Kairos Power
Kairos Power is a USA company active in the nuclear fuel chain as vendor.
Developer of a fluoride-salt-cooled high-temperature reactor using TRISO pebbles. Its Hermes demonstration reactor at Oak Ridge received the first US construction permit for a non-light-water reactor in 2023.
| Headquarters | Alameda, California, USA |
|---|---|
| Founded | 2016 |
| Ownership | private |
| Roles in the chain | vendor |
Kairos Power in context
It is behind 2 designs in the SMR and advanced-reactor tracker: Hermes and Hermes 2.
Designs in the SMR and advanced-reactor tracker
| Design | MWe | Regulator | Position |
|---|---|---|---|
| Hermes | not stated | US NRC | Under construction |
| Hermes 2 | not stated | US NRC | Construction permit issued November 2024 |
How these are worked out: shares and ranks use the world totals cited in the table, and only named companies are ranked (unnamed or country-level entries in a source are not). A facility with no stated capacity is counted as a facility but adds nothing to a capacity figure. Vendor figures count operating units where this company is the recorded reactor vendor; ages count from the start-up year on record, and build times run from construction start to grid connection, as on the age and build-times pages.
Sources
- Kairos Power, company source
- Global Nuclear Power Tracker, Global Energy Monitor, August 2026 release , CC BY 4.0 · retrieved 2026-09-06
How these sources are used, including the corrections applied on top of them and what is deliberately left blank · download the underlying data