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Kemmerer nuclear power plant 1

Under construction United States
Gross capacity
345MW

Kemmerer nuclear power plant 1 is a fast reactor unit at Kemmerer nuclear power plant in United States rated at 345 MW gross. It is under construction. Commercial operation began 1 Jan 2031.

Specification
Reactor type Fast reactor (FBR)
Modelnot disclosed
Size classLarge
CoolantLiquid sodium or lead
ModeratorNone
Gross capacity345MW
Net capacity (reference)not disclosed
Net capacity (design)not disclosed
Thermal outputnot disclosed
Typical enrichment15–20% fissile, or plutonium
Ownership & location
SiteKemmerer nuclear power plant
Unit1
CountryUnited States
OwnerTerrapower LLC100%
OperatorTerrapower
Coordinates 41.7924, -110.5374approximate
Fuel chain for this unit
Fuel form
Mixed oxide or metallic fuel
Enrichment
15–20% fissile, or plutonium
Who makes this assembly
Upstream

Enriched fuel means this unit sits downstream of five conversion plants and four enrichment operators holding 88% of world capacity between the top three.

RosatomUrencoCNNCOrano
Conversion
CamecoCNNCConverDynOranoRosatom
Fabricator capability is recorded against reactor type and model line, not against named units — utilities do not publish fuel contracts. See the fuel chain.

Timeline

  1. 23 Apr 2026Construction start
  2. 1 Jan 2031Commercial operation

Other units at Kemmerer nuclear power plant

UnitStatusGross MW
Kemmerer nuclear power plant 1B Shelved 345
Kemmerer nuclear power plant 1C Shelved 345
Kemmerer nuclear power plant 1D Shelved 345
Kemmerer nuclear power plant 1E Shelved 345
Kemmerer nuclear power plant 1F Shelved 345

Sources