Core Insights - Terrestrial Energy Inc. and NRG PALLAS have initiated the final phase of graphite irradiation and selection for the Integral Molten Salt Reactor (IMSR), which aims to provide high-temperature, clean energy with competitive economics and rapid time-to-market [1][4][5] - The IMSR utilizes approximately 125 tonnes of graphite as a neutron moderator, and the tests at NRG PALLAS' High Flux Reactor (HFR) will validate the performance of selected graphite grades over a seven-year operating cycle [2][3] Company Overview - Terrestrial Energy is focused on developing Generation IV nuclear plants, specifically the IMSR, which is designed for low-cost, reliable, and zero-carbon energy supply, extending nuclear energy applications beyond traditional electric power markets [5] - The company is engaged with regulators and partners to license and commission the first IMSR plants by the early 2030s, aiming to support global decarbonization efforts [5] Collaboration Details - NRG PALLAS has over 50 years of experience in nuclear technology research and is conducting comprehensive irradiation tests to support advanced reactor development and licensing [4][7] - The collaboration between Terrestrial Energy and NRG PALLAS has been ongoing for five years, with the current phase marking a significant milestone in the graphite selection process [5] Business Combination Announcement - On March 26, 2025, Terrestrial Energy and HCM II Acquisition Corp. announced a definitive Business Combination Agreement, which will lead to Terrestrial Energy being listed on the Nasdaq under the ticker symbol "IMSR" [6]