Columbia nuclear power plant 1
Gross capacity
1,190MW
Columbia nuclear power plant 1 is a boiling water reactor unit at Columbia nuclear power plant in United States rated at 1,190 MW gross. It is operating. Commercial operation began 13 Dec 1984.
Specification
| Reactor type | Boiling water reactor (BWR) |
|---|---|
| Model | BWR-5BWR-5 (Mark 2) in the source |
| Size | Largeabove 300 MWe |
| Coolant | Light water |
| Moderator | Light water |
| Gross capacity | 1,190MW |
| Net capacity (reference) | 1,131MW |
| Net capacity (design) | 1,100MW |
| Thermal output | 3,486MWt |
| NSSS vendor | GE Vernova Hitachi Nuclear Energyall vendors |
| Typical enrichment | 3–5% U-235 |
Ownership & location
| Site | Columbia nuclear power plant |
|---|---|
| Unit | 1 |
| Country | United States |
| Owner | Energy Northwest100% |
| Operator | Energy Northwest |
| Coordinates | 46.4711, -119.3339 |
Live status
NRC daily report, unit key "Columbia Generating Station"
Power level
…
loading
Last 90 days
Updated daily from the US reactor status feed. The NRC publishes a power
percentage only, with no reason for a reduction, so a unit at 0% may be refuelling, in a planned
outage or tripped. See outages.
Fuel chain for this unit
Fuel form
Uranium dioxide pellets in zirconium-alloy cladding
Enrichment
3–5% U-235
Who makes this assembly
- Framatome BWR fuel assemblies
- Global Nuclear Fuel BWR fuel assemblies
- Westinghouse Electric Company BWR fuel assemblies
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.
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utilities do not publish fuel contracts.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 Aug 1972Construction start
- 19 Jan 1984First criticality
- 27 May 1984Grid connection
- 13 Dec 1984Commercial operation
Other units at Columbia nuclear power plant
| Unit | Status | Gross MW |
|---|---|---|
| Columbia nuclear power plant EPU | Pre-construction | 162 |
Other BWR-5 (Mark 2) units
5 units worldwide share this model designation.
| Unit | Country | Status | Gross MW |
|---|---|---|---|
| LaSalle nuclear power plant 1 | United States | 1,207 | |
| LaSalle nuclear power plant 2 | United States | 1,207 | |
| Nine Mile Point nuclear power plant 2 | United States | 1,320 | |
| Columbia nuclear power plant EPU | United States | Pre-construction | 162 |
Sources
- Global Nuclear Power Tracker, Global Energy Monitor, August 2026 release , CC BY 4.0 · retrieved 2026-09-06 · this unit last researched by GEM on 2024-05-27
- GEM.wiki entry (further reading) , CC BY-SA 4.0, linked, not quoted
How these sources are used, including the corrections applied on top of them and what is deliberately left blank · download the underlying data