Solar Payback Calculator

Enter your electric bill, roof details, and financing assumptions to get a realistic payback timeline — not the rosy estimate from a sales pitch.

Inputs

Average monthly electric bill ($)

System quote (before incentives) ($)

Federal tax credit rate

Annual utility rate increase (%)

Entergy TX has averaged ~4% annually

Roof age (years)

Financing the system?

Loan interest rate (%)

Get quotes from vetted solar installers