Compliance
Avoiding Energy Credit Disqualification: Navigating Prohibited Foreign Entity Rules
Energy credits under OBBB now include strict PFE restrictions — understand material assistance ratios, safe harbors, and the timing of your project to preserve credits.
By NomadicTax Research Team • 5-8 min read • March 16, 2026
## New PFE Restrictions in Energy-Related Credits
The One, Big, Beautiful Bill added provisions that **disqualify claims for many energy tax credits** if the taxpayer, project, or components receive “material assistance” from a **Prohibited Foreign Entity (PFE)**. Key affected credits include:
- Clean electricity production credits under § 45Y
- Investment tax credits under § 48E
- Advanced manufacturing credits under § 45X ([irs.gov](https://www.irs.gov/newsroom/treasury-irs-provide-guidance-for-certain-energy-tax-credits-regarding-material-assistance-provided-by-prohibited-foreign-entities-under-the-one-big-beautiful-bill?utm_source=openai))
## What counts as PFE and material assistance?
- A **PFE** is defined by law (section 7701(a)(52))—entities that are from certain foreign countries or under control or influence. Details are complex, and interim guidance helps define application. ([irs.gov](https://www.irs.gov/pub/irs-drop/n-26-15.pdf?utm_source=openai))
- The **Material Assistance Cost Ratio (MACR)** compares the cost of materials or services from PFEs relative to overall cost. If the MACR exceeds certain thresholds, the credit may be disallowed. Interim safe-harbor MACR tables are provided until final rules are issued. ([irs.gov](https://www.irs.gov/pub/irs-drop/n-26-15.pdf?utm_source=openai))
## Timing matters: Construction and usage dates
- For § 45Y / § 48E qualified facility or energy storage tech construction beginning **after December 31, 2025**, the interim rules attach. Taxpayers may rely on the safe-harbors until 60 days after the final safe-harbor tables are published. ([irs.gov](https://www.irs.gov/newsroom/treasury-irs-provide-guidance-for-certain-energy-tax-credits-regarding-material-assistance-provided-by-prohibited-foreign-entities-under-the-one-big-beautiful-bill?utm_source=openai))
- For § 45X eligible components sold in taxable years beginning after **July 4, 2025**, similar rules apply. ([irs.gov](https://www.irs.gov/newsroom/treasury-irs-provide-guidance-for-certain-energy-tax-credits-regarding-material-assistance-provided-by-prohibited-foreign-entities-under-the-one-big-beautiful-bill?utm_source=openai))
## Safe harbor rules and examples
- Example: A solar facility begins construction AftDec 31, 2025; 10% of material cost is sourced from a PFE. Safe-harbor MACR threshold (interim) may allow this usage. If instead 60% cost from PFEs, credit could be lost under interim guidance.
- If eligible component is sold by a company where component manufacture is partly sourced abroad—cost allocation and sourcing records become critical.
## Actionable steps for compliance
- Map all suppliers and inputs for your project—identify any entities that could be PFEs, and trace where materials and services come from.
- Compute projected MACRs under interim safe harbor tables; adjust sourcing if needed to stay below disqualification thresholds.
- Ensure contracts, supply agreements clearly specify origin, manufacturing, and whether any assistance or part comes from PFEs.
- Monitor forthcoming proposed and final regulations; keep an eye on IRS resource guides and file comments if relevant.