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Solar payback calculator

Estimate annual solar production, bill savings, and simple payback before comparing installer quotes.

Live estimate

Screen a quote before deeper site-specific modeling.

System size kW DC Installed cost before incentives Annual production kWh per kW Electricity price cents per kWh Bill offset percent of value captured

Estimated solar economics

ReadyAdjust inputs

Useful next step

Check electricity rate Estimate your bill Review methodology

What matters most

Payback is most sensitive to installed cost, local electricity price, usable annual production, and the percentage of solar value that actually offsets your bill.

Important: Federal residential clean energy credit defaults to $0 for new post-2025 expenditures under current IRS guidance. Local incentives and net-metering rules vary.

WattNomic

WattNomic turns public energy data into practical home-cost calculators. Estimates are for screening, not tax, legal, engineering, or financial advice.

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