if financed)
$95.28
25-year net benefit
$41,424.00
Net cost after credit
$13,720.00
Simple payback
8.2 yrs
First-year savings
$1,666.00
This calculator is a first-pass screening tool. Verify your utility tariff, metered usage, equipment specifications, and installer quotes before making a decision.

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Workspace

Keep the assumptions with the result.

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