Terrestrial Energy
Updated: August 17, 2026
CEO - Simon Irish
Country: Canada | Funding: $156.6M (+)
Founded: 2013
Website: https://terrestrialenergy.com/
Terrestrial Energy creates SMR based on molten salt fission technology. In its reactor (iMSR) uranium fuel is mixed with various salts, such as lithium fluoride or sodium fluoride, that serve to suspend the nuclear fuel and act as the reactor’s main coolant. The reactor core includes not only the fuel and graphite modulators that regulate the speed of the fission reactions, but also the heat exchangers and pumps that keep the salt cool and flowing. The startup is targeting a range of markets, including electric power, data centers, and industrial applications that require heat.
Founded: 2013
Website: https://terrestrialenergy.com/
Terrestrial Energy creates SMR based on molten salt fission technology. In its reactor (iMSR) uranium fuel is mixed with various salts, such as lithium fluoride or sodium fluoride, that serve to suspend the nuclear fuel and act as the reactor’s main coolant. The reactor core includes not only the fuel and graphite modulators that regulate the speed of the fission reactions, but also the heat exchangers and pumps that keep the salt cool and flowing. The startup is targeting a range of markets, including electric power, data centers, and industrial applications that require heat.
