Solar ROI Calculator
Estimate payback time, first-year savings, and long-term value based on your system size, cost, and local rates.
Enter values and click Calculate.
Solar ROI FAQ
How accurate is this?
This is a planning estimate using sun hours, performance ratio, rate escalation and degradation. Real-world results vary with weather, shading, and your utility plan.
What’s a typical payback?
In many U.S. areas, simple payback runs 6–10 years with the 30% federal tax credit. Higher rates and good sun reduce payback.
What if my rate has tiers or time-of-use?
Use your blended average $/kWh. If you export energy, your utility’s export credit can change effective savings.