Solar ROI Calculator

Calculate the return on investment for your solar power system

System Size (kW)

Cost per Watt ($)

Electricity Rate ($/kWh)

Annual Rate Increase (%)

Peak Sun Hours per Day

How to Use

Required Information

System Size:
Total size of your solar system in kilowatts (kW)
Cost per Watt:
Average installed cost per watt in your area

Understanding Results

ROI:
Return on investment over 20 years
Payback Period:
Years until the system pays for itself