$51 Billion Sits Idle While U.S. Nuclear Waste Liability Climbs

The United States has collected roughly $51 billion from electricity ratepayers to solve its nuclear waste problem, and it has not built a single permanent repository. At a House Energy Subcommittee hearing today, 16 September 2026, every expert witness agreed on one point: the law itself is the obstacle.

The Nuclear Waste Policy Act locks the Department of Energy (DOE) into pursuing Yucca Mountain as the sole permanent disposal site. Yet Yucca has been politically dormant since 2010, and its organisational infrastructure has been largely dismantled. Meanwhile, more than 95,000 metric tons of spent nuclear fuel sits at 73 sites across more than 30 states, accumulating at a pace that compounds federal liability with every passing year.

For energy investors tracking nuclear expansion, this is not a background regulatory detail. It is a structural risk embedded in every new build, every decommissioning asset, and every interim storage decision in the sector. What follows maps the legal trap, the cost of staying in it, and the specific pathways Congress is now debating to escape it, giving you a framework for reading how this policy inflection point affects nuclear investment in the United States.

How federal law turned Yucca Mountain from a site into a straitjacket

Yucca Mountain’s dominance is not a decision anyone in Washington makes today. It is the residue of choices made decades ago that no one has been empowered to undo.

The Nuclear Waste Policy Act effectively designates Yucca Mountain, in Nevada, as the sole site for the nation’s first permanent geologic repository. That statutory designation ties the DOE’s disposal obligations, and the spending of the Nuclear Waste Fund, to that single location. A geologic repository is a facility that isolates radioactive waste deep underground for the long term.

The lock-in held even after the DOE moved to withdraw the Yucca licence application in 2010. Withdrawing the application did not change the statute. The site remained legally required and practically abandoned at the same time.

Federal nuclear energy oversight involves a layered architecture of DOE programme offices, NRC licensing divisions, and interagency coordination structures whose partial dismantlement after 2010 is precisely what makes regulatory rebuilding so time-consuming.

Three structural features have kept that monopoly in place:

• Statutory lock-in: federal law names Yucca Mountain as the first repository and binds fund spending to it.
• Dismantled regulatory capacity: the agencies that would license the site no longer have the teams to do so.
• Absence of sustained appropriations: Congress has not funded the work needed to advance the site.

What “legally required but practically dormant” actually means for agency capacity

The 2010 withdrawal did more than pause a process. According to the hearing testimony and supporting research, the DOE and the Nuclear Regulatory Commission (NRC) largely dismantled their Yucca-focused teams. Resuming licensing would not restart a paused clock. It would mean rebuilding agency capability close to from zero, while resolving outstanding land and water rights disputes tied to the site.

Inconsistent federal standards on long-term radiation protection have compounded that uncertainty beyond the staffing question, undermining the public trust any siting effort depends on.

At today’s hearing, DOE Assistant Secretary Theodore Garrish said he wants legislative flexibility to develop additional disposal methods beyond Yucca Mountain. All four expert witnesses agreed that Congress should authorise supplemental disposal pathways not limited to the site.

That agreement is the point for you to note. Even a DOE leadership that wants to move past Yucca cannot do so without Congress. The constraint is legal, not technical, which is why today’s hearing is a leverage point worth tracking rather than routine oversight theatre.

The scale of the backlog and the bill Washington is running up

Start with the physical inventory, because the financial liability is its direct consequence.

According to the DOE Office of Nuclear Energy’s 2025 Spent Nuclear Fuel and Reprocessing Waste Inventory Report, using data as of 31 December 2024, the United States holds 95,117 metric tons heavy metal (MTHM) of commercial spent nuclear fuel in storage. It sits at 73 operating and shutdown commercial plant sites, with 4,169 canisters and casks of light-water-reactor fuel in dry storage.

This is a dispersed national infrastructure problem, not a single-facility management issue. Fuel is stranded where it was generated, spread across more than 30 states.

