Solar Payback Period Calculator Guide
Solar payback period is the time it takes for bill savings and incentives to recover your net system cost. It is a useful first check, but it depends heavily on your actual electric bill and local utility policy.
Simple formula: payback period = net system cost after incentives divided by estimated annual savings.
Inputs That Matter
- Installed cost: total quote before and after incentives.
- Annual savings: depends on usage, electricity rate, export credit, and system production.
- Rate changes: higher future rates can shorten payback, but should not be exaggerated.
- Battery cost: batteries add resilience, but may lengthen simple payback.
Best Next Step
Use the Savings calculator first, then compare the system size with Panel Count.
Next step: estimate payback from your bill, not from a generic average.