James Neeld

The Developer's Brief

Approval Path for §48E Solar Credits Under the OBBBA Foreign-Entity Rules

Short Answer

The operative obstacle in these deals is not the statute but the unavailability of a tax credit opinion: the credit purchaser’s counsel will not opine. That reduces to one of three issues — the MACR calculation, the manufacturer’s PFE status, or a firm-wide reluctance to opine while the PFE definition remains unsettled — each with a different resolution (Step 9). The FEOC risk is not currently insurable (Step 10), so it must be resolved on the merits or allocated by contract.

The approval path for a post-January 1, 2026 §48E project is otherwise straightforward:

  1. Confirm the §48E pathway (not legacy §45/§48), and that neither the owner nor the credit purchaser is a prohibited foreign entity (Steps 1–2).
  2. Because construction begins after January 1, 2026, the material assistance test applies — a PSA / site control is not beginning of construction (Step 3).
  3. Compute the material assistance cost ratio and meet the threshold for the construction-start year (40% solar / 55% storage in 2026); any shortfall denies the entire credit (Steps 4–5).
  4. Support the ratio under a Notice 2026-15 method with producer-level supplier certifications (Steps 5, 7).
  5. Confirm no disqualifying effective-control or post-July 4, 2025 IP-license arrangement (Step 6).
  6. Manage the 10-year FEOC recapture and retain documentation for six years (Steps 7–8).
  7. Obtain the credit opinion — the current obstacle — and allocate residual, uninsurable risk by representations and indemnity (Steps 9–10).

Approval Flowchart

The diagram proceeds top to bottom. The continuing vertical path indicates credit eligibility; branches labeled "Denial" indicate ineligibility. Each numbered node links to its definition in the analysis below.

Start · The Project

A development with on-site solar generation (and possible battery storage). The owner intends to claim the §48E ITC and monetize it to a credit purchaser, whose counsel must opine on the credit.

begin
1

Credit Pathway: §48E vs. Legacy §45/§48

§48E

Is the credit the tech-neutral §48E ITC (facility placed in service after 12/31/2024), rather than a legacy §45/§48 credit grandfathered by pre-2025 construction? Legacy credits carry no PFE rules.

Branch · rules not applicableLegacy §45/§48 (under construction by end of 2024): PFE / material-assistance rules do not apply.
§48E · continue
2

Taxpayer-Level PFE Test

§7701(a)(51)

Is the owner (or, on a §6418 transfer, the transferee) itself a Prohibited Foreign Entity — a Specified Foreign Entity or a Foreign-Influenced Entity?

Decision: taxpayer is a PFE?

If yes · DenialCredit unavailable; and the credit may not be transferred to a Specified Foreign Entity under §6418. A U.S. developer and U.S. purchaser satisfy this requirement.
Not a PFE · continue
3

Beginning of Construction (BOC)

§7701(a)(51)(J)

Physical-work test or 5% safe harbor under Notices 2013-29 / 2018-59 as in effect 1/1/2025. A PSA / site control is not BOC.

Decision: BOC before January 1, 2026?

If pre-2026 BOC: material-assistance test not applicableOnly the entity-level test (Step 2) would apply. For a project signing its first construction contracts in 2026, BOC falls after January 1, 2026 and the test applies.
BOC ≥ 1/1/2026 · test applies
4

Material Assistance / MACR Threshold

§7701(a)(52)

Compute the MACR (non-PFE share of direct cost) and compare to the threshold for the BOC year: solar facility 40% in 2026; storage 55% in 2026 (both escalate annually).

5

MACR Calculation Method

Notice 2026-15 §4

Direct-cost method, Identification Safe Harbor, or Cost-Percentage Safe Harbor (Notice 2025-08 tables). Note the 10% de minimis rule and the separate interconnection-property carve.

Decision: MACR ≥ applicable threshold?

If below threshold · DenialThe facility is ineligible; no partial credit is available. The remedy is re-sourcing sufficient non-PFE cost (modules, inverters, racking, labor) to meet the threshold.
Meets threshold · continue
6

Effective-Control / IP-Licensing Re-Check

§7701(a)(51)(D)(ii)(III)

Any IP license or payment to a Specified Foreign Entity giving it "effective control," entered or modified on/after 7/4/2025, recharacterizes the owner as a Foreign-Influenced Entity.

