Clean Energy Credits After OBBBA: Section 45Y, 48E, Transferability, and Direct Pay Guide

This guide is written for enrolled agents, CPAs, and tax attorneys advising clients on clean energy project financing, credit monetization, and the compliance implications of OBBBA (the One Big Beautiful Bill Act, signed July 4, 2025) for Section 45Y, Section 48E, IRC 6418 transferability, and IRC 6417 direct pay. As of July 2026, the construction-start deadline has already passed; the advisory work now centers on grandfathering determinations, surviving monetization structures, and monitoring pending FEOC regulations.

All statutory citations, IRS guidance references, credit rates, deadlines, and regulatory requirements in this guide must be verified against the enacted text of OBBBA, the Internal Revenue Code, current IRS.gov guidance, and applicable Treasury regulations before being relied on in any specific client matter. Tax law is subject to legislative change and ongoing regulatory development. This guide is for informational purposes only and does not constitute legal or tax advice. Clean energy credit transactions are complex and fact-specific; practitioners should review current guidance at IRS.gov before advising.

Section 1: Where Things Stand After OBBBA (July 2026)

The Inflation Reduction Act (IRA, 2022) built a comprehensive clean energy tax credit framework around three structural pillars: technology-neutral credits (Section 45Y and 48E), credit transferability for cash consideration (IRC 6418), and direct pay for entities without tax liability (IRC 6417). That framework remains largely intact. OBBBA did not dismantle the IRA's clean energy credit architecture; it narrowed the on-ramp for future new-build projects.

OBBBA (signed July 4, 2025) established a construction-start deadline of July 4, 2026 (the OBBBA enactment date, one year after signing) for projects that will be placed in service after December 31, 2027. Projects that began construction on or before that date remain grandfathered under the IRA framework without a terminal placed-in-service date. Projects that began construction after July 4, 2026 must be placed in service by December 31, 2027 to qualify for Section 45Y or 48E credits. As of July 2026, that construction-start deadline has already passed.

The advisory work now is entirely about three things: (a) identifying which projects are grandfathered based on their construction-start date; (b) structuring credit monetization under the surviving transferability and direct pay rules; and (c) monitoring pending FEOC regulations that could affect credit eligibility and transferability for projects with foreign supply chain exposure.

States may not conform to the IRA clean energy credit framework or to OBBBA's modifications. State tax treatment of transferability proceeds, direct pay receipts, and energy credit bonus amounts varies significantly. Before advising on state tax consequences, review the applicable state's conformity position. See the State OBBBA Conformity Practitioner Guide for a survey of state conformity issues.

OBBBA's clean energy credit modifications interact with other major capital expenditure provisions also changed by OBBBA. For project finance clients, the interaction between clean energy credit eligibility and the IRC 163(j) business interest limitation (which OBBBA also modified, including the ATI restoration) is a significant planning consideration. See the IRC 163(j) Business Interest Limitation OBBBA Practitioner Guide for the 163(j) ATI restoration analysis.

Section 2: Section 45Y and Section 48E -- What They Are and Who They Help

Section 45Y and Section 48E are the IRA's technology-neutral replacements for the prior Section 45 renewable electricity production tax credit and Section 48 investment tax credit. They apply to facilities placed in service after December 31, 2024 (with applicable transition rules). Both credits are technology-neutral by design: any facility that generates zero-emission electricity qualifies, rather than requiring a separate statutory credit for each generation technology. Wind, solar, geothermal, nuclear, and other zero-emission electricity technologies all qualify under this framework.

Section 45Y: Clean Electricity Production Tax Credit

Section 45Y provides a per-kilowatt-hour credit for electricity produced from a qualifying clean electricity facility (defined as a facility with a greenhouse gas emissions rate of not greater than zero) and sold to an unrelated party. The credit runs for a 10-year period from the date the facility is placed in service.

The base credit rate and the enhanced rate (available to facilities that satisfy prevailing wage and apprenticeship requirements under IRC 45Y(g)) are not stated in this guide; confirm current credit rates at IRS.gov and in the applicable IRS notices. Do not rely on credit rate figures from pre-OBBBA publications without verifying against current law and guidance.

