Global Solar ROI Calculator

Select Country: System Size (kW): Cost per Watt ($): Avg. Sun-Hours per Day: Electricity Rate per kWh: Electricity Rate Escalation (% / Year): Federal Incentive/Subsidy (%): Your Yearly Electricity Usage (kWh): Loan:

Loan Term (Years):

Interest Rate (%):

Do you live in the US, Canada, UK, Germany, Japan or Australia and are thinking about switching to solar? But if you don’t understand how much money you can save by going solar, then you are in the right place.
The Global Solar ROI Calculator is a tool that helps you find out how quickly your solar investment will pay for itself – based on real-world data, live electricity rates, sun hours, subsidies and more.

How does this calculator work?

This calculator analyzes several key factors and our experience to estimate the total solar system cost (with or without loan), annual energy savings, payback period (in years), IRR (internal rate of return) for your investment, annual solar production taking into account degradation, and also gives you this data in custom charts and downloadable PDF reports.