Kairos Power
Kairos Power develops fluoride salt-cooled high-temperature reactors (KP-FHR).
Kairos' Hermes demonstration (35 MWt) broke ground in 2024 at Oak Ridge, first U.S. non-LWR advanced reactor permit. Full-scale 140 MWe units target Google data centers via PPA. Uses TRISO fuel.
Why it matters now
Kairos' 2026 Hermes operation proves FHR tech, unlocking SMR PPAs for hyperscalers in 2025-2026.