Oak Ridge National Laboratory (ORNL) and advanced nuclear reactor developer Kairos Power have signed a $27m (€22.8m) agreement to advance its reactor designs in the US state of Tennessee, a statement said.

The agreement will see the ORNL provide expertise and facilities to develop Kairos Power’s fluoride salt-cooled high-temperauture reactor design, which will use molten fluoride salt coolant with tristructural isotropic (Triso) fuel.