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1200 MW Nuclear operating in Benton, WA
1,200 MW
Nameplate Capacity
1
Generators
unit
Nuclear
Technology
1984
Operating Since
Coordinates
46.4711, -119.3339
County
Benton, WA
Nearby Plants
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| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Energy Northwest- Columbia | Energy Northwest | Energy Northwest |
| Owner(s) | Energy Northwest | Energy Northwest | — |
| Status | Operating | operating | — |
GEM identifies the owner as Energy Northwest
This entity is not yet in the GEM ownership database — chain unavailable.
Columbia Generating Station is a nuclear commercial energy facility located on the Hanford Site, 10 miles (16 km) north of Richland, Washington. It is owned and operated by Energy Northwest, a Washington state, not-for-profit joint operating agency. Licensed by the Nuclear Regulatory Commission in 1983, Columbia first produced electricity in May 1984, and entered commercial operation in December 1984.
Read more on WikipediaColumbia Generating Station is a 1200 MW nuclear power plant located in Benton County, Washington. It began operating in 1984 and is owned and operated by Energy Northwest. The plant is the only nuclear power plant in the state of Washington, ranking it 1 of 1, and nationally it ranks 40 of 55 among nuclear plants. It has a single nuclear generator.
The plant's latest annual generation was 7,751,431 MWh, achieving a capacity factor of 73.7%. Columbia Generating Station operates within the Bonneville Power Administration balancing authority and the Western Electricity Coordinating Council (WECC) NERC region.
Generated from EIA, GEM, and public data sources
Grid Region
Pacific Northwest
Market
WEIM Participant
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
Bonneville Power Administration (BPAT)
Grid Voltage
500.0 kV
Regulatory Status
RE — Regulated
Entity Type
—
Sector
Electric Utility
Monthly net generation as reported to EIA-923 — useful for historical context. Confidence varies sharply by fuel type; the band above and the “About this data” button explain the caveats specific to this plant and how InfraSure’s in-house model handles them.
842.8K MWh
Latest Month
7.8M MWh
Annual Generation
73.7%
Capacity Factor
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No financial data available for this plant.
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This plant's balancing authority participates in CAISO's Western Energy Imbalance Market (WEIM). Direct nodal pricing data is not yet available.
No wholesale contracts disclosed in FERC EQR for this plant.
FERC EQR captures bilateral wholesale energy + capacity contracts ≥$1M/yr filed quarterly by jurisdictional sellers — covers renewable PPAs, thermal energy sales agreements, capacity contracts, and tolling agreements alike. Many plants don't appear: regulated-utility output flows to ratepayers via cost-of-service rather than bilateral contracts; small projects fall below the filing threshold; tax-equity-financed renewables route offtake to investors not utilities; merchant plants sell into ISO clearing markets without bilateral contracts. News-extracted buyer facts (below) may surface contracts disclosed only through announcements.
Last updated 2026-03-26
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$700M extended power uprate (EPU) project announced to increase electrical output by approximately 162 MWe, with BPA involvement
sourceFramatome awarded contract to deliver critical digital control system upgrades at Columbia Generating Station
sourceUnplanned manual shutdown due to pump circulation issues; plant returned to service and reconnected to regional grid February 17, 2026
source