Stranded fuel converts directly into federal damages. The DOE signed contracts to accept utilities’ waste and has breached them by failing to do so. According to Congressional Budget Office (CBO) testimony, the DOE has already paid $5.3 billion in damages to utilities for those breaches, with an estimated remaining liability of $23.7 billion.

The trajectory is worse than the figures paid so far. Projections from the American Action Forum suggest total federal liability could reach approximately $62 billion by 2030 as waste remains in place.

Projected liability The American Action Forum projects federal liability payments could reach about $62 billion by 2030 if spent fuel remains stranded.

The Nuclear Waste Fund itself held approximately $51.435 billion as of 30 September 2025, up from $49.503 billion the prior year. It is growing mainly on interest earnings, because fee collections remain suspended.

Read those two numbers together. A $51 billion fund sits idle while projected liability climbs toward $62 billion. The problem is not a funding shortfall. It is the legal inability to spend the money on anything other than a site Congress has effectively defunded.

For you as an energy investor, this reframes waste disposal from a distant regulatory concern into a near-term balance-sheet variable. Utilities carry waste and decommissioning obligations as discounted long-term liabilities, and unresolved disposal timelines feed directly into the discount rates and credit assessments applied to nuclear assets.

Waste disposal uncertainty sits inside a larger set of structural constraints that shape how capital flows into U.S. nuclear assets; the nuclear energy investment framework analysts are applying treats regulatory bottlenecks, liability exposure, and political risk as interconnected variables rather than isolated discounts.

What the 119th Congress is actually debating, and where the fault lines run

The disagreement in Congress is not simply pro-nuclear versus anti-nuclear. It is a substantive contest over which institutional design failure to fix first, and the bills reflect opposing theories of how to break the deadlock.

Some would widen disposal options. Others would tighten interim storage. They pull in different directions on purpose.

Today’s industry witnesses offered a coherent agenda rather than a wish list. Nuclear Energy Institute President and CEO Maria Korsnick called for durable state-federal partnerships, additional permanent disposal pathways, and a resumption of nuclear waste fee collections tied to demonstrated government performance.

The National Association of Regulatory Utility Commissioners (NARUC), represented by Commissioner Stacey Paradis, recommended advancing repository licensing to support consolidated interim storage siting, and transferring used fuel management to a newly structured organisation with better financing access.

The consensus across witnesses rested on three points:

• Multiple permanent repository pathways, not a single mandated site.
• Preservation of the Nuclear Waste Fund for its intended purpose.
• Durable state-federal partnership structures to make siting stick.

Why the opposition is not simply blocking progress

The skepticism from environmental groups and state attorneys general is structurally important, not fringe. Legislative success on consent-based siting depends on resolving exactly the objections these groups raise.

Consent-based siting carries genuine ambiguities. Who holds the authority to grant consent across local, tribal, and state jurisdictions? What standard of community understanding counts as meaningful consent? These are unresolved in the current proposals.

Environmental critics argue that moving waste twice raises transport risk, that proposed interim sites often target communities of colour, and that interim facilities risk becoming permanent storage by default. Even the Union of Concerned Scientists, historically open to relocating stranded fuel, has grown skeptical of consolidated interim storage while no permanent repository exists. That reflects concern about sequencing and moral hazard, not blanket opposition to nuclear power.

The takeaway for you is directional. With bills running opposite ways on interim storage, the resolution most likely to pass will need to bundle competing interests rather than advance one faction’s preference. That has material implications for decommissioning asset timelines and interim storage investment cases.

What Sweden and Finland resolved that the U.S. has not

The Scandinavian programmes are useful here as a diagnostic tool, not a feel-good comparison. They show precisely which gaps in the U.S. framework are institutional rather than scientific.

The KBS-3 method, pursued by Sweden and Finland for over 40 years, encapsulates spent fuel in copper canisters with steel inserts, packs them in bentonite clay, and buries them at roughly 500 metres depth in crystalline granite. The technical pathway for deep geological disposal is validated.

