Terrestrial Energy is a U.S. nuclear technology company working on Generation IV nuclear technology. The nuclear plant is designed to produce cost-competitive, high-temperature thermal energy with zero emissions.
The company is developing a 2x195 MWe Integral Molten Salt Reactor (IMSR) plant design. The Canadian Nuclear Safety Commission completed its programmatic Pre-Licensing Vendor Design Review of the IMSR plant design successfully in 2023.
The IMSR uses molten salt reactor technology and is one example of a small modular reactor (SMR) characteristic of Generation IV nuclear reactor designs.
Terrestrial Energy announced plans to go public in March 2025 via special purpose acquisition company HCM II Acquisition Corp.
Terrestrial Energy and The Texas A&M University System announced plans in February 2025 to site an IMSR plant at the Texas A&M-RELLIS campus about 9 miles west of Texas A&M University in College Station.
The company announced an agreement with EnergySolutions in December 2024 to explore possible siting of IMSR plants at EnergySolutions-owned sites. In October 2024, Terrestrial Energy signed an agreement with Viaro Energy to develop an IMSR plant in the United Kingdom.