Decision: any post-7/4/2025 effective-control arrangement?

If yes · DenialThe owner becomes a Foreign-Influenced Entity and the credit is lost regardless of a sufficient MACR. This commonly arises where module technology is licensed from a Chinese affiliate.
None · continue
7

Substantiation & Supplier Certifications

Cert. Safe Harbor · §6695B

Obtain producer-level (not reseller) certifications; retain MACR documentation for the 6-year assessment period; note the supplier-certification penalty regime.

8

Ongoing Recapture Exposure

§48E recapture

A payment to a PFE within 10 years after placed-in-service triggers 100% recapture — distinct from, and longer than, the normal ITC vesting period.

9

Opinion / Monetization

deal level

Basis for counsel's refusal to opine: (a) the MACR calculation; (b) producer entity status; (c) firm policy. Available measures: certifications, sponsor representations, and indemnities (insurability addressed at Step 10).

continue
10

Is the Residual Risk Insurable?

tax insurance · 2Q 2026

As of 2Q 2026, tax-credit insurers are generally not covering PFE/FEOC risk. Any appetite is conditioned on a strong "should"-level opinion and, for change-in-law, final guidance (not yet issued).

Where the opinion is unavailable · not insurableInsurability is gated on the very opinion the deal lacks. Fall back to strict legal reps and a strict indemnity backed by a creditworthy seller or parent guarantee; pricing adjustments rather than escrows.
via contractual allocation
Eligible §48E ITC available and transferable (not to a Specified Foreign Entity). Eligibility depends on a MACR at or above the threshold and the absence of disqualifying control arrangements; because the FEOC risk is not presently insurable, monetization rests on an issuable opinion and contractual risk allocation.

MACR Threshold by Beginning-of-Construction Year

The facility passes only if its MACR (non-PFE share of direct cost) meets or exceeds the threshold for the year construction begins. Thresholds tighten 5 points per year.

BOC yearSolar facility (QF)Energy storage (EST)
202640%55%
202745%60%
202850%65%
202955%70%
2030 +60%75%

Storage carries the steeper schedule, a material planning point if the development pairs solar with batteries. The full year-by-year schedule is set by §7701(a)(52)(B): qualified facilities at 40 / 45 / 50 / 55 / 60% and ESTs at 55 / 60 / 65 / 70 / 75% for construction beginning in 2026 through 2030 and later. Notice 2026-15 applies the 2026 EST anchor (55%) in its worked example.

Keyed Analysis

Each item corresponds to the like-numbered node above.

1

Credit Pathway: §48E vs. Legacy §45/§48

OBBBA Pub. L. 119-21; IRC §48E

The PFE/FEOC regime added by OBBBA reaches six credits but applies in full force only to the tech-neutral clean-electricity credits (§§ 45Y, 48E) and the §45X manufacturing credit. Legacy credits under former §45/§48 — available where construction began for tax purposes by the end of 2024 — carry no PFE restriction at all. A post-2024 facility claiming the §48E ITC is subject to the regime; no legacy exception applies.

Two failure modes should be kept distinct: the taxpayer-level bar (the claimant cannot be a PFE; Step 2) and the facility-level bar (no material assistance from a PFE; Steps 4–6). The issue presented by Chinese-produced modules is the second, not the first.

2

Taxpayer-Level PFE Test — SFE and FIE Defined

IRC §7701(a)(51)

A Prohibited Foreign Entity (PFE) is either a Specified Foreign Entity or a Foreign-Influenced Entity. A PFE cannot claim the credit, and under §6418 the credit cannot be transferred to a Specified Foreign Entity.

  • Specified Foreign Entity (SFE) — five mechanical categories: a statutory foreign entity of concern; a Chinese military company; a listed Uyghur-sanctions entity; a listed prohibited battery entity; and a “foreign-controlled entity” (a covered-nation government, or an entity that is a citizen of, incorporated in, or controlled by a covered nation — China, Russia, North Korea, Iran).
  • Foreign-Influenced Entity (FIE) — formal control: an SFE can appoint a covered officer; a single SFE owns ≥25%; SFEs together own ≥40%; or ≥15% of the entity’s debt is held by SFEs.
  • FIE — effective control: a payment to an SFE under an arrangement giving the SFE control over the facility, storage, or production (see Step 6).