Proof of concept Finland’s Onkalo facility is widely recognised as the world’s first operational spent fuel repository.

That matters because it settles the science question. The remaining U.S. obstacles are political and legal, not technical.

Sweden’s success turned on process, not just engineering. The host municipality of Östhammar consented after decades of sustained community engagement running alongside the scientific programme. That is the exact feature missing from U.S. consent-based siting proposals, where authority and standards remain ambiguous.

Canada’s regulatory assessment process offers a live case study of consent-based repository siting in a federal system, with the South Bruce site in Ontario undergoing formal environmental review under a framework that explicitly required the host community to pass a formal willingness study before proceedings advanced.

Analysts prescribe a specific set of statutory changes to replicate those conditions: explicit authorisation for multiple repository pathways beyond Yucca Mountain, long-term policy and funding stability, independent and trusted regulatory oversight, and a legally grounded consent framework giving host communities real influence and benefit. Greg White of the Nuclear Waste Strategy Coalition frames reprocessing and disposal as complementary rather than competing, consistent with the European model.

The Onkalo comparison calibrates your expectations. The United States is not waiting on a breakthrough. It is waiting on a legal and political architecture that Scandinavia built deliberately over four decades. Any credible disposal path should therefore be modelled in decades, not years, which is what should shape how you treat decommissioning liabilities and new-build financing assumptions.

What a credible resolution requires, and what investors should watch for

Pull the through-line together. The deadlock is legal in origin, compounded by institutional dismantlement, and now carrying financial consequences large enough to draw bipartisan attention. The catch is that the legislative fix requires bundling interests that have not historically aligned.

Rep. Scott Peters (D-CA) noted that the administration cannot advance these goals unilaterally, confirming that congressional action is unavoidable. His district hosts the decommissioned San Onofre plant, which is exactly why the stranded-fuel problem is not abstract to him.

The legislative constraint Rep. Peters identified sits alongside a parallel track of executive action; the nuclear executive orders issued in 2025 sought to accelerate deployment and streamline permitting, but they leave the statutory Yucca Mountain lock-in intact, which is why DOE Assistant Secretary Garrish framed his ask as a need for legislative flexibility rather than administrative discretion.

Here are the legislative signals worth monitoring, ordered by proximity to resolution:

1. Statutory authorisation of multiple repository pathways, breaking the single-site lock.
2. A consent framework with enough legal clarity to survive challenge across local, tribal, and state jurisdictions.
3. Nuclear Waste Fund reform tied to performance, including the fee-collection resumption the industry has offered to accept.

That third point signals something useful. NEI’s willingness to link fee collections to demonstrated government performance shows the industry will accept accountability in exchange for a credible disposal pathway. Jared des Rosiers of the Decommissioning Plants Coalition framed the NLIC initiative as directly addressing the shortcomings of past used-fuel management, which is the detail decommissioning investors should note.

Why even a legislative win will not resolve disposal uncertainty quickly

Statutory change authorising new pathways would begin, not finish, a siting and licensing process that runs for many years even under optimistic assumptions, given the regulatory rebuilding required at the DOE and NRC.

For decommissioning asset investors specifically, the nearest-term development is the INSPECT Act (H.R.4809), which would require NRC resident inspectors at decommissioned plants until fuel moves to dry storage, regardless of how the broader repository debate resolves.

The practical read for you today: treat waste disposal uncertainty as a persistent structural discount on nuclear assets until at least one bill from this session clears committee with bipartisan co-sponsorship. That would be the first real sign the coalition-building problem is starting to break.

This article is for informational purposes only and should not be considered financial advice. Investors should conduct their own research and consult with financial professionals before making investment decisions.

Past performance does not guarantee future results. Financial projections are subject to market conditions and various risk factors. These statements are speculative and subject to change based on market and legislative developments.