This bill amends two provisions of the Internal Revenue Code to treat nuclear electricity facilities like qualifying energy storage technologies for specific investment-credit rules. It (1) allows owners of nuclear 'qualified facilities' (as cross-referenced to section 48E(b)(3)(A)) to make the election that removes the public utility property limitation under section 50(d)(2), and (2) removes the limitation in section 6418(g)(4) that restricts progress-expenditure treatment for eligible credits when those credits relate to nuclear qualified facilities.
The measure primarily affects the tax treatment and timing of investment tax credits for new nuclear projects. For project developers, financiers, and utilities, the change can alter when and how credits are claimed and monetized; for the Treasury, it changes revenue timing.
The amendments take effect for taxable years beginning after December 31, 2026.
At a Glance
What It Does
The bill inserts nuclear qualified facilities into the text of IRC section 50(d)(2), permitting an election to remove the public utility property limitation for those facilities, and exempts eligible credits tied to nuclear qualified facilities from the progress-expenditures limitation in section 6418(g)(4).
Who It Affects
Owners and developers of nuclear electricity facilities defined as 'qualified facilities' in section 48E(b)(3)(A), utilities that own or contract with such facilities, tax equity investors and lenders that structure financing around investment tax credits, and the IRS (administration and audit functions).
Why It Matters
The changes align nuclear facilities with technologies already getting flexible ITC treatment, which can improve credit monetization and timing for long‑lead projects. That shifts project finance dynamics for nuclear deployments and raises implementation and revenue-recognition questions for tax administrators.
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What This Bill Actually Does
The bill makes two targeted edits to the Internal Revenue Code. First, it amends section 50(d)(2) so that an owner of a nuclear 'qualified facility' may elect to remove the public utility property limitation for investment tax credit purposes in the same way some energy storage technologies currently may.
Practically, that election affects how a facility is treated for the calculation and claiming of the investment tax credit when the property would otherwise be classified as 'public utility property' under existing rules.
Second, the bill modifies section 6418(g)(4) to say the statute’s restriction on treating progress expenditures in a certain way does not apply to eligible credits determined with respect to nuclear qualified facilities. In short, developers of qualifying nuclear projects can apply the progress-expenditure rules that permit credit treatment during construction stages, rather than being blocked by the existing limitation.Both changes reference the definition of 'qualified facility' in section 48E(b)(3)(A), so eligibility will hinge on that statutory definition rather than a free-form regulatory standard.
The amendments are narrowly targeted — they do not rewrite the underlying credit amounts, nor do they alter other eligibility criteria in section 48E — but they change important procedural and timing rules that influence how credits are claimed, financed, and monetized. The effective date applies to taxable years beginning after December 31, 2026, so projects and finance structures will need to account for that start point when planning eligibility and claiming strategies.
The Five Things You Need to Know
The bill amends IRC section 50(d)(2) to allow owners of qualified nuclear electricity facilities (per section 48E(b)(3)(A)) to elect removal of the public utility property limitation for investment tax credit purposes.
It inserts conforming language into section 50(d)(2)(B) to ensure references to energy storage technologies also apply to qualified nuclear facilities.
Section 6418(g)(4) is modified so its progress-expenditure restriction does not apply to eligible credits determined with respect to qualified nuclear electricity facilities, enabling credit recognition tied to construction spending.
Both changes explicitly rely on the statutory definition of 'qualified facility' in section 48E(b)(3)(A), so eligibility depends on that cross-reference rather than on a new nuclear-specific definition in this bill.
The amendments apply to taxable years beginning after December 31, 2026, giving project sponsors and financiers a clear date for when the modified treatment may begin to affect tax planning and closing conditions.
Section-by-Section Breakdown
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Add nuclear qualified facilities to the 50(d)(2) election
This provision edits the prefatory text of IRC section 50(d)(2) to insert 'to any qualified facility (as defined in section 48E(b)(3)(A)) which uses nuclear energy to produce electricity or' before the existing reference to energy storage technology. Mechanically, it grants nuclear facility owners the same elective ability to opt out of the 'public utility property' treatment that energy storage technologies currently enjoy, which changes how the investment credit applies to facilities owned or operated by public utilities.
