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Columbia nuclear power plant EPU

Pre-construction United States
Gross capacity
162MW

Columbia nuclear power plant EPU is a boiling water reactor unit at Columbia nuclear power plant in United States rated at 162 MW gross. It is pre-construction. Commercial operation began 1 Jan 2031.

Specification
Reactor type Boiling water reactor (BWR)
ModelBWR-5 (Mark 2)
Size classLarge
CoolantLight water
ModeratorLight water
Gross capacity162MW
Net capacity (reference)not disclosed
Net capacity (design)not disclosed
Thermal outputnot disclosed
Typical enrichment3–5% U-235
Ownership & location
SiteColumbia nuclear power plant
UnitEPU
CountryUnited States
OwnerEnergy Northwest100%
OperatorEnergy Northwest
Coordinates 46.4711, -119.3339
Fuel chain for this unit
Fuel form
Uranium dioxide pellets in zirconium-alloy cladding
Enrichment
3–5% U-235
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Fabricator capability is recorded against reactor type and model line, not against named units — utilities do not publish fuel contracts.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. 1 Jan 2031Commercial operation

Other units at Columbia nuclear power plant

UnitStatusGross MW
Columbia nuclear power plant 1 Operating 1,190

Other BWR-5 (Mark 2) units

5 units worldwide share this model designation.

UnitCountryStatusGross MW
Columbia nuclear power plant 1 United States Operating 1,190
LaSalle nuclear power plant 1 United States Operating 1,207
LaSalle nuclear power plant 2 United States Operating 1,207
Nine Mile Point nuclear power plant 2 United States Operating 1,320

Sources