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Uranium Marketing Annual Report

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Table 22. Inventories of natural and enriched uranium by material type as of end of year, 2021–2025
thousand pounds U3O8 equivalent
  Inventories at the end of the year
Type of uranium inventory owned by 2021 2022 2023 2024 P2025
Owners and operators of U.S. civilian nuclear power reactors inventories 108,503 102,409 114,287 115,132 118,256
Uranium concentrate (U3O8) 19,726 18,878 22,610 21,933 22,562
Natural UF6 36,400 31,075 31,078 33,325 36,082
Enriched UF6 43,195 46,059 55,591 52,940 51,818
Fabricated fuel (not inserted into a reactor) 9,182 6,397 5,009 6,934 7,793
U.S. supplier inventories 33,155 40,661 43,111 40,829 51,730
Uranium concentrate (U3O8) 28,465 33,743 37,019 28,829 36,776
Natural UF6 W W W W W
Enriched UF6 W W W W W
Fabricated fuel (not inserted into a reactor) 0 0 0 0 0
Total commercial inventories 141,658 143,070 157,398 155,961 169,986
Data source: U.S. Energy Information Administration, Form EIA-858, Uranium Marketing Annual Survey (2021–2025)
Note: Totals may not equal sum of components because of independent rounding. P = Preliminary data. Final 2024 inventory data reported in the 2025 survey. W = Data withheld to avoid disclosure of individual company data.