Introduction
Investment Tax Credit (ITC) eligibility for battery storage now hinges on how effectively your supply chain avoids Foreign Entities of Concern (FEOCs).
The landscape of clean energy investment in the United States is changing fast, driven by the intersection of FEOC regulations and the ITC. These requirements directly determine whether projects qualify for federal incentives.
If your system includes components tied to foreign-controlled entities, you risk losing access to the tax credits that make your project financially viable.
Recent Treasury and IRS guidance has transformed FEOC compliance into a defined, auditable framework. Developers must now calculate, document, and validate supply chain exposure to Prohibited Foreign Entities (PFEs) to maintain eligibility. This is not a future consideration. It is a current requirement tied to both qualification and monetization of the ITC.
FEOC compliance is now a defined and enforceable requirement that directly determines ITC eligibility. The good news is that with the right strategy and the right partner, compliance is achievable. EticaAG is one of them.
What Are Foreign Entities of Concern (FEOCs)?
The U.S. government has drawn a clear line. That line is FEOC status. If your supplier or partner crosses it, your project can lose eligibility for federal tax incentives.
FEOCs are companies that are owned, controlled, or significantly influenced by foreign adversaries, including governments or organizations from countries like China, Russia, Iran, or North Korea. These rules exist to protect national security, eliminate reliance on hostile supply chains, and accelerate domestic manufacturing.
FEOC determinations can also be triggered through indirect influence, including licensing agreements, joint ventures, and contractual control structures.
There are two primary categories:
- Specified Foreign Entities (SFEs): Directly owned or controlled by a foreign government deemed hostile
- Foreign-Influenced Entities (FIEs): Influenced through governance, financing, or intellectual property arrangements
Why This Matters for BESS
The battery industry is global. Many leading cell manufacturers, module suppliers, and component providers operate within FEOC-linked ecosystems. Companies like CATL, BYD, or Gotion can trigger restrictions depending on ownership, influence, or supply chain structure.
Even limited exposure matters. A small number of FEOC-linked components can reduce your project’s compliant cost ratio enough to disqualify your project from ITC eligibility.
How FEOC Rules Affect BESS Projects
The Department of Energy and the Treasury are not simply encouraging developers to avoid FEOCs. They have established measurable requirements that define compliance.
Material Assistance Rule
Under this rule, a project cannot receive material assistance from Prohibited Foreign Entities.
This is now evaluated through cost attribution. Eligibility depends on the percentage of total system cost linked to PFEs, not just the presence of a specific component. A project can fail eligibility even if only part of the system is non-compliant.
Material Assistance Cost Ratio (MACR) Thresholds
To qualify for the ITC beginning in 2026, BESS projects must meet minimum non-FEOC content thresholds under MACR requirements, alongside separate domestic content thresholds for bonus eligibility.
| Year | Minimum FEOC-Free Content (MACR) | Domestic Content Requirement* |
|---|---|---|
| 2026 | 55% | 40% |
| 2027 | 60% | 45% |
| 2028 | 65% | 50% |
| 2029 | 70% | 55% |
| 2030 | 75% | 55%+ |
These thresholds define the required share of project cost that must be free of FEOC involvement, while domestic content thresholds determine eligibility for additional ITC bonus credits.
Developers must calculate MACR using defined Treasury methodologies that identify system components, assign direct costs, and determine exposure to Prohibited Foreign Entities (PFEs). This calculation must be supported by verifiable cost data and supplier documentation.
At a high level, the Material Assistance Cost Ratio is calculated as:
MACR = (Cost of non-FEOC components ÷ Total project cost) × 100
To remain eligible, this percentage must meet or exceed the required threshold for the applicable project year.
Treasury guidance also introduces safe harbor frameworks that allow developers to rely on standardized cost assumptions and supplier certifications when calculating MACR.
High-Risk Areas in the BESS Supply Chain
Certain components in the battery storage supply chain carry significantly higher FEOC exposure risk and require close scrutiny:
- Lithium, cobalt, and graphite sourcing: These materials are often mined or processed in regions dominated by FEOC-linked companies, particularly China. Even when mined elsewhere, refining stages frequently introduce compliance risk.
- Battery cells and modules: Many leading manufacturers operate under ownership or influence tied to foreign entities of concern. These components represent a large share of system cost, making them a primary compliance driver.
- Battery Management Systems (BMS): Microelectronics, firmware, and control systems may originate from FEOC-linked suppliers. Because the BMS governs system operation, its origin is critical.
- Inverters and control systems: Energy management systems and inverters can introduce compliance risk through hardware sourcing or embedded software dependencies.
Understanding and documenting these areas is essential for MACR validation. Even when Tier 1 suppliers appear compliant, upstream Tier 2 and Tier 3 suppliers often introduce hidden exposure.