Section 48E: Clean Electricity Investment Tax Credit

Section 48E provides a percentage-of-qualified-investment credit for qualifying investment in a clean electricity facility (including qualifying energy storage technology). The credit is calculated as a percentage of the qualified investment in the facility and is claimed in the year the facility is placed in service, unlike the Section 45Y production credit which accrues over 10 years based on electricity output.

The base credit percentage and the enhanced percentage (available to facilities satisfying prevailing wage and apprenticeship requirements) are not stated in this guide; confirm current credit percentages at IRS.gov and in the applicable IRS notices. The choice between Section 45Y and Section 48E, and the related election mechanics, are project-specific and depend on the facility type, financing structure, and investor profile.

Technology-Neutral Structure: Why It Matters

The technology-neutral structure of Section 45Y and 48E was designed to make credit eligibility durable: new zero-emission electricity technologies that did not exist at the time of the IRA's enactment can qualify without requiring a new act of Congress. Any facility that produces electricity with a greenhouse gas emissions rate of not greater than zero is a "clean electricity facility" for these purposes, provided the other statutory requirements are met.

This structure also means that eligibility disputes focus on whether a facility's emissions rate qualifies and on the construction-start and placed-in-service timing rules, rather than on technology classification. Practitioners advising on new technology deployments should confirm the applicable emissions rate determination procedure with current IRS guidance at IRS.gov before assuming eligibility.

Section 3: The OBBBA Phase-Out -- Two Key Dates

The OBBBA phase-out of Section 45Y and 48E operates through two distinct, independently significant dates. Practitioners must understand both dates, the relationship between them, and how they interact to determine whether a specific project is eligible for the credit.

Date 1: July 4, 2026 (Construction-Start Deadline -- Already Passed)

To claim Section 45Y or 48E credits for a project placed in service after December 31, 2027, the project must have begun construction on or before July 4, 2026. As of the date of this guide, that deadline has already passed. This means the universe of projects that can claim Section 45Y or 48E credits for property placed in service after December 31, 2027 is now fixed: only projects where construction had already begun on or before July 4, 2026 qualify under the grandfathering rule.

"Begin construction" is defined under IRS notice guidance that pre-dates OBBBA (developed in the context of the prior Section 45 and 48 credits and adopted for Section 45Y and 48E). The two primary methods are: (a) physical work of a significant nature at the project site or at a facility manufacturing components for the project; and (b) the 5% safe harbor (incurring at least 5% of the total project cost). The IRS is expected to issue construction-start guidance specific to the July 4, 2026 OBBBA date; confirm the applicable definition, methods, and safe harbors at IRS.gov and in the applicable IRS notices before advising on any specific project's begin-construction determination.

Date 2: December 31, 2027 (Placed-in-Service Terminal Date for Non-Grandfathered Projects)

For projects that did not begin construction on or before July 4, 2026, the Section 45Y and 48E credit is available only if the facility is placed in service on or before December 31, 2027. A project that began construction after July 4, 2026 and is not placed in service by December 31, 2027 is not eligible for the credit. Hedge the specific placed-in-service rules and any applicable extensions to the enacted OBBBA and current IRS.gov guidance.

The Eligibility Matrix

The following matrix summarizes the OBBBA phase-out rules as described in the enacted statute. All matrix entries are subject to the construction-start safe harbors and placed-in-service rules in current IRS guidance; confirm at IRS.gov before applying to a specific project.

Hedge all matrix entries to the enacted OBBBA and current IRS.gov guidance. The IRS is expected to issue construction-start guidance specific to the July 4, 2026 OBBBA date.

Section 4: Transferability Under IRC 6418 -- OBBBA Modifications

IRC 6418, enacted by the IRA in 2022, allows eligible taxpayers to transfer all or any portion of an eligible clean energy credit to an unrelated taxpayer (a "transfer election"). The transferee pays cash for the credit; the transfer price is negotiated between the parties and is not deductible by the transferee. OBBBA did not repeal IRC 6418; it added a significant restriction targeted at foreign entities.

The OBBBA Restriction: No Transfer to Specified Foreign Entities

The key OBBBA restriction on transferability: credits may not be transferred to a "specified foreign entity" (SFE) as defined in OBBBA. The SFE concept is related to, but not necessarily identical to, the "foreign entity of concern" (FEOC) concept. Both definitions are subject to forthcoming Treasury and IRS regulations; as of July 2026, final regulations have not been issued. Do not apply a specific definition of "specified foreign entity" or "foreign entity of concern" without confirming the current regulatory status at IRS.gov and in the enacted OBBBA text.

