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Research and Development Expenses	12 Months Ended
	Dec. 31, 2024
Research and Development Expenses
Research and Development Expenses	Note 6. Research and Development Expenses INL Project In 2022, Lightbridge entered into agreements with BEA, to support the development of Lightbridge Fuel™. These framework agreements use an innovative structure that consists of an “umbrella” SPPA and an “umbrella” CRADA, with an initial duration of seven years. Throughout the duration of these umbrella agreements, all R&D work contracted with BEA is through the issuance of Project Task Statements (PTS). The initial phase of work under the two agreements is expected to culminate in future irradiation testing in the INL Advanced Test Reactor of fuel samples using enriched uranium supplied by the DOE. The initial phase of work aims to generate irradiation performance data for Lightbridge’s delta-phase uranium-zirconium alloy relating to various thermophysical properties. Data gathered during future post-irradiation examination work are expected to support fuel performance modeling and regulatory licensing efforts for the commercial deployment of Lightbridge Fuel™. For the year ended December 31, 2024 and 2023, the Company recorded $1.7 million and $0.8 million in R&D expenses associated with INL, respectively. Romania Feasibility Study On October 16, 2023, the Company engaged RATEN ICN in Romania to perform an engineering study to assess the compatibility and suitability of Lightbridge Fuel™ for use in Canada Deuterium Uranium (CANDU) reactors. The total price of approximately $0.2 million was payable in three installments, including an advance payment of $0.1 million and an interim milestone payment and final payment totaling approximately $0.1 million. For the year ended December 31, 2024 and 2023, the Company recorded $0.2 million and $27,000, respectively in R&D expenses associated with RATEN ICN feasibility study. The Company made its final payment in December 2024 and has no further obligations under the agreement. FEED Study with Centrus Energy for a Lightbridge Pilot Fuel Fabrication Facility On December 5, 2023, the Company entered into an agreement with Centrus Energy to conduct a front-end engineering and design (FEED) study to evaluate deployment of a Lightbridge Pilot Fuel Fabrication Facility (LPFFF) at the American Centrifuge Plant in Piketon, Ohio. For the year ended December 31, 2024 and 2023, the Company recorded $0.3 million and $23,400, respectively in R&D expenses associated with this FEED study and has no further payment obligations.

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- Definition

The entire disclosure for research, development, and computer software activities, including contracts and arrangements to be performed for others and with federal government. Includes costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility and in-process research and development acquired in a business combination consummated during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 985
-SubTopic 20
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/985-20/tableOfContent

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 730
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483041/730-20-50-1

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