Developers must evaluate the full supply chain, not just direct vendors.
Understanding the Investment Tax Credit
The Investment Tax Credit remains one of the most powerful incentives driving clean energy deployment in the United States. It allows developers to offset a portion of system cost against federal tax liability.
What Does This Mean for BESS?
Standalone battery energy storage systems qualify under Section 48E, even when not paired with solar generation.
- Base ITC value: 30%
- Bonus adders: These can significantly increase your credit value.
- +10% for Domestic Content: Requires U.S.-sourced steel, iron, and manufactured products. Domestic content compliance is separate from FEOC compliance, and both must be satisfied
- +10% for Energy Communities: Granted if the project is located in a qualified energy community, such as areas with coal plant closures, fossil fuel job losses, or brownfield sites.
- +10% for Low-Income Communities: For projects sited in federally designated low-income census tracts.
- +20% for Low-Income Residential Buildings or Economic Benefit Projects: For BESS serving multi-family affordable housing or delivering at least 50% of energy benefits to low-income households.
Projects must satisfy domestic content requirements and FEOC compliance independently to maximize total ITC value.
Additional monetization pathways, including ITC transferability (Section 6418) and direct pay (Section 6417), make compliance even more critical. These mechanisms allow developers and tax-exempt entities to fully capture project value, but only if eligibility is maintained.
When combined, total incentives can exceed 50% of project cost.
Compliance Requirements
To claim and retain the ITC, BESS projects must:
- Meet labor standards: Including prevailing wage and apprenticeship requirements
- Use U.S. or FTA country components: Genuine sourcing, not just domestic assembly
- Minimize FEOC involvement: Stay within allowable thresholds tied to PFEs
- Meet MACR thresholds: Demonstrate compliant cost allocation
- Maintain compliance for 10 years: Subject to IRS recapture
- Maintain supplier certifications and cost documentation: Support MACR validation and audit readiness
Failure to meet any of these requirements can result in partial or full loss of the credit, including post-installation recapture.
EticaAG’s Path to a Fully Compliant BESS Solutions
EticaAG delivers battery storage systems engineered to meet the realities of today’s regulatory environment.
FEOC-Free Sourcing
EticaAG systems are engineered to align with U.S. compliance standards. Supplier relationships, contractual structures, and intellectual property frameworks are structured to avoid involvement with Prohibited Foreign Entities.
MACR Compliance
EticaAG BESS solutions are designed to meet MACR thresholds using defined cost allocation methodologies aligned with Treasury guidance, aligning with the increasing non-FEOC content requirements through 2030. This is supported by:
- Transparent supply chain
- Supplier attestations and documentation
- Audit-ready system design
Domestic Manufacturing Plans
Current production is based in non-FEOC Taiwan, with U.S. manufacturing coming online in Q1 2027 to support domestic content qualification.
Safety and Longevity
EticaAG engineers battery storage systems that deliver safety, uptime, and long-term durability at scale.
- LiquidShield immersion cooling: Significantly reduces the occurrence of thermal runaway through advanced thermal management, effectively eliminating fire risk and extending battery life by ~20%
- HazGuard system: Neutralizes toxic emissions, especially in enclosed or high-occupancy settings
Compliance Checklist for BESS Developers
To stay aligned with ITC and FEOC requirements, developers should:
- Audit suppliers for FEOC exposure (ownership, control, component origin)
- Secure certifications confirming FEOC-free sourcing and cost breakdowns
- Calculate your MACR and validate it against the latest IRS thresholds
- Use safe harbors where possible by locking in eligible contracts early
- Track your project timelines to align with ITC eligibility windows
- Maintain documentation throughout the 10-year compliance period
- Partner with EticaAG to avoid the risks and streamline compliance
Conclusion
We are operating in a new reality for clean energy development. Compliance is no longer secondary to performance. It determines whether projects move forward at all.
Battery storage systems must now meet strict sourcing thresholds, document supply chain exposure, and align with evolving tax regulations to qualify for federal incentives. Developers who fail to meet these requirements risk losing not only tax credits, but access to financing and overall project viability.
EticaAG is built for this environment.
LiquidShield immersion cooling technology enhances battery safety and longevity by preventing thermal events, while HazGuard adds another layer of protection by neutralizing hazardous gases. Combined with a compliance-driven supply chain and U.S. manufacturing strategy, EticaAG enables developers to maximize ITC eligibility and deploy resilient, future-ready energy storage systems.
Ready to future-proof your BESS investment?
Start auditing your supply chain, align your procurement strategy with compliance requirements, and connect with EticaAG to deploy systems built for today’s regulatory landscape.
