Terrestrial Energy Selected for DOE Office of Nuclear Energy Advanced Reactor Pilot Program for Accelerated Development
Terrestrial Energy has been selected for the U.S. Department of Energy's Advanced Reactor Pilot Program through its Project TETRA proposal. This initiative aims to accelerate the licensing and deployment of the company's proprietary Integral Molten Salt Reactor (IMSR) technology.
The program, established under Executive Order 14301, creates a fast-track pathway for licensing small and modular nuclear plants. Terrestrial Energy's IMSR plant features 822 MWth / 390 MWe capacity and uses Standard-Assay Low Enriched Uranium fuel. The company targets reactor criticality by July 4th, 2026, positioning itself at the forefront of America's nuclear advancement.
The IMSR technology is designed to provide clean, reliable energy for industrial heat, power users, data centers, and electric grid operators, with components sourced primarily from U.S. supply chains.
Terrestrial Energy è stata selezionata per il Programma Pilota per Reattori Avanzati del Dipartimento dell'Energia degli Stati Uniti tramite la proposta Project TETRA. Questa iniziativa mira ad accelerare l'iter di autorizzazione e la diffusione della tecnologia proprietaria Integral Molten Salt Reactor (IMSR).
Il programma, istituito dall'Ordine Esecutivo 14301, crea una procedura accelerata per la concessione di licenze a impianti nucleari di piccola taglia e modulari. L'impianto IMSR di Terrestrial Energy ha una capacità di 822 MWth / 390 MWe e utilizza combustibile uranio a basso arricchimento standard (Standard-Assay Low Enriched Uranium). L'azienda punta a raggiungere la criticità del reattore entro il 4 luglio 2026, collocandosi in prima linea nell'evoluzione nucleare americana.
La tecnologia IMSR è progettata per fornire energia pulita e affidabile per il calore industriale, gli utenti di potenza, i centri dati e gli operatori della rete elettrica, con componenti provenienti principalmente dalle filiere di approvvigionamento statunitensi.
Terrestrial Energy ha sido seleccionada para el Programa Piloto de Reactores Avanzados del Departamento de Energía de EE. UU. mediante su propuesta Project TETRA. Esta iniciativa pretende acelerar la autorización y el despliegue de la tecnología propietaria Integral Molten Salt Reactor (IMSR).
El programa, establecido por la Orden Ejecutiva 14301, crea una vía rápida para la concesión de licencias de centrales nucleares pequeñas y modulares. La planta IMSR de Terrestrial Energy ofrece una capacidad de 822 MWth / 390 MWe y utiliza combustible uranio poco enriquecido de ensayo estándar (Standard-Assay Low Enriched Uranium). La compañía aspira a alcanzar la criticidad del reactor para el 4 de julio de 2026, situándose a la vanguardia del avance nuclear en Estados Unidos.
La tecnología IMSR está diseñada para proporcionar energía limpia y fiable para calor industrial, consumidores de energía, centros de datos y operadores de redes eléctricas, con componentes procedentes principalmente de las cadenas de suministro de EE. UU.
Terrestrial Energy는 Project TETRA 제안을 통해 미국 에너지부의 고급 원자로 시범 프로그램에 선정되었습니다. 이 이니셔티브는 회사의 독자적인 Integral Molten Salt Reactor (IMSR) 기술의 허가 및 배치를 가속화하는 것을 목표로 합니다.
행정명령 14301에 따라 마련된 이 프로그램은 소형 및 모듈형 원전의 허가를 위한 신속 경로를 제공합니다. Terrestrial Energy의 IMSR 설비는 822 MWth / 390 MWe의 용량을 갖추고 있으며 표준 규격의 저농축 우라늄(Standard-Assay Low Enriched Uranium) 연료를 사용합니다. 회사는 2026년 7월 4일까지 반응도(임계 상태) 달성을 목표로 하여 미국 내 원자력 발전의 선두에 서려 합니다.
IMSR 기술은 산업용 열, 전력 사용자, 데이터 센터 및 전력망 운영자에게 청정하고 안정적인 에너지를 공급하도록 설계되었으며, 구성품은 주로 미국 공급망에서 조달됩니다.
Terrestrial Energy a été sélectionnée pour le Programme Pilote des Réacteurs Avancés du Département de l'Énergie des États-Unis via sa proposition Project TETRA. Cette initiative vise à accélérer l'autorisation et le déploiement de la technologie propriétaire Integral Molten Salt Reactor (IMSR).
Le programme, établi par l'Ordre Exécutif 14301, crée une voie accélérée pour l'homologation des centrales nucléaires de petite taille et modulaires. L'installation IMSR de Terrestrial Energy présente une capacité de 822 MWth / 390 MWe et utilise un combustible uranium faiblement enrichi de type standard (Standard-Assay Low Enriched Uranium). La société vise la criticité du réacteur pour le 4 juillet 2026, se plaçant ainsi à l'avant-garde des avancées nucléaires américaines.
