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Terrestrial Energy Executes DOE Agreement for Project TETRA Under Advanced Reactor Pilot Program
OTA agreement provides for construction and operation of Project TETRA, Terrestrial Energy’s pilot reactor using Integral Molten Salt Reactor technology

About this update from Terrestrial Energy Inc.
[{"type":"text","content":"OTA agreement provides for construction and operation of Project TETRA, Terrestrial Energy’s pilot reactor using Integral Molten Salt Reactor technology Terrestrial Energy now positioned to move quickly from design to operation under DOE authorization, laying the groundwork for swift commercialization of IMSR plants CHARLOTTE, N.C., Jan. 06, 2026 (GLOBE NEWSWIRE) -- Terrestrial Energy Inc. (NASDAQ: IMSR) (“Terrestrial Energy” or “the Company”), a developer of small modular nuclear power plants using its Generation IV reactor technology, today announced that it has executed an Other Transaction Authority (OTA) agreement with the U.S. Department of Energy (DOE) for Project TETRA, a groundbreaking initiative to construct and operate a pilot reactor which will support Integral Molten Salt Reactor (IMSR) plant development. This announcement marks an important milestone in Terrestrial Energy’s engagement with the Advanced Reactor Pilot Program, established by Executive Order 14301, under which the Company is targeting IMSR plant deployment facilitated by the DOE’s accelerated authorization of pilot TETRA reactor operation. The execution of an OTA demonstrates the Company’s structured program, which will support IMSR plant commercialization and its leading market position in the advanced reactor sector. The agreement establishes a direct, streamlined collaboration with the DOE to review and authorize the design and safe operation of the TETRA reactor, a molten salt-fueled, graphite-moderated reactor that uses standard assay, low-enriched UF₄-based fuel (SALEU) containing less than five percent U-235. This agreement enables Terrestrial Energy to move quickly from design to operation under DOE authorization. Executed under DOE’s authority at 42 U.S.C. § 7256(g), the OTA enables the Company to operate outside traditional federal contracting constraints, providing a flexible and agile framework designed for swift advanced reactor innovation. “This OTA is a partnership with the U.S. Department of Energy to accelerate development, licensing, and operation of IMSR plants servicing critical energy needs,” said Simon Irish, CEO of Terrestrial Energy. “The agreement sits on our development center-path, allowing the Company to expedite key elements of its program to prepare licensing applications for commercial plant operation. The pilot TETRA re...