A domestically owned developer selling to a U.S. purchaser ordinarily satisfies this step. It must still be confirmed for both the owner and the credit purchaser, because the §6418 transfer bar runs to the transferee as well.

3

Beginning of Construction — the 2026 Cutoff

IRC §7701(a)(51)(J); Notices 2013-29 & 2018-59

The facility-level material-assistance test applies only to a §48E facility whose construction begins after December 31, 2025. BOC is determined under rules similar to Notices 2013-29 and 2018-59 as in effect January 1, 2025 — i.e., the physical-work test (physical work of a significant nature) or the 5% safe harbor (paying or incurring 5% of total cost), with continuous progress thereafter.

Key fact A PSA and a long pre-2026 control period do not establish BOC. Where first construction contracts are only signed in 2026 and neither the physical-work test nor the 5% safe harbor is met until after January 1, 2026, the material-assistance test applies. The Chinese-produced modules are in scope, and the pre-June-16-2025 binding-contract exclusion (which also requires pre-August-1-2025 BOC) is unavailable.
Distinction Notice 2025-42 narrowed BOC for the wind/solar credit-termination (placed-in-service) deadline. By its own terms it does not govern BOC for the PFE rules; the two BOC analyses are separate. (Notice 2025-42 was vacated by a federal court in June 2026 and is under litigation; that proceeding does not affect the separate PFE BOC standard described here.)
4

Material Assistance and the MACR

IRC §7701(a)(52)(A),(B),(D)

A facility “includes material assistance from a PFE” if its material assistance cost ratio is below the threshold for the BOC year. The MACR measures the share of direct cost not attributable to PFE-produced products and components:

MACR = ( Total direct costs − Direct costs of MPs/components mined, produced, or manufactured by a PFE ) ÷ Total direct costs

For a qualified facility or storage technology, direct costs include labor and materials; for §45X eligible components the ratio uses materials only. Illustration: if total direct cost is $100 and $20 is PFE-produced, the MACR is 80%. The test is applied per facility, and a ratio below the threshold by any amount denies the entire credit for that facility.

The test looks to who produced the component, not who sold it; an American reseller of Chinese-made modules does not change their PFE-produced status. Thresholds: a solar facility beginning construction in 2026 requires ≥40%; storage requires ≥55% (see the reference table).

5

Calculating the MACR — Methods and Safe Harbors

Notice 2026-15 §§3–4 (controlling interim guidance)

Notice 2026-15 (issued Feb. 12, 2026) is the operative guidance. It allows three approaches:

  • Direct-cost method — actual direct costs, no safe harbor.
  • Identification Safe Harbor — direct-cost method using the Notice’s identification rules.
  • Cost-Percentage Safe Harbor — apply the assigned cost percentages from the Notice 2025-08 domestic-content tables, with a binary PFE / non-PFE determination per listed item (mixed-source items weighted pro rata).

Two mechanics matter for a rooftop or onsite solar installation: a 10% de minimis rule lets same-type products be assigned across facilities placed in service in the same year without facility-specific tracking when under 10% of direct cost; and qualified interconnection property must independently satisfy the rules (and cannot use the Identification or Cost-Percentage safe harbors), but its failure disqualifies only the interconnection property, not the facility.

Observation Because the threshold is measured against total direct cost — inverters, racking, labor, balance-of-system — some configurations meet the 40% threshold even with Chinese-produced modules. Whether a facility does so is a question answerable from the bill of materials and should be calculated before the credit is treated as unavailable.
Reliance window Taxpayers may rely on Notice 2026-15 for §45Y/48E facilities beginning construction after 12/31/2025, until 60 days after proposed regulations (or successor safe-harbor tables) publish. Statutory safe-harbor tables are due by December 31, 2026. Confirm nothing has superseded the Notice before filing.
6

Effective Control and Intellectual Property Licensing

IRC §7701(a)(51)(D)(ii); Notice 2026-15 §5

Independent of the MACR, the owner becomes a Foreign-Influenced Entity — and the facility loses the credit — if, in the prior year, it made a payment to an SFE under an arrangement giving the SFE effective control. Pending Treasury guidance, effective control includes an SFE’s unrestricted contractual right to dictate production quantity or timing, who may buy the output, access to the site or data, or exclusive O&M.

