US Solar Savings Calculator
Estimate home solar production, bill offset, savings and simple payback in the United States. Free, instant and built to work well on phone or desktop.
Why use this us solar savings calculator?
The U.S. solar calculator estimates annual production, bill offset, annual electricity value and simple payback using assumptions you can edit.
Example
Enter your monthly bill, electricity rate, proposed system size, local annual yield and installer quote to compare scenarios.
Important note
It is a planning model, not a financial proposal. Tax credits, export compensation, financing, battery behavior, degradation and utility-specific rules are intentionally excluded from the simple estimate.
How to use it
Enter, paste or select the information requested above. The result updates in your browser, and you can change the inputs as many times as you need.
Sources and assumptions
The electricity-rate field is editable because rates vary by state and utility.
The starting system-cost assumption is editable and is only a planning estimate.
Frequently asked questions
Is this tool free?
Yes. The core tool is free to use.
Do I need an account?
No. You can use it without signing up.
Does it work on mobile?
Yes. Toolbox is designed for modern mobile and desktop browsers.