La technologie IMSR est conçue pour fournir une énergie propre et fiable aux besoins de chaleur industrielle, aux consommateurs d'énergie, aux centres de données et aux gestionnaires de réseaux électriques, avec des composants principalement sourcés auprès des chaînes d'approvisionnement américaines.
Terrestrial Energy wurde über seinen Projektantrag Project TETRA für das Advanced Reactor Pilot Program des US-Energieministeriums ausgewählt. Diese Initiative zielt darauf ab, die Zulassung und den Einsatz der firmeneigenen Integral Molten Salt Reactor (IMSR)-Technologie zu beschleunigen.
Das Programm, eingerichtet durch die Executive Order 14301, schafft einen beschleunigten Pfad für die Zulassung kleiner und modularer Kernkraftwerke. Die IMSR-Anlage von Terrestrial Energy hat eine Leistung von 822 MWth / 390 MWe und verwendet Standard-Assay niedrig angereichertes Uran (Low Enriched Uranium) als Brennstoff. Das Unternehmen peilt die Kritizität des Reaktors bis zum 4. Juli 2026 an und positioniert sich damit an der Spitze des nuklearen Fortschritts in den USA.
Die IMSR-Technologie soll saubere, verlässliche Energie für industrielle Wärme, Energieverbraucher, Rechenzentren und Netzbetreiber liefern, wobei die Komponenten überwiegend aus US-amerikanischen Lieferketten stammen.
- None.
- Project completion and criticality achievement timeline may face regulatory hurdles
- Near-located site requirement could limit deployment options
Insights
Terrestrial Energy's selection for DOE's Advanced Reactor Pilot Program significantly accelerates their IMSR technology commercialization timeline with government backing.
Terrestrial Energy's selection for the DOE's Advanced Reactor Pilot Program represents a significant regulatory acceleration for their Integral Molten Salt Reactor (IMSR) technology. The program, established under Executive Order 14301, creates a streamlined pathway for advanced nuclear technologies to navigate the typically lengthy licensing process. This selection effectively provides Terrestrial with government-backed fast-tracking that could dramatically compress their time-to-market.
What separates Terrestrial's approach is their use of Standard-Assay Low Enriched Uranium (under 5% U235) rather than High-Assay Low-Enriched Uranium (HALEU). This strategic choice sidesteps the supply chain constraints currently hampering competitors who depend on HALEU fuel, which faces severe commercial-scale availability limitations in the US market. This fuel strategy represents a critical advantage in achieving their ambitious timeline for reactor criticality by July 4th, 2026.
The 822 MWth / 390 MWe capacity of their IMSR plants positions them well for versatile deployment scenarios - from industrial heat applications to data center power needs. The high-temperature capabilities enable both efficient electricity generation and direct thermal applications, creating multiple potential revenue streams. The program's emphasis on accelerating commercial deployment aligns perfectly with Terrestrial's fleet-scale deployment strategy, potentially allowing them to capitalize on first-mover advantages in the resurging nuclear market.
Advanced Reactor Pilot Program launched by DOE to expedite authorization and commercialization of advanced nuclear reactor designs
Terrestrial Energy’s selection set to accelerate Integral Molten Salt Reactor (IMSR) plant commercialization plans while advancing Administration plans to reform and streamline licensing and national laboratory processes for reactor testing
CHARLOTTE, N.C., Aug. 12, 2025 (GLOBE NEWSWIRE) -- Terrestrial Energy Inc., a developer of small modular nuclear power plants using Generation IV reactor technology, today announced that its Project TETRA proposal has been selected for the U.S. Department of Energy (DOE) Office of Nuclear Energy’s Advanced Reactor Pilot Program. DOE’s selection represents a significant milestone in Terrestrial Energy's commercialization pathway, leveraging the program's fast-track approach to advance the licensing and deployment of the company's proprietary Integral Molten Salt Reactor (IMSR) technology.
The Advanced Reactor Pilot Program, established as part of President Trump's Executive Order 14301 in May, creates a new DOE pathway to fast-track commercial licensing activities for small and modular nuclear plants that use advanced reactor technologies, expediting their broad deployment. Project TETRA includes the completion of key testing that is essential to support licensing applications for the construction and operation of commercial IMSR plants in the U.S. Relying on the company’s U.S. supply chain partners, the project aims to achieve reactor criticality by July 4th, 2026, positioning Terrestrial Energy's IMSR technology at the forefront of America's nuclear renaissance.
