45X Guidance: Qualifying Components, Phase-Out, and Form 7207

The Section 45X Advanced Manufacturing Production Credit pays U.S. manufacturers a per-unit federal tax credit for producing specified clean-energy components and selling them to unrelated buyers. Created by the Inflation Reduction Act of 2022, it covers solar components, wind components, inverters, battery cells and modules, critical minerals, and electrode active materials, with statutory rates that run from fractions of a cent per watt up to $35 per kilowatt-hour. Every credit is capped at the manufacturer’s actual production cost for the component, which is the detail that most often surprises first-time claimants.

Which Components Qualify and at What Rate

The statute lists eligible components and assigns each a rate tied to a physical measurement or, in a few cases, a percentage of production cost. Tracking wattage, area, weight, or capacity accurately is built into compliance from day one.

Solar

Photovoltaic cells (thin-film or crystalline): 4 cents per watt of direct current capacity
Photovoltaic wafers: $12 per square meter
Solar-grade polysilicon: $3 per kilogram
Torque tubes: 87 cents per kilogram
Structural fasteners: $2.28 per kilogram¹

Wind

Wind component rates are applied to the total rated capacity of the completed turbine the component is designed for, on a per-watt basis:

Blades: 2 cents per watt
Nacelles: 5 cents per watt
Towers: 3 cents per watt
Offshore wind foundations, fixed platform: 2 cents per watt
Offshore wind foundations, floating platform: 4 cents per watt

A related offshore wind vessel earns 10% of the vessel’s sales price, the only component pegged to revenue rather than physical specifications.²

Wind has a hard deadline the other categories do not. The credit terminates for any wind energy component produced and sold after December 31, 2027. There is no phase-out ramp; it goes to zero.²

Inverters

Inverter rates, in alternating current watts, scale steeply with device size:

Central: 0.25 cents per watt
Utility: 1.5 cents per watt
Commercial: 2 cents per watt
Residential: 6.5 cents per watt
Microinverter or distributed wind inverter: 11 cents per watt

A microinverter earns 44 times the per-watt credit of a central inverter, reflecting higher per-unit manufacturing cost at smaller scales.¹

Battery Cells and Modules

Battery cells earn $35 per kilowatt-hour of capacity. Battery modules earn $10 per kilowatt-hour. If a manufacturer produces both, the credits stack: $35 for the cell plus $10 for the module that houses it, for $45 per kilowatt-hour combined.¹

Critical Minerals

Applicable critical minerals earn 10% of the taxpayer’s production costs. More than 50 minerals qualify, including aluminum, cobalt, gallium, germanium, graphite, lithium, manganese, nickel, and rare earth elements such as neodymium and dysprosium. Metallurgical coal is the exception: 2.5% of production costs. The minerals must be processed, converted, refined, or purified to specified purity levels; raw extraction alone does not qualify. Treasury has no authority to add minerals to the statutory list.³

Electrode Active Materials

Cathode and anode powders and similar electrode active materials also earn 10% of production costs. The final regulations treat them as a distinct category from critical minerals, with their own recordkeeping and supplier certification requirements.³

The Production Cost Cap

Every 45X credit is capped at the manufacturer’s actual production cost for the component. Whichever is lower, the statutory rate or the production cost, is what you get. Manufacture a battery cell with a capacity-based credit of $35 per kilowatt-hour at a production cost of $22 per kilowatt-hour, and the credit is $22.³

The cap runs across every category. For components on a flat per-unit rate, low manufacturing cost can pull the credit down substantially. For critical minerals and electrode active materials, where the credit is already 10% of production costs, the cap is effectively redundant.

What counts as production cost matters. The October 2024 final regulations expanded includable costs to indirect costs under Section 263A, such as employee benefits, payroll, equipment depreciation, and production-related taxes and insurance. For critical minerals, the final rules also permit inclusion of material and extraction costs. Both changes raised the effective credit for manufacturers who had been running against a tight cap.³

Domestic Production and Sale to an Unrelated Buyer

Production must occur in the United States or a U.S. territory (Puerto Rico, Guam, American Samoa, the U.S. Virgin Islands, and the Northern Mariana Islands), as part of the taxpayer’s trade or business, and each component must be new rather than refurbished or recycled.⁴

The credit triggers on a sale to an unrelated person. Internal transfers between affiliated companies under common ownership generally do not qualify. Relatedness for this purpose follows the common-control rules of Section 52(b).³

There is one important exception. If a manufacturer incorporates an eligible component into a larger eligible component that is then sold to an unrelated buyer, the statute treats the incorporation as a deemed sale. A company that makes both battery cells and battery modules can claim the cell credit when the cell goes into the module, then claim the module credit when the module is sold.¹

In contract manufacturing, the entity that actually performs the production activities claims the credit, not the entity that contracted for the work. Under the final regulations, “produced by the taxpayer” requires substantially transforming materials into a functionally different eligible component, not mere assembly.³

One coordination rule to note: a manufacturer cannot claim 45X credits for components produced at a facility if the basis of any property in that production unit was used to claim the Section 48C Advanced Energy Project Credit after August 16, 2022. The restriction applies at the production-unit level. If a plant runs separate production lines and only one used 48C, other lines can still generate 45X.⁵

Phase-Out Timeline

For most eligible components other than wind and critical minerals:

Through 2029: 100% of the statutory credit
2030: 75%
2031: 50%
2032: 25%
After 2032: 0%¹

Critical minerals other than metallurgical coal phase out on a one-year-delayed schedule:

Through 2030: 100%
2031: 75%
2032: 50%
2033: 25%
After 2033: 0%

Wind has no ramp. Every wind component produced and sold after December 31, 2027 earns zero.²

Turning the Credit Into Cash

A tax credit only helps if you can use it. Section 45X gives manufacturers two monetization paths beyond simply offsetting their own tax liability.

