WASHINGTON, September 1 — The National Nuclear Security Administration has failed to report the true, long-term cost of America’s uranium enrichment programs to Congress, a lapse that has left lawmakers and the public without a clear accounting of a roughly $140 billion commitment through 2105. The Government Accountability Office flagged the breach in a report released August 20, finding that the NNSA never submitted the figure in its biennial Enriched Uranium Management Plan as required by law.
The $140 billion estimate covers three long-term enrichment efforts the agency is pursuing, yet Congress has been kept in the dark on the full price tag while the Department of Energy has already committed $900 million to expand low-enriched uranium capacity and $1.8 billion to build out high-assay low-enriched uranium (HALEU) capability. Strategically, the timing is awkward.
A ban on LEU imports from Russia has introduced significant uncertainty into future supply, and the United States does not currently possess a fully domestic enrichment capability. That gap matters because current law and policy bar the government from using imported uranium or uranium enriched through foreign technology for national security needs — including tritium production for nuclear weapons and fuel for naval reactors. The GAO noted that the NNSA maintains enough inventory of both LEU and highly enriched uranium to meet national security needs into the 2040s.
On the civilian side, supply and demand estimates for LEU are generally well established, but the Russian import ban complicates the calculus for HALEU, where demand estimates vary and the projected supply may not cover near-term needs.
Five Recommendations, No Action Yet
The GAO issued five recommendations to address the shortcomings. The NNSA Administrator must ensure future Enriched Uranium Management Plans include current long-term cost estimates for the Defense Fuels program, and must update the program’s management documentation to align with Program Execution Instruction requirements. The Secretary of Energy faces three directives: ensure economic analyses for DOE uranium efforts follow best practices and executive branch guidance, finalize a congressionally required report on HALEU availability, and align programmatic documents for LEU and HALEU support with agency guidance.
All five recommendations remain open. No action has been taken, and none is yet being planned.
What This Signals
The broader stakes extend beyond paperwork. The federal government is operating a patchwork of uranium enrichment spending with no clear strategic justification or documented return on investment, the GAO found. Enriched uranium serves dual purposes — national security missions on one hand, commercial nuclear power, medical isotope production and research reactors on the other — and the cost of maintaining fully domestic capability is both technically complex and expensive.
Until the NNSA and DOE implement the recommendations, Congress and the public will continue to lack a transparent accounting of the true price of sustaining America’s nuclear arsenal and civilian nuclear infrastructure. The next biennial Enriched Uranium Management Plan will show whether the agency finally complies.