“President Trump’s Reactor Pilot Program is a call to action,” said Deputy Secretary of Energy James P. Danly. “These companies aim to all safely achieve criticality by Independence Day, and DOE will do everything we can to support their efforts.”
“We are pleased to have been selected by the DOE for this important project, which will help the U.S. win the race to energy dominance that is now so important for competitive commercial AI and the re-shoring of U.S. manufacturing,” said Simon Irish, CEO of Terrestrial Energy. “Our selection for the Nuclear Reactor Pilot Program fast-tracks key elements of IMSR design development and advances our program of fleet scale deployment of our IMSR Plant.”
Terrestrial Energy’s IMSR plant’s unique design characteristics make it ideally suited to meet the rapidly growing demand for clean, reliable, and flexible energy supply across multiple industrial sectors including, industrial heat and power users, and data center and electric grid operators. Its use of molten salt reactor technology and 822 MWth / 390 MWe capacity facilitates high-temperature thermal energy supply for high-efficiency steam turbine operation and low cost electricity, as well as direct supply to industrial heat processes, from near-located sites, reducing reliance on critical transmission infrastructure and supporting grid reliability.
The components and materials used in the IMSR plant are drawn heavily from the US supply chains, supporting US manufacturing across multiple states. IMSR plant use of low-cost, readily available Standard-Assay Low Enriched Uranium (LEU enriched to under
About Terrestrial Energy
Terrestrial Energy is a developer of Generation IV nuclear plants that use its proprietary Integral Molten Salt Reactor (IMSR). The IMSR captures the full transformative operating benefits of molten salt reactor technology in a plant design that represents true innovation in cost reduction, versatility and functionality of nuclear energy supply. IMSR plants are designed to be small and modular for distributed supply of zero-carbon, reliable, dispatchable, low-cost, high-temperature industrial heat and electricity, and for a dual-use energy role relevant to many industrial applications, such as chemical synthesis and data center operation. In so doing, they extend the application of nuclear energy far beyond electric power markets. Their deployment will support the rapid global decarbonization of the primary energy system across a broad spectrum and increase its sustainability. Terrestrial Energy uses an innovative plant design together with proven and demonstrated molten salt reactor technology and standard nuclear fuel for a nuclear plant with a unique set of operating characteristics and compelling commercial potential. Terrestrial Energy is engaged with regulators, suppliers and industrial partners to build, license and commission the first IMSR plants in the early 2030s.
On March 26, 2025, Terrestrial Energy and HCM II Acquisition Corp. (Nasdaq: HOND) announced that they have entered into a definitive Business Combination Agreement for a business combination (the “Business Combination”) that would result in the combined Company (Terrestrial Energy) to be listed on the Nasdaq Stock Market under the ticker symbol “IMSR”.
Important Information for Shareholders
This communication does not constitute an offer to sell or the solicitation of an offer to buy any securities or constitute a solicitation of any vote or approval.
In connection with the business combination, HCM II and Terrestrial Energy will file with the SEC registration statement on Form S-4 (the “Registration Statement”), which will include a preliminary prospectus of HCM II relating to the offer of securities to be issued in connection with the business combination, and a preliminary proxy statement of HCM II to be distributed to holders of HCM II’s capital shares in connection with HCM II’s solicitation of proxies for vote by HCM II’s shareholders with respect to the Business Combination and other matters described in the Registration Statement HCM II and Terrestrial Energy also plan to file other documents with the SEC regarding the business combination. After the Registration Statement has been declared effective by the SEC, a definitive proxy statement/prospectus will be mailed to the shareholders of HCM II and Terrestrial Energy. INVESTORS OF HCM II AND TERRESTRIAL ENERGY ARE URGED TO READ THE REGISTRATION STATEMENT, THE PROXY STATEMENT/PROSPECTUS CONTAINED THEREIN (INCLUDING ALL AMENDMENTS AND SUPPLEMENTS THERETO) AND ALL OTHER DOCUMENTS RELATING TO THE BUSINESS COMBINATION THAT WILL BE FILED WITH THE SEC CAREFULLY AND IN THEIR ENTIRETY WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT THE BUSINESS COMBINATION.
Investors will be able to obtain free copies of the proxy statement/prospectus and other documents containing important information about HCM II and Terrestrial Energy once such documents are filed with the SEC, through the website maintained by the SEC at http://www.sec.gov. In addition, the documents filed by HCM II may be obtained free of charge from HCM II’s website at https://hcmacquisition.com/ or by written request to HCM II at 100 First Stamford Place, Suite 330 Stamford, CT 06902.
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Terrestrial Energy Investor Center:
https://www.terrestrialenergy.com/investors
Terrestrial Energy Media & Investor Contact:
TerrestrialEnergy@icrinc.com
HCM II Investor Contact:
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FAQ
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