For transfers to U.S. taxpayers that are not specified foreign entities, transferability under IRC 6418 continues to function as enacted under the IRA. The market for clean energy credit transfers remains operational for domestic buyers. FEOC and SFE due diligence is now a standard component of transfer transaction closing conditions.

How Transferability Works (Mechanics That Survived OBBBA)

The following mechanics apply to IRC 6418 transfer elections after OBBBA:

• Who can transfer: "Eligible taxpayers" under IRC 6418 (generally, the project owner that would otherwise claim the credit) may transfer all or any portion of an eligible credit.
• Who can receive the transfer: Any U.S. taxpayer that is not a specified foreign entity (post-OBBBA restriction). The transferee uses the credit dollar-for-dollar against its own U.S. tax liability.
• Cash consideration: The transferee pays cash to the transferor. The transfer price is negotiated between the parties; there is no regulatory floor or ceiling on the transfer price. The cash received by the transferor is not included in the transferor's gross income. The cash paid by the transferee is not deductible.
• One transfer per credit: A transferred credit cannot be further transferred by the transferee. The credit can be transferred only once.
• Unrelated party requirement: The transferor and transferee must be unrelated within the meaning of the applicable IRC provisions. Related-party transfers are not permitted under IRC 6418.
• Recapture risk: The transferee bears the risk of credit recapture if the underlying facility ceases to qualify after the transfer. Practitioners structuring transfer transactions should address recapture indemnification in the transfer agreement. Hedge all recapture mechanics to IRC 6418 and current IRS.gov guidance.

Registration Requirement: IRC 6418(d) and the IRS Energy Credits Online Portal

Before a transfer election can be made, the eligible taxpayer must register the credit with the IRS through the IRS Energy Credits Online portal (available at IRS.gov). The registration process generates a registration number that must be included in the transfer election (filed on Form 3800 and the applicable credit form). A transfer election made without a valid registration number is not effective.

Confirm all registration requirements, deadlines, portal mechanics, and election procedures at IRS.gov and in the applicable IRS notices before advising on or executing any transfer election. The IRS has issued and continues to update guidance on the Energy Credits Online portal registration process; the mechanics described here may be superseded.

Foreign Tax Credit Interaction for Corporate Transferees

Corporate transferees with foreign income should be aware that clean energy credit transfers can interact with the foreign tax credit (FTC) regime, including the FTC basket allocation rules and the limitation calculation under IRC 904. Acquiring a transferred clean energy credit that offsets U.S. tax liability may affect the FTC limitation and the allocation of creditable foreign taxes across baskets. For corporate transferees navigating the intersection of transferred clean energy credits and the FTC regime, see the Foreign Tax Credit Form 1116 and Form 1118 OBBBA Practitioner Guide.

Section 5: Direct Pay Under IRC 6417 -- Who Qualifies and What Survives

IRC 6417, enacted by the IRA in 2022, allows "applicable entities" to receive the full value of eligible clean energy credits as a direct cash payment from the IRS, without needing any U.S. tax liability to absorb the credit. This mechanism (the "elective payment election" or "direct pay election") was designed specifically for entities that build and own clean energy assets but have little or no federal income tax liability: government bodies, tax-exempt organizations, and similar entities. OBBBA did not repeal IRC 6417; direct pay survives.

Who Qualifies as an Applicable Entity

Applicable entities eligible to make a direct pay election under IRC 6417 include (among others, and subject to the specific definitions and requirements in the statute and applicable IRS guidance):

• Tax-exempt organizations described in IRC 501(c), including IRC 501(c)(3) charitable organizations, labor organizations, and business leagues
• State and local governments and their instrumentalities
• Indian tribal governments
• The Tennessee Valley Authority
• Rural electric cooperatives described in IRC 501(c)(12)
• Certain other specified entities as defined in IRC 6417 and applicable IRS guidance

Hedge all applicable entity definitions and eligibility requirements to IRC 6417, the enacted OBBBA, and current IRS.gov guidance. Do not assume an entity qualifies without confirming its status against the current statutory definition and any applicable IRS guidance.