For IP licenses specifically, effective control is presumed where the foreign counterparty retains rights to: specify component sources; direct operations; limit the licensee’s use of the IP; receive royalties beyond year 10; require services longer than two years; withhold the technical know-how needed to produce without the counterparty; or where the agreement was entered into or modified on/after July 4, 2025. Notice 2026-15 signals Treasury will treat a post-7/4/2025 IP-license payment to an SFE as conferring effective control.

Diligence item If the U.S. module manufacturer licenses cell or module technology from a Chinese affiliate, that license — not the panels' origin — may itself be the reason an opinion is being withheld. Any such arrangement should be reviewed for the listed effective-control terms and for whether it was entered into or modified on or after July 4, 2025.
7

Substantiation, Certifications, and Penalties

Notice 2026-15 (Certification Safe Harbor); IRC §§6695B, 6662, 6501

A taxpayer may rely on a supplier’s certification that a product or component was not produced by a PFE, in lieu of its own determination, absent knowledge or reason to know to the contrary (§7701(a)(52)(D)(iii)). Under the Notice, the certification must come from the supplier the taxpayer purchased from; state that the property was not PFE-produced and that the supplier does not know (or have reason to know) of any PFE in the prior production chain; include the supplier’s EIN (or foreign equivalent); be signed under penalties of perjury; and be retained by both parties for at least six years. PFE status is determined at the producer level; a reseller’s certification as to its own status does not suffice.

  • Six-year assessment period (§6501(o)). A deficiency attributable to an error in the §7701(a)(52) determination may be assessed within six years; MACR documentation should be retained accordingly.
  • §6662(m) accuracy penalty. The 20% accuracy-related penalty applies; for a disallowance of a §45X/45Y/48E credit by reason of overstating the MACR, the substantial-understatement threshold is reduced to the greater of 1% of the required tax or $5,000 (from the usual 10%).
  • §6695B supplier penalty. Where a supplier knowingly (or with reason to know) provides a false certification that causes credit disallowance and an understatement exceeding the lesser of 5% of the required tax or $100,000, the penalty is the greater of 10% of the underpayment attributable to the falsity or $5,000 — subject to a reasonable-cause exception (§6695B(c)) and a six-year assessment period (§6696(d)(1)). Applies to certifications provided after December 31, 2025.

The penalty architecture is part of why opining counsel and suppliers are cautious: liability can attach to both the taxpayer and the certifying supplier.

8

Ongoing FEOC Recapture

IRC §48E (OBBBA recapture amendment)

OBBBA added a FEOC-specific recapture for the §48E credit: a payment to a PFE made after the facility is placed in service, within a 10-year period, triggers 100% recapture — broader and longer than the ordinary five-year ITC vesting recapture. This reaches post-closing arrangements (O&M, licensing, service contracts) with any PFE. For calendar-year taxpayers the recapture rule first applies to credit years beginning in 2028; the monitoring obligation is forward-looking and should be addressed in drafting now.

Drafting consequence Operating agreements, O&M contracts, and any licensing tied to the array should carry covenants prohibiting payments that would expose the credit to FEOC recapture for the full 10-year tail, with indemnity backstops. This is a live issue for the credit purchaser's underwriting even if the MACR passes at placed-in-service.
9

Unavailability of a Credit Opinion — Identifying the Basis

deal-level; market practice

The immediate issue is that the credit purchaser’s counsel will not opine on the solar credit. This is not a single issue but three, and the appropriate response differs by category. Major firms have generally become able to analyze PFE status, so a blanket refusal warrants identifying which of the following is the operative basis.

