Terrestrial Energy Inc. develops and commercializes Generation IV advanced nuclear reactor technology, specifically its proprietary Integral Molten Salt Reactor (IMSR), designed to deliver emission-free, reliable, and cost-competitive energy for commercial power generation. The company's core business involves engineering and developing the IMSR plant and associated fuel salt production technology, supported by government partnerships and grants that fund its research and development efforts. The company generates revenue from R&D contracts and government support while advancing toward commercial deployment of its advanced reactor technology.