The nuclear waste fund holds $49.5 billion it isn't allowed to spend

In 1982, Congress told nuclear utilities to pay for their own cleanup: a fee on every kilowatt-hour, banked in a federal trust fund, to build a permanent repository for spent reactor fuel.▸ The repository never opened. The fee stopped in 2014. The fund kept collecting interest anyway, and now sits at $49.5 billion — money the law says can only be spent on the repository that doesn't exist. Meanwhile, because the Department of Energy broke its own contract to start taking the fuel by 1998, it has been paying a second, uncapped bill out of a different pot of money entirely.

Every fee dollar and every dollar of interest it earned went into the Nuclear Waste Fund, administered by DOE's Office of Nuclear Energy.▸ For three decades that meant real money moving: $21.8 billion in fee receipts from ratepayers, plus $35.4 billion in interest — interest alone now outweighs everything ratepayers ever paid in. Then, in National Association of Regulatory Utility Commissioners v. DOE, the D.C. Circuit ruled in November 2013 that DOE could not justify continuing to charge a fee for a repository program with no credible plan, and ordered the fee cut to zero. It has stayed at zero since May 2014. The fund kept growing on interest alone, but Congress still has to appropriate money out of it, year by year, for it to be spent — and Congress mostly hasn't.

Of $61.0 billion the fund has taken in since 1983, only $11.5 billion has ever gone out the door — and $7.5 billion of that paid for Yucca Mountain, the repository project Washington effectively shelved in 2010.▸ The other $49.5 billion just sits, drawing interest, while more than 90,000 metric tons of spent fuel — enough to fill a football field several stories deep — stays exactly where it was made, at dozens of reactor sites in three dozen states, growing by about 2,000 metric tons a year.

The fund's inertia doesn't mean the failure is free.▸ Because DOE signed a Standard Contract promising to start collecting utilities' spent fuel by January 31, 1998, and never has, courts have repeatedly found the government liable for breach of contract. Those damages — mostly the cost of utilities building and running their own on-site dry-storage facilities — are paid out of the Treasury's Judgment Fund, not the Nuclear Waste Fund. It is, in effect, a second bill for the same unfinished job, and it has no ceiling written into law.

DOE's own FY2024 audited financial statements put its remaining contingent liability at $37.6 billion to $44.5 billion — up from $34.1 billion to $41.0 billion just one year earlier, a roughly 10% jump in twelve months.▸ That is on top of the $11.1 billion already paid out. None of it comes from the $49.5 billion fund that ratepayers built specifically to solve this problem; that money is legally quarantined for a repository Congress has not authorized. The taxpayer, not the trust fund, is covering the gap.

Dollar figures are nominal, not inflation-adjusted, and span different fiscal-year cutoffs (the fund's cumulative figures run through FY2024; the liability estimate is DOE's own forward-looking projection disclosed in the same year's audit). DOE's cumulative totals are independently rounded and do not sum exactly, per the source document.