Domestic Content ITC Calculator
The 10% domestic content ITC adder is worth millions — but only if you hit the threshold without overpaying
Use the free interactive tool below to calculate your project’s domestic content percentage.
See exactly how much your modules need to contribute based on your inverter, racking, and system configuration. Because U.S.-made cells still carry a premium, the lowest-cost path is usually a blended purchase that hits the target to qualify for the domestic content bonus credit without overpaying.
Once you have your target, Anza’s solar platform can help you see which modules or module blends are available and meet your commercial and risk criteria. Our expert Advisory Services team, which has supported over 9 GW of POs, can help you ensure you have the best deal.
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| Manufactured Component | Maximum % | User Input | DC% achieved | |
|---|---|---|---|---|
Target threshold: 50.0% · per IRS Notice 2025-08
on Project
Disclaimer: This analysis computes the required module count assuming domestic content of product components as reported by the Supplier. Anza makes no guarantee that the product delivered by the Supplier through Client’s purchase agreement with Supplier will conform to this exact domestic content calculation.
This tool does not account for the IRS domestic content bonus credit requirement that all structural steel and iron used in a project must be produced in the United States (as defined under IRS Notice 2025-08 and Section 45(b)(9) of the Internal Revenue Code). Eligibility for the domestic content bonus credit is contingent on satisfying both the manufactured products threshold calculated here and the steel/iron requirement. Projects should independently verify compliance with all applicable IRS requirements before claiming the bonus credit.
How to use the domestic content calculator
1Enter your project details
Set your safe harbor start of construction year, system type (tracker, fixed-tilt, rooftop), and whether you’re using domestic wafers. The target Domestic Content % auto-fills based on IRS thresholds.
(Built to IRS Notice 2025-08)
2
Select your module mix
Toggle “Yes” for each inverter and racking component that qualifies as domestic. The chart updates in real time to show how many Domestic Content points you’ve already banked.
3
Read your conclusion
The workbook calculates the remaining gap your modules need to close. The conclusion tells you exactly what blend ratio hits the target — and what to ask Anza for next.
Glossary
Domestic Lite Module: Modules made with some U.S. components, but not U.S. cells. Used strategically with other domestic equipment to meet the Domestic Content bonus threshold.
Domestic Cell Module: Modules with U.S.-made cells and some U.S. assembly. Carry a higher cost premium but contribute the maximum possible DC points. Typically used when inverter and racking contributions alone can’t close the gap to the bonus threshold.