  • (a) The MACR fails. If Chinese-produced modules place the facility below the 40% threshold and the shortfall cannot be cured, no opinion can establish eligibility. Resolution: procurement — shift sufficient module, inverter, racking, and labor cost to non-PFE sources to meet the threshold. The calculation should be performed before the credit is treated as unavailable.
  • (b) The producer’s entity status is uncertain. Even a U.S. manufacturer must satisfy the SFE/FIE tests independently of panel origin — Chinese ownership, board-appointment rights, qualifying debt, or an effective-control IP license (Step 6). Resolution: targeted diligence on the manufacturer’s ownership, debt, and licensing arrangements.
  • (c) Firm policy. Some firms will not issue a “should” or even “more likely than not” opinion on any FEOC-exposed 2026 facility while the PFE definition remains unresolved — Notice 2026-15 expressly left it open. Resolution: the standard monetization measures — producer-level certifications, sponsor representations and warranties, and a strict indemnity backed by a creditworthy seller or parent guarantee. Tax-credit insurance is not presently a backstop for this risk (see Step 10).

Separately confirm the monetization structure: a §6418 transfer and a tax-equity partnership fail differently. A partnership flip structure does not cure a MACR shortfall — the facility-level bar applies regardless of who owns the credit — so structure cannot substitute for either a sufficient ratio or contractual risk allocation.

10

Is This Risk Insurable?

tax-insurance market, 2Q 2026; deal-level

Short answer: generally no. As of the second quarter of 2026, the tax-credit insurance market is not, as a general matter, covering the §48E PFE / FEOC risk. The reasons reported by leading underwriters and tax-insurance counsel are structural:

  • Binary, total-loss exposure. PFE is a threshold question — a facility is in or out — so a failure is a total loss rather than the partial loss tax insurers are accustomed to pricing. That alone makes it a difficult underwriting risk.
  • Coverage is gated on a strong opinion the deal does not have. Underwriters will engage only on the strength of developer’s-counsel work product: a should-level opinion (or at minimum a strong more-likely-than-not) that lays out the facts, supply chain, and equipment and concludes the project qualifies. Insurers report they have not yet seen work product of sufficient strength — a chicken-and-egg problem. Where no such opinion is available (Step 9), the precondition for any coverage is absent.
  • Change-in-law risk aggregates. A qualification call is project-specific, but if the forthcoming PFE guidance lands adversely it could impair every policy at once — a single correlated loss. Some underwriters will therefore write no PFE policy until the guidance is finalized.

The market exception is narrow: for very clean fact patterns supported by strong work product, limited material-assistance coverage has reportedly been underwritten since Notice 2026-15, while effective-control and foreign-influence coverage generally remains unavailable. Each still depends on the underlying opinion.

Consequence — allocate by contract, not insurance As a Holland & Knight practitioner observed to Crux, the ordinary risk-allocation playbook does not work "because we cannot get insurance." The market is instead relying on strict FEOC legal representations and a strict indemnity — frequently uncapped — backed by a creditworthy seller or parent guarantee, with residual risk reflected in pricing adjustments rather than holdbacks or escrows. Insurability follows the opinion, not the reverse: if the project can be brought to a should-level conclusion (procurement to clear the MACR and clean entity/control diligence), coverage may open up; until then, plan on representations-and-indemnity allocation.
  1. Determine the expected BOC date and method, and confirm whether it falls after 1/1/2026; this sets the threshold and confirms whether the test applies.
  2. Obtain the solar (and storage) bill of materials with direct costs by item, and run the MACR under each Notice 2026-15 method to determine whether the 40% (solar) / 55% (storage) threshold can be met as currently specified.
  3. Diligence the module manufacturer's entity status — ownership, debt, covered-officer rights — and review any technology-licensing agreement for effective-control terms and the 7/4/2025 date trigger.
  4. Put the precise question to the credit purchaser's counsel: is the issue the MACR calculation, the producer's entity status, or a policy against opining on FEOC-exposed facilities? The answer determines whether the appropriate response is procurement, diligence, or contractual risk allocation.
  5. Confirm the monetization mechanism (§6418 transfer vs. tax-equity partnership) and scope FEOC/recapture covenants and indemnities for the 10-year tail.
  6. Do not assume tax-credit insurance will backstop the FEOC risk; as of 2Q 2026 the market is generally not covering it, and any coverage is gated on a strong counsel opinion (Step 10). Plan on strict FEOC representations and a strict indemnity backed by a creditworthy seller or parent guarantee, with residual risk priced rather than escrowed.

