TerraPower
TerraPower is a USA company active in the nuclear fuel chain as vendor.
Developer of Natrium, a sodium-cooled fast reactor paired with molten salt heat storage so the plant can follow load without changing reactor power. Founded with backing from Bill Gates. Its first unit at Kemmerer, Wyoming, began non-nuclear construction in 2024. Natrium requires HALEU, and the loss of Russian supply after 2022 delayed the project.
| Headquarters | Bellevue, Washington, USA |
|---|---|
| Founded | 2006 |
| Ownership | private |
| Roles in the chain | vendor |
TerraPower in context
It is behind 1 design in the SMR and advanced-reactor tracker: Natrium.
Designs in the SMR and advanced-reactor tracker
| Design | MWe | Regulator | Position |
|---|---|---|---|
| Natrium | 345 | US NRC | Construction permit issued March 2026 |
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
- TerraPower, 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