What Direct Pay Provides

An applicable entity that makes a valid direct pay election receives a cash payment from the IRS equal to the amount of the eligible credit, as if the credit were a tax overpayment. The entity does not need to have any U.S. federal income tax liability; it receives the full credit value as cash from the IRS. This makes direct pay the primary (and in most cases the only) monetization mechanism for tax-exempt and government entities investing in clean energy.

For-Profit Investors: Transferability, Not Direct Pay

For-profit entities (C corporations, partnerships, S corporations, and individuals) are not eligible to make a direct pay election under IRC 6417 for most eligible credits. For-profit investors who want to monetize clean energy credits without using them directly against their own tax liability must use transferability under IRC 6418 rather than direct pay. This distinction is fundamental to clean energy deal structuring: the same project can support both a direct pay election by a tax-exempt owner and a transferability election by a for-profit investor, depending on the ownership structure.

Election Mechanics

The direct pay election is made on the applicable entity's annual return (or, where required, a separate election form) for the tax year in which the credit is claimed. The IRS has issued guidance on the election process, the applicable forms, and the IRS portal registration requirement (similar to the registration requirement for IRC 6418 transfers). Confirm all election mechanics, filing deadlines, and IRS portal requirements at IRS.gov and in the applicable IRS notices before filing. These procedures are operational and may be updated.

Section 6: FEOC Restrictions -- Pending Final Regulations

The "foreign entity of concern" (FEOC) restriction is one of the most significant compliance risks in clean energy credit transactions as of mid-2026: the statutory framework exists, the restriction has practical effect, and final regulations have not yet been issued. Practitioners must advise clients on the risk while hedging to the current regulatory status at IRS.gov.

What the FEOC Restriction Is

The FEOC restriction limits the clean energy credit eligibility of facilities or components that use materials from, or are owned by, a "foreign entity of concern" as defined by applicable law. The FEOC definition in the clean energy credit context references the definition in the Infrastructure Investment and Jobs Act (IIJA), which primarily refers to entities connected to or controlled by China, Russia, Iran, or North Korea, as well as entities on certain U.S. government restriction lists. Hedge all FEOC definition details to the enacted statutes (IRA, OBBBA, IIJA) and current IRS.gov guidance; do not state the FEOC definition as final.

OBBBA's Extension: Specified Foreign Entities and Transferability

OBBBA expanded the FEOC-related restrictions to prohibit credit transfers to "specified foreign entities" (SFEs) under IRC 6418. The SFE concept is related to but not necessarily identical to the FEOC definition; both are subject to forthcoming Treasury and IRS regulations. As of July 2026, final regulations defining SFE and FEOC for clean energy credit purposes have not been issued. Preliminary guidance has been published but practitioners must monitor IRS.gov and Treasury for final rules before advising on any transaction that could be affected.

Impact on Clean Energy Deal Structuring

The FEOC restriction has two practical layers. First, supply chain exposure: a facility that uses components sourced from FEOC-connected suppliers may face credit eligibility risk for the portion of the credit attributable to those components. Second, transferability restriction: a transferee that is a specified foreign entity cannot receive a transferred clean energy credit under IRC 6418 post-OBBBA, regardless of the supply chain composition of the underlying facility.

Supply chain due diligence (tracing components from origin through manufacturing to the project site) is now a standard element of clean energy credit transactions, particularly for solar, wind, and battery storage projects where component supply chains have historically included FEOC-connected manufacturers. Practitioners advising on project financing must coordinate with project counsel and the project's supply chain compliance team to assess FEOC risk before closing.

All FEOC and SFE specifics, including what constitutes an FEOC-connected component, how the restriction applies to partial supply chain exposure, and what documentation satisfies due diligence requirements, must be hedged to the enacted statutes (IRA, OBBBA, IIJA), any applicable interim guidance, and current IRS.gov and Treasury guidance. Monitor both sources actively; this area is subject to ongoing regulatory development.

Section 7: Prior-Law Credits and Transition Planning

Before applying any OBBBA analysis to a client's project, practitioners must first determine which credit framework governs the project. The OBBBA phase-out affects only Section 45Y and 48E; it does not reach back and impose new limitations on projects that already qualified under the prior Section 45 renewable electricity production tax credit or Section 48 investment tax credit. Getting the framework wrong leads to the wrong analysis.