Glossary

  • Beginning of construction (BOC). The date a project starts construction for tax purposes — the physical-work test or the 5% safe harbor — determined for PFE purposes under rules similar to Notices 2013-29 and 2018-59 as in effect January 1, 2025. §7701(a)(51)(J), (52)(F).
  • Certification Safe Harbor. Reliance on a compliant supplier certification that a product or component was not produced or manufactured by a PFE, in lieu of the taxpayer’s own determination. §7701(a)(52)(D)(iii)(II)(bb); Notice 2026-15.
  • Cost-Percentage Safe Harbor. A MACR method that assigns the cost percentages in the Notice 2025-08 domestic-content tables to listed items, with a binary PFE / non-PFE determination per item. Notice 2026-15 §4.02.
  • Covered nation. China, Russia, North Korea, and Iran — the nations whose connection triggers SFE status.
  • Effective control. Contractual rights of an SFE counterparty over production, output, data or site access, or O&M of a facility/EST/component, including specified IP-licensing terms (e.g., royalties beyond year 10, services beyond two years, or an agreement entered or modified on/after July 4, 2025). §7701(a)(51)(D)(ii).
  • Eligible component (EC). A solar or wind energy component, inverter, qualifying battery component, or applicable critical mineral; the §45X subject property. §45X(c)(1); §7701(a)(52)(E)(i).
  • Energy storage technology (EST). Property that receives, stores, and delivers energy for conversion to electricity (and thermal storage), as defined by reference to §48(c)(6). §48E(c)(2).
  • Foreign entity of concern (FEOC). The antecedent statutory concept (IIJA / NDAA). The OBBBA regime is colloquially called “FEOC,” but the operative Code term is “prohibited foreign entity.”
  • Foreign-influenced entity (FIE). An entity under formal control or effective control of an SFE; one of the two components of a PFE. §7701(a)(51)(D).
  • Formal control. An SFE’s right to appoint a covered officer, ownership of ≥25% (single SFE) or ≥40% (aggregate) of the entity, or holding of ≥15% of the entity’s debt. §7701(a)(51)(D)(i)(I).
  • Identification Safe Harbor. A method permitting use of the 2023–2025 safe-harbor tables to identify the MPs and MPCs in a listed qualified facility or EST. Notice 2026-15 §4.01.
  • Manufactured product / component (MP / MPC). A manufactured product that is a component of a qualified facility, and the articles or materials incorporated into such a product. §7701(a)(52)(E)(iii); Notice 2023-38.
  • Material assistance. Sourcing of products or components from a PFE such that the MACR falls below the applicable threshold percentage. §7701(a)(52)(A).
  • Material assistance cost ratio (MACR). (Total direct costs − direct costs of PFE-produced products/components) ÷ Total direct costs, computed per facility. §7701(a)(52)(D).
  • OBBBA. The One Big Beautiful Bill Act, Pub. L. No. 119-21 (July 4, 2025), which added the PFE regime to the clean-energy credits.
  • Prohibited foreign entity (PFE). A specified foreign entity or a foreign-influenced entity. §7701(a)(51)(A).
  • Qualified facility (QF). A zero-emissions electricity-generating facility placed in service after December 31, 2024. §45Y(b)(1); §48E(b)(3); §7701(a)(52)(E)(iv).
  • Qualified interconnection property. Interconnection additions for a facility with net output ≤5 MW (AC); must satisfy the material-assistance rules independently, though its failure does not disqualify the facility. §48E(b)(4); Notice 2026-15.
  • Recapture (FEOC). For §48E, a payment to a PFE within the 10-year period after placed-in-service triggers 100% recapture — distinct from ordinary ITC vesting recapture.
  • Section 45X. Advanced Manufacturing Production Credit, for producing eligible components.
  • Section 45Y. Clean Electricity Production Credit (PTC); shares the PFE / material-assistance rules with §48E.
  • Section 48E. Clean Electricity Investment Credit (ITC); the credit at issue for a project’s solar (and any storage).
  • Section 6418 transfer. An election to transfer (sell) an eligible credit to an unrelated party; transfer to a specified foreign entity is prohibited.
  • Specified foreign entity (SFE). One of five statutory categories tied to covered nations or U.S. designation lists; one of the two components of a PFE. §7701(a)(51)(B)–(C).
  • Threshold percentage. The minimum MACR for eligibility, set by the year construction begins (40% for a 2026 solar facility; 55% for 2026 storage). §7701(a)(52)(B).