Direct Payment

Tax-exempt applicable entities can elect to receive the 45X credit as a cash payment from the IRS. Taxable manufacturers can also opt in, but only for a window of five consecutive tax years. Once a taxable manufacturer elects direct payment for a given year, the election automatically carries forward for the next four years ending before January 1, 2033. The manufacturer can revoke the election for any remaining year, but the revocation is permanent for the rest of the five-year period.⁶

You cannot use both direct payment and credit transfers in the same year. Pick one path per year.⁶

Credit Transfers

Alternatively, under Section 6418, a manufacturer can sell all or part of its 45X credits to an unrelated buyer for cash. The buyer claims the credit on its own return. The cash the manufacturer receives is not taxable income, and the buyer cannot deduct the purchase price. A credit sold for 90 cents on the dollar nets the manufacturer 90 cents tax-free.⁷

The transfer election is irrevocable for the year it covers, must be made by the return’s due date including extensions, and the credit cannot be re-transferred by the buyer. Buyer and seller must be unrelated.⁷

Carryback and Carryforward

If a manufacturer does not use direct payment or a transfer, the 45X credit flows into the general business credit under Section 38. Unused general business credits can be carried back one year and forward 20 years. Credits claimed through the elective payment election under Section 6417 can be carried back three years instead of one.⁸

Pre-Filing Registration

Before electing direct payment or transferring credits, the manufacturer must complete IRS pre-filing registration through the Energy Credits Online portal and receive a registration number for each applicable credit property. Without that number, the election fails. Registration must happen after the facility is placed in service, no earlier than the beginning of the tax period when the credit is earned, and at least 120 days before the return’s due date including extensions.⁹

The 120-day rule pulls the work well ahead of tax season. A calendar-year corporation filing by April 15 with an extension to October 15 should complete registration no later than mid-June. Missing the window does not destroy the credit itself, but it blocks direct payment or transfer for that year.

Filing Form 7207

Form 7207 is the return attachment for calculating and claiming the credit. It requires detailed data for every eligible component sold during the tax year, broken out by component type: kilowatt-hours for battery cells and modules, watts for solar cells, square meters for wafers, and total production costs for critical minerals and electrode active materials.⁴

Form 7207 attaches to the manufacturer’s annual income tax return. Partners and S corporation shareholders whose only source of the credit is a pass-through entity generally do not file Form 7207 themselves and instead report the credit on Form 3800, General Business Credits.¹⁰

Supporting documentation should cover production logs, sale dates, the identity of the unrelated purchaser, and the capacity or weight measurements for each unit. If you use the deemed-sale rule for components incorporated into larger components, keep a separate trail showing when each component was integrated and into what.

Extra Substantiation for Critical Minerals and Electrode Active Materials

Manufacturers claiming the 10% cost-based credit for critical minerals or electrode active materials face heavier substantiation under the final regulations. If direct or indirect material costs are included in the production cost calculation, the taxpayer must attach supplier certifications to the return and keep supporting records.

Each supplier certification must include the supplier’s employer identification number, a signed statement under penalties of perjury that the supplier is not claiming a 45X credit for the same materials, and a statement confirming the supplier is not aware of any prior supplier in the chain that claimed a 45X credit for those materials.

The manufacturer must also prepare or obtain documentation with an analysis showing the purchased materials did not already qualify as an eligible component when acquired, a full list of material costs included in the production cost calculation, and records establishing that the materials were actually used in producing the claimed mineral. Failing to attach the certifications, or to include an “available upon request” statement on the return, counts as a failure to substantiate the credit.³

For components on flat per-unit rates, such as battery cells or solar wafers, the recordkeeping burden is lighter. Accurate capacity and quantity data, production logs, and sale documentation are the core. Cost-based credits are inherently more audit-prone than rate-based ones.

Legislative Changes to Watch

As of mid-2025, both the House and Senate have advanced budget reconciliation proposals that would change 45X materially. The House-passed bill would terminate credits for all components, including critical minerals, after 2031. The Senate Finance Committee version would accelerate the critical mineral phase-out to begin in 2031 and end in 2034, end the deemed-sale rule for components incorporated into larger components for sales during tax years beginning after December 31, 2026, and add restrictions barring credits for components manufactured with assistance from certain foreign entities.

Neither proposal was enacted at the time of writing. The rates, definitions, and phase-out schedules above reflect the law as enacted by the Inflation Reduction Act and the October 2024 final Treasury regulations. Manufacturers running multi-year projections should treat the current statutory phase-out as the baseline and build contingency scenarios around an accelerated one.

1
Office of the Law Revision Counsel. 26 USC 45X – Advanced Manufacturing Production Credit
2
Office of the Law Revision Counsel. 26 USC 45X – Advanced Manufacturing Production Credit
3
Federal Register. Advanced Manufacturing Production Credit
4
Internal Revenue Service. Instructions for Form 7207
5
Federal Register. Section 45X Advanced Manufacturing Production Credit
6
Office of the Law Revision Counsel. 26 USC 6417 – Elective Payment of Applicable Credits
7
Office of the Law Revision Counsel. 26 USC 6418 – Transfer of Certain Credits
8
Internal Revenue Service. Instructions for Form 3800 and Schedule A
9
Internal Revenue Service. Register for Elective Payment or Transfer of Credits
10
Internal Revenue Service. Instructions for Form 7207 – Advanced Manufacturing Production Credit