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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, 2015–2019
thousand pounds U3O8 equivalent
  Inventories at the end of the year
Type of uranium inventory owned by 2015 2016 2017 2018 P2019
Owners and operators of U.S. civilian nuclear power reactors inventories 121,131 127,964 123,850 111,174 112,801
Uranium concentrate (U3O8) 20,635 20,790 20,612 19,270 24,233
Natural UF6 48,136 53,602 50,615 43,312 40,375
Enriched UF6 41,557 43,743 43,451 40,107 35,715
Fabricated fuel (not inserted into a reactor) 10,803 9,829 9,173 8,485 12,478
U.S. supplier inventories 14,340 16,667 17,818 19,345 14,327
Uranium concentrate (U3O8) 6,289 7,185 7,174 7,754 6,857
Natural UF6 W W 4,364 W W
Enriched UF6 W W 6,280 W W
Fabricated fuel (not inserted into a reactor) 0 0 0 0 0
Total commercial inventories 135,471 144,631 141,668 130,519 127,128
P = Preliminary data. Final 2018 inventory data reported in the 2019 survey.
W = Data withheld to avoid disclosure of individual company data.
Note: Totals may not equal sum of components because of independent rounding.
Source: U.S. Energy Information Administration, Form EIA-858, Uranium Marketing Annual Survey (2015–2019)