Solar Payback Calculator

Estimate the annual value and simple payback of a solar PV system using location-specific production and tariff inputs.

Estimate solar value and payback

Estimated annual production6,500 kWh
Used on site4,225 kWh
Exported to grid2,275 kWh
Estimated annual value$897
Simple payback11.1 years

Important: this does not include financing, tax credits, maintenance, system degradation, battery costs or future tariff changes. Production depends on roof orientation, shade and local weather.

Why self-consumption matters

Electricity used in the home often avoids a different price from electricity exported to the grid. Entering both rates makes the estimate more useful than treating all production as identical.

What this does not model

This is a simple cash-payback estimate. It does not forecast tariff changes, performance degradation, financing, incentives, maintenance or battery economics.