Solar ROI Calculator

Payback and lifetime savings using your location's solar resource and incentives.

ZIP Code

Monthly kWh900 kWh

Usable Roof400 sqft

Shading

Orientation

Cost per Watt2.85$/W

30% Federal ITC

State credits

Rate escalation3%/yr

SOLAR

Wattfull will estimate system size, cost, payback period, and 25-year savings based on your location and current assumptions.