Companies / org-terrapower
TerraPower
Privately held developer of the Natrium sodium fast reactor with molten-salt energy storage. First commercial unit under construction pathway at Kemmerer, Wyoming.
- Roles
- Reactor developer, Vendor
- Organization type
- vendor
- Country
- United States
- Aliases
- Natrium
- Listing status
- Privately held
- Exchange / ticker
- —
- Ownership / control
- private
June 2025 company statement after $650M fundraise: will continue to be privately held. Rechecked 2026-10-01; no IPO identified in this pass. - Website
- https://www.terrapower.com/
- Confidence
- high
- Last verified
- 2026-10-01
Linked designs
- Natrium — Sodium-cooled fast reactor (SFR) · SMR
Tracked deployment projects
- Natrium Kemmerer Unit 1 — Construction · United States
Ownership & relationships
- No dated parent/JV relationships recorded beyond ownership notes.
Milestones
- 2025-06-18 — Closed $650M fundraise; reiterated privately held status.
Unresolved information
- Exact Natrium CP ML citation still pending higher-confidence ADAMS link.
Sources
- TerraPower announces $650 million fundraise (company_primary, accessed 2026-10-01)
- NRC TerraPower Natrium / Kemmerer (regulator_primary, accessed 2026-10-01)
- IAEA Advanced Reactors Information System (ARIS) (iaea_or_nea, accessed 2026-10-01)