Conforming edits to subsection (B) of 50(d)(2)
This is a narrow, textual conformity amendment: each place section 50(d)(2)(B) refers to 'energy storage technology' it will now refer to 'qualified facility or energy storage technology.' The practical effect is to avoid internal inconsistency within section 50(d)(2) so the new nuclear election reads and functions alongside the existing energy-storage election.
Exempt nuclear qualified facilities from the 6418(g)(4) progress-expenditure cap
The bill appends an exception to IRC section 6418(g)(4) stating that the cited sentence—previously limiting the application of progress-expenditure treatment—does not apply to any eligible credit to the extent it is determined with respect to a qualified nuclear electricity facility (again referencing section 48E(b)(3)(A)). For project finance, this can permit credit recognition tied to construction-stage expenditures, which affects cash-flow timing, tax equity sizing, and whether developers can monetize credits before commercial operation.
Effective date
All amendments apply to taxable years beginning after December 31, 2026. That date is the cutoff for when taxpayers and financiers should expect to rely on the new election and the progress-expenditure exception in planning, closing, and claiming credits; it does not grandfather in earlier taxable years.
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Explore Energy in Codify Search →Who Benefits and Who Bears the Cost
Every bill creates winners and losers. Here's who stands to gain and who bears the cost.
Who Benefits
- Developers and owners of qualifying nuclear electricity facilities — They gain a new elective route to avoid public utility property limitations and can apply progress-expenditure treatment, improving the timing and potential size of investment tax credit monetization during construction.
- Tax equity investors and lenders — Improved eligibility for progress-expenditure treatment makes nuclear projects more attractive for tax-credit financing structures, potentially broadening sources of capital and altering deal economics.
- Utilities that plan or own new nuclear plants — The changes reduce a tax-treatment obstacle tied to public utility ownership, simplifying options for on-balance-sheet utility deployments versus third‑party ownership.
- Supply-chain manufacturers and construction contractors for nuclear projects — By improving project finance prospects, the bill can accelerate procurement and construction activity that depends on tax-credit-backed financing.
Who Bears the Cost
- U.S. Treasury (federal revenue) — Relaxing restrictions and accelerating credit recognition likely shifts and may reduce federal revenue relative to the prior-law timing baseline.
- IRS and tax administrators — The agency must issue guidance, oversee eligibility determinations tied to section 48E definitions, and audit progress-expenditure claims for complex, long‑duration nuclear projects, increasing administrative burden.
- Competitor technologies and credit claimants — Allocations of tax equity and investor interest could shift toward nuclear projects, potentially crowding out investments that would otherwise flow to other eligible technologies.
- Project sponsors who lack clear 48E qualifying status — Sponsors close to the boundary of the 'qualified facility' definition may face compliance costs and legal uncertainty while seeking determinations or structuring to meet the cross-referenced definition.
Key Issues
The Core Tension
The central dilemma is whether to accelerate and simplify tax incentives for nuclear — supporting high‑capital, long‑lived clean generation — at the cost of near‑term federal revenue and increased administrative complexity, versus keeping stricter timing and limitation rules that protect federal receipts and reduce audit burdens but may hamper the financeability of new nuclear projects.
The bill is narrowly drafted but raises implementation and policy questions. Because it references the definition in section 48E(b)(3)(A) rather than creating its own definition, disputes about whether a facility qualifies will depend on how that cross-referenced text reads and how the IRS interprets it.
For long‑lead nuclear projects, the progress-expenditure exception can materially accelerate credit realization, but it also complicates audit trails: verifying construction‑phase expenditures for reactors is more complex than for modular projects, raising risk of post‑award adjustments or disputes.
Policy trade-offs are also real. Allowing earlier or expanded credit access for nuclear tightens competition for finite tax equity capital and shifts near‑term federal revenue recognition.
It could incentivize new builds but might also subsidize projects that would proceed under other economic supports (power purchase agreements, loan guarantees). Finally, administratively, the IRS will need clear guidance on recordkeeping, eligible expenditures, and interaction with other credits and state incentives to avoid inconsistent treatment and litigation risk.
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