Prior-Law Framework: Section 45 and Section 48

Section 45 (the renewable electricity production tax credit) applied to qualifying facilities placed in service before the Section 45Y effective date, with applicable begin-construction transition rules. Section 48 (the investment tax credit) applied to qualifying energy property placed in service before the Section 48E effective date, with applicable transition rules. Both credits were technology-specific (not technology-neutral) and have separate eligibility, credit rate, and recapture rules from Section 45Y and 48E.

Projects that qualified under Section 45 or Section 48 (or that are subject to transition rules preserving those credits) are not subject to the OBBBA phase-out of Section 45Y and 48E. The OBBBA phase-out applies exclusively to the new Section 45Y and 48E framework. Confirm which credit applies to a specific project by reviewing the project's placed-in-service date, construction-start date, and technology type against the applicable IRS guidance at IRS.gov.

Energy Community Bonus and Domestic Content Bonus: Both Survive OBBBA

Section 45Y and Section 48E include bonus credit amounts for qualifying projects:

• Energy community bonus: An additional credit amount is available for projects located in "energy communities" as defined in IRC 45Y(g)(7). Energy communities generally include coal-producing regions, communities with closed coal mines or coal power plants, and certain census tracts with high fossil fuel employment. OBBBA did not repeal the energy community bonus. Hedge all energy community definitions and applicable credit amounts to IRS.gov and the applicable IRS notices.
• Domestic content bonus: An additional credit amount is available for projects that satisfy domestic content requirements for steel, iron, and manufactured products used in the facility. OBBBA did not repeal the domestic content bonus. Hedge all domestic content requirements, eligible product categories, and applicable credit amounts to IRS.gov and the applicable IRS notices, including the applicable safe harbor guidance.

Do not state specific bonus credit percentage amounts in client materials; confirm current bonus amounts at IRS.gov and in the applicable IRS notices, as these figures are subject to update.

Other Credits Modified by OBBBA: Section 45V, 45X, and 48C

OBBBA also modified certain other energy-related credits beyond Section 45Y and 48E. A full treatment of each is beyond the scope of this guide; practitioners advising on these credits should review the enacted OBBBA and current IRS.gov guidance directly. The following are noted for awareness:

• Section 45V (Clean hydrogen production tax credit): OBBBA modified certain aspects of the Section 45V credit. Hedge all specifics to the enacted OBBBA and IRS.gov; confirm current eligibility requirements and the status of Section 45V regulations at IRS.gov.
• Section 45X (Advanced manufacturing production credit): OBBBA modified certain aspects of the Section 45X credit for advanced manufacturing production. Hedge all specifics to the enacted OBBBA and IRS.gov.
• Section 48C (Qualifying advanced energy project credit): Confirm current status of the Section 48C credit program and any OBBBA modifications at IRS.gov and in applicable DOE and IRS guidance.

Frequently Asked Questions

Common questions from enrolled agents, CPAs, and tax attorneys advising clients on clean energy credits after OBBBA.

Related Practitioner Guides

The following guides cover OBBBA provisions and related tax issues that intersect with clean energy credit planning.

• OBBBA Vehicle Loan Interest Deduction Practitioner Guide -- Above-the-line deduction for new U.S.-assembled vehicle loan interest under OBBBA; MAGI phaseout, Schedule 1-A, and open proposed-reg questions.
• IRC 163(j) Business Interest Limitation OBBBA Practitioner Guide -- covers OBBBA's ATI restoration and business interest deduction changes; cross-reference for project finance clients where clean energy credit eligibility and 163(j) both affect capital expenditure economics.
• Foreign Tax Credit Form 1116 and Form 1118 OBBBA Practitioner Guide -- covers FTC basket allocation and limitation analysis for corporate transferees of clean energy credits with foreign income, including the interaction of transferred credits with the IRC 904 FTC limitation calculation.
• State OBBBA Conformity Practitioner Guide -- covers state-level conformity (and non-conformity) to the IRA clean energy credit framework and OBBBA modifications, including state tax treatment of transferability proceeds and direct pay receipts, which varies significantly by state.

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