Citations

Primary authority

  • One Big Beautiful Bill Act, Pub. L. No. 119-21 (July 4, 2025) (adding the prohibited-foreign-entity regime to the clean-energy credits).
  • I.R.C. § 48E (Clean Electricity Investment Credit); § 45Y (Clean Electricity Production Credit); § 45X (Advanced Manufacturing Production Credit); §§ 45Q, 45U, 45Z (entity-level PFE bar only).
  • I.R.C. § 7701(a)(51) (prohibited foreign entity; specified and foreign-influenced entities; effective control; beginning of construction).
  • I.R.C. § 7701(a)(52) (material assistance; material assistance cost ratio; threshold percentages at (B)(i)–(ii); calculation at (D); binding-contract exception at (D)(iv)).
  • I.R.C. § 6418 (transfer of credits; transfer to a specified foreign entity prohibited); § 50 (recapture).
  • I.R.C. § 6662(m) (accuracy-related penalty; 1% substantial-understatement threshold for energy-credit disallowance); § 6501(o) (six-year assessment period); § 6695B and § 6696(d)(1) (supplier-certification penalty and assessment); § 6417(d)(6)(D) (elective payment).

Administrative guidance

  • IRS Notice 2026-15 (Feb. 12, 2026) — interim guidance on material assistance, the MACR, and safe harbors (controlling).
  • IRS Notice 2025-08, 2025-8 I.R.B. 800 (domestic-content assigned-cost tables, relied upon for the Cost-Percentage Safe Harbor).
  • IRS Notice 2025-42 (Aug. 15, 2025) (BOC for the wind/solar credit-termination deadline; inapplicable to PFE BOC; vacated by a federal court in June 2026 and under litigation).
  • IRS Notice 2024-41, 2024-24 I.R.B. 1615; Notice 2023-38, 2023-22 I.R.B. 872 (domestic-content safe harbor and component classification).
  • IRS Notice 2013-29, 2013-20 I.R.B. 1085; Notice 2018-59, 2018-28 I.R.B. 196 (beginning of construction).
  • Exec. Order No. 14315, 90 Fed. Reg. 31,963 (July 10, 2025) (directing stringent FEOC implementation).

Secondary commentary

  • K&L Gates, Understanding the New Prohibited Foreign Entity Rules for Clean Energy Tax Credits (Sept. 18, 2025). klgates.com
  • Norton Rose Fulbright (projectfinance.law), New FEOC Guidance: Notice 2026-15 (Apr. 9, 2026). projectfinance.law
  • Bracewell LLP, Treasury and IRS Issue Guidance on Foreign Entity of Concern Rules (Apr. 2026). bracewell.com
  • A&O Shearman, IRS Publishes Guidance for Determining Material Assistance (Apr. 2026). aoshearman.com
  • McGuireWoods LLP, IRS Releases Initial FEOC Guidance (Mar. 2026). mcguirewoods.com
  • Novogradac, RETC Finance Series: FEOC Deep Dive (podcast, Oct. 21, 2025). novoco.com
  • Crux Climate, Prohibited Foreign Entities: How the Market Is Navigating Compliance Amid Evolving Regulations (May 12, 2026) (2Q 2026 practitioner interviews; source for the insurability analysis in Step 10). cruxclimate.com

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This article is provided for general informational and educational purposes only. It is not legal advice, and reading it does not create an attorney-client relationship between you and KraftNeeld LLC or any of its attorneys. I am not your lawyer. The law changes, statutes get amended, and courts issue new opinions; the citations and rules summarized in this article may not be current by the time you read them. Do not act, or refrain from acting, on the basis of anything in this article without first conducting your own research and consulting a licensed attorney in your jurisdiction who can evaluate the specific facts of your situation.