THE COMPANY AND DESCRIPTION OF BUSINESS	9 Months Ended
THE COMPANY AND DESCRIPTION OF BUSINESS	Sep. 30, 2025
Accounting Policies [Abstract]
The Company and Description of Business	THE COMPANY AND DESCRIPTION OF BUSINESS Energy Fuels Inc. was incorporated under the laws of the Province of Alberta and was continued under the Business Corporations Act (Ontario). Energy Fuels Inc. and its subsidiary companies (collectively the “Company” or “Energy Fuels”) are together engaged in conventional and in situ recovery (“ISR”) uranium extraction, recovery and sales of uranium from mineral properties and the recycling of uranium-bearing materials generated by third parties, along with the exploration, permitting and evaluation of uranium properties in the U.S. As a part of these activities, the Company also acquires, explores, evaluates and, if warranted, permits uranium properties. The Company’s final uranium product, uranium oxide concentrate (“U3O8” or “uranium concentrate”), known as “yellowcake,” is sold to customers for further processing into fuel for nuclear reactors. The Company also produces vanadium pentoxide (“V2O5”) as a co-product of uranium at the White Mesa Mill (the “White Mesa Mill” or the “Mill”) from certain of its Colorado Plateau properties and, at times, from solutions in its Mill tailings impoundment system, each as market conditions warrant. The Mill commenced producing mixed rare earth element (“REE”) carbonate (“RE Carbonate”) from various uranium- and REE-bearing materials acquired from third parties at commercial scale at the Mill in 2022 and commenced producing separated neodymium/praseodymium (“NdPr”) at commercial scale at the Mill in 2024. The Company produced on-spec dysprosium (“Dy”) oxide at the Mill at pilot scale in July 2025 and expects to produce terbium (“Tb”) oxide at pilot scale at the Mill in Q4 2025 and samarium (“Sm”) oxide at pilot scale at the Mill in Q1 2026, with commercial scale production of Dy and Tb at the Mill expected in Q4 2026. NdPr, Dy, Tb and Sm are all REEs and classified as critical minerals in the U.S. The Company owns the Bahia heavy mineral sands (“HMS”) project in Brazil (the “Bahia Project”), which is an exploration/permitting stage property for the potential production of heavy mineral concentrate (“HMC”) that would be sold into the commercial HMC market while the associated monazite is expected to be used as a feedstock ore for production of REEs and uranium at the Mill. On June 3, 2024, the Company executed binding agreements (collectively, the “JV Agreements”) with Astron Corporation Limited (“Astron”) for the creation of a joint venture (the “Donald Project JV”) to jointly develop and operate the Donald REE and HMS Project in Australia (the “Donald Project”), which is a development stage property also for the potential production of HMC that would be sold into the commercial HMC market while the associated monazite is expected to be used as a feedstock ore for productions of REEs and uranium at the Mill. See Note 3 – Transactions. On October 2, 2024, the Company acquired Base Resources Limited (“Base Resources”), thereby increasing its portfolio of other HMS/monazite/REE projects around the world, including the Toliara HMS and REE project in Madagascar (the “Toliara Project”), which is a permitting/development stage property for the potential production of HMS products that would be sold into the commercial HMS product market while the associated monazite would be used as a feedstock ore for production of REEs and uranium at the Mill (see Note 3 – Transactions). Additionally, the Company is evaluating the potential to recover radioisotopes from its existing uranium process streams at the Mill for use in targeted alpha therapy (“TAT”) cancer treatments (see Note 3 – Transactions). With its uranium and vanadium products, HMC, HMS products, including ilmenite, rutile, zircon, and monazite, REE production and potential radioisotope production, the Company is working to establish itself as a critical minerals hub based in the U.S. Uranium is used as fuel for nuclear power, a reliable baseload source of energy in the world; REEs are used to manufacture permanent magnets for electric vehicles (“EVs”), defense systems, wind turbines, robotics and other clean energy and modern technologies. Concurrently, the Company’s recycling program (which includes processing uranium from other uranium-bearing materials not derived from natural or native ores, referred to as “Alternate Feed Materials,” recycling tailings solutions and performing other activities for the recovery of uranium, vanadium and potentially other metals and radionuclides), contributes to reducing the levels of new production and natural disturbances needed to meet global energy demand by repurposing feed sources that would have otherwise been lost to direct disposal and extracting additional valuable minerals from them. The titanium and zirconium products derived from our HMS production are used for, in the case of titanium (which is produced from ilmenite and rutile), aircraft engines and frames, spacecraft components, medical devices, pigments and other industrial and consumer goods uses, and, in the case of zirconium, fuel rod cladding and reactor components for nuclear power plants, high-temperature parts in jet engines and spacecraft, metal alloys, ceramics, and abrasives and other uses in the medical field and chemical industry. Additionally, certain radioisotopes, which the Company is evaluating for recovery from its uranium processing streams, have the potential to provide the isotopes needed for emerging TAT cancer treatments. As of September 30, 2025, the Company is a “production stage issuer,” as defined by 7 CFR Subparts 220.1300 and 229.601(b)(96) (collectively, “S-K 1300”), because it is engaged in the material extraction of mineral reserves on at least one material property. Mining Activities The Company’s mining activities consist of its conventional uranium mining projects, an ISR uranium mining project (complete with an ISR recovery facility) on standby and HMS mining projects, and the utilization of the Mill to process recovered ore. The Pinyon Plain, Whirlwind, La Sal, Bullfrog, Arizona Strip and Roca Honda Projects are U.S.-based conventional uranium mining projects located on the Colorado Plateau and within trucking distance of the Mill, while the Sheep Mountain Project is a uranium project located in Wyoming, USA and the Bahia Project is an REE/HMS project located in Bahia, Brazil. The Company’s Nichols Ranch Project (inclusive of the Jane Dough and Hank Satellite deposits) is an ISR uranium project located in Wyoming, USA. As of September 30, 2025, the Company continued ore production at its Pinyon Plain, La Sal and Pandora Projects, as well as exploration drilling and analysis at its Pinyon Plain, Nichols Ranch and Bahia Projects. The other conventional uranium mining projects are on standby and are being evaluated for continued mining and other activities and/or are in the process of being permitted. The Mill continues to receive third-party uranium-bearing mineralized materials from mining and other industry activities for processing and recycling, while also expanding its REE initiatives and pursuing its TAT initiatives. On October 2, 2024, the Company acquired the Toliara Project in Madagascar and the Kwale HMS Project in Kenya (the “Kwale Project”) as part of its acquisition of Base Resources. See Note 3 – Transactions for more information. On June 3, 2024, the Company created the Donald Project JV with Astron to jointly develop the Donald Project. See Note 